Question (final) Ii

REVISED OBJECTIVE QUESTIONS & ANSWERS 1.

End of steel bar sometimes painted in various colors & color combination as a mean of identifying different grade of steel.

7. In towing the a/c (light) mark the correct statement.

1. Solid colors identify the alloy & strips identify the carbon contents (*) 2. Strips identify the alloy & solid colors identify the carbon content. 3. Both 1 & 2 are correct 4. None of the above is correct

1. All tail wheel a/c towing towards backward 2. All nose wheel a/c towing towards backward 3. If steerable nose wheel a/c, locking scissors are set of full swivel position (*) 4. None of the above is correct

Which gage is used to measure the backlash between gears

8. While starting the piston engine, which type of fire extinguisher is permitted

2. 1. 2. 3. 4. 3.

Filler Gage (*) Screw Pitch Gage Fillet age DTI

1. Water & water based agent 2. CO2, 516 capacity (*) 3. Dry chemical 4. CC14 (Halon Gas)

Accuracy of finished screw thread is determined by

9. Which core material deflection in composite

1. Screw pitch gauge (*) 2. Ring thread gauge 3. Thread Gauge 4. Plug thread gauge 4.

1. 2. 3. 4.

Highest size of drill is 1. 2. 3. 4.

gives

Honey comb (*) Synthetic resin Foam All of the above is correct

10. Paralketone used on

No. 80 (0.0135) 3/16 (0.1875) 3.75 mm (0.1475) E (0.2500) (*)

1. 2. 3. 4.

5. Schematic diagrams are used mainly for 1. 2. 3. 4.

don't

Cable (*) Iron Conduit None

11. Interpretation analysis of defect in PFD indicates by

A/C maintenance & repair Trouble shooting Installation of parts All of the above are correct (*)

1. Extent of White staining 2. Red marks on white surface. * 3. Greenish yellow. 4. None of the above is correct.

6. Mark the correct statement 12. In pfd, when used fluorescent, material color of defective part & sound part is

1. Turboprop engine requires lengthy runway than piston engine of same power 2. Turbojet has more weight than piston engine of same power 3. Turbofan required sort runway as compare to turbojet (*) 4. All of the above are correct

1. 2. 3. 4.

115

Brilliant yellow – green & blue violet (*) Brilliant yellow – green & bright red Bright red & blue violet None of the above is correct

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 13. Ata – 100 code of hydraulic power, pneumatic, fire & engine oil is 1. 2. 3. 4.

20. If no marking of drill, identification of drill can be measured by drill gauge having

36, 26, 79, 83 29, 36, 26, 78 29, 36, 26, 79 (*) 79, 36, 29, 26

1. 2. 3. 4.

14. ATA –100 specification 37 indicates

1. Vacuum / pressure (*)

21. Diameter of rivet is

2. Water / waste 3. Pneumatic 4. None of the above is correct 15. Needle bearing movement is 1. 2. 3. 4.

is

used

Fraction on right & number on left Fraction on left & number on right (*) Both 1 & 2 are correct None of the above is correct

1. 2. 3. 4.

where

Oscillatory rather than rotary (*) Rotary rather than oscillatory Both 1 & 2 are correct None of the above is correct

2 times of thickness of sheets 3 times of thickness of thickest sheet (*) 3 times of thickness of joint sheets Equal to grip length

22. Extension tap is used for 1. 2. 3. 4.

16. Embitterment is steel is reduced by

Cut full threads in blind hole to bottom Cut the thread in deep hole (*) Thread cuts on long shaft All of the above

1. Heating the steel at 150° - 200° C (tempering) 2. Increasing the carbon percentage 3. By annealing (*) 4. None of the above is correct

23. Lift & drag depends upon

1. More cambered area of upper side & less of lower side of wing. 2. More cambered area of lower side and less on upper side.

17. Pressure of gas on acetylene welding is depend upon 1. 2. 3. 4.

3. As in 1 & Angle of attack 4. As in 3 & Speed of aircraft *

Area of welding surface Type of material being welded As the welder will want None of the above is correct (*)

24. Gear rack is used for

18. Mark the correct statement regarding Monel metal 1. 2. 3. 4.

It can not hardened by heat treatment (*) It can be hardened by heat treatment Either 1 & 2 are correct None of the above is correct

25. Indication of class – b fire is

19. Mark the incorrect statement

1. Ultrasonic inspection _______ Piezoelectric effect (Radiography)

2. MPI ________ skin effect (Ultrasonic) (*) 3. Eddy current _____ current acceptance 4. PFD _________ capillary action

CORRECT ANSWER IS MARKED * AT END

1. Change rotary motion to reciprocating motion (*) 2. Change reciprocating motion to rotary motion 3. Transmit motion to parallel with it 4. None of the above is correct

116

1. 2. 3. 4.

Red (*) Yellow Green Brown

REVISED OBJECTIVE QUESTIONS & ANSWERS

26. Color of extruded bar of aluminum alloy in 5 inches is

33. Cyaniding of low carbon is quenched in 1. 2. 3. 4.

1. Red marking near the end of each length 2. Blue marking near the end of each length 3. Stamp of blue & white color 4. None of the above is correct

34. How long piece of steel is left in a furnace for soaking

27. What size of the hole should be bored before cutting a 2.5" internal acme thread having 3 thread per inch 1. 2. 3. 4.

Oil Brine Water Both 1 & 2 (all) are correct (*)

1. For long enough to ensure a good even heat throughout (*) 2. For 2 hours for per cubic inch of piece 3. One hour for each square inch of cross section area 4. Both 1 & 3 are correct

2.5" 2.1667" (*) 3.5" 2.75"

35. Scale often forms on the surface of the metal & dirt blocked on it, cleaning of scale & dirt from heat threaded part is done by

28. Mark the correct statement 1. Light a/c is tied down after every flight 2. Light a/c is not require tied down 3. Only when strong air being to flow then tie down (*) 4. Both 1 & 3 are correct

1. 2. 3. 4.

Steel wire brush Sand blasting Scrap All of the above is correct (*)

29. Dis-integrator is used to 1. 2. 3. 4.

36. In Rockwell hardness testing.

Making hole in conductive metal Making hole in non-conductive job Making hole clearly & fairly Both 1 & 3 are correct (*)

1. Softer the piece of metal, the deeper will be the impression under given load 2. The hardness is indicated on a dial gage graduated in the B & C scale 3. For non-ferrous metal, the steel ball should be used & hardness no read on B scale 4. All the above are correct (*)

30. Transferred metal by chemical action over a surface for 1. 2. 3. 4.

Provide corrosion resistance surface Provide base for further plating Forward up All the above (*)

37. Flame heating is done for

31. For commercial annealing, cooling is done in

1. When hardness is required only for a limited depth of the material 2. For small part 3. Both 1 & 2 are correct (*) 4. None of the above is correct

1. Furnace (*) 2. Air 3. Mica 4. Both 1 & 2 are correct 32. The heat of the furnace controlled or regulated by 1. 2. 3. 4.

can

38. Fatigue crack is detected by

be

1. 2. 3. 4.

Be watching the color of the furnace Pyrometer Thermo meter All are correct (*)

115

Ultrasonic (*) Radiography Body current All are correct

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS

39. End of the steel bars are sometime painted in various 1. Color & color combination as a means of identifying the carbon constant 2. Strips identifying the alloy and solid color identifying the carbon 3. Alloy identified by color, content by stripes (*)

1. 2. 3. 4.

1. Flux is used (*) 2. Temperature is maintained 3. Clay is commonly used to surround the area to be jointed 4. All are collect

1. Known as force welding (bronze welding) 2. A welding in which base metal is not fuse 3. A combination of brazing & welding 4. All are correct (*) 42. Which statement is correct 1. Low temperature brazing is also known as hard soldering or silver soldering (*) 2. Silver welding has equal strength of material 3. After silver soldering, further heat treatment is required 4. Both 1 & 2 are correct 43. Unit of radio active material is

1. Curies & Rutherford scale.

1. Sharpness of image detail on a radiograph 2. Degree of blackening of a radio graph (*) 3. Relative brightness of two adjacent area 4. Both 1 & 3 are correct.

1. 2. 3. 4.

Stainless steel containing titanium Low temperature By reducing heating time All of the above is correct (*)

48. The term used on worm gear 1. 2. 3. 4.

Throat Throat radius Throat diameter All of the above is correct (*)

49. In flour sent method 1. If wet developer is applied, it must be dried (*) 2. If dry developer is applied, it must not be dried 3. Dry for long period 4. All are wrong 50. Telescoping gage

2. Roentgen.

1. Is used for inside measurement 2. Range from ½" to 6" 3. Range from ½" to 1" 4. Both 1 & 2 are correct (*)

3. Both 1 & 2 are correct. * 4. None of the above is correct in

51. Small hole gage is used for

1. Curies 2. Half life (*) 3. Both 1 & 2 are correct

1. 2. 3. 4.

4. None of the above is correct.

CORRECT ANSWER IS MARKED * AT END

X-ray (*) Light Infrared ray Thermal

47. Welding decay in stainless steel is reduced by

41. Braze welding is

measured

in

46. Density of radioactive mean is

40. To prevent solder from running away from the surface to be jointed.

44. Radioactive decay is tennis of

45. Which does not passage electromagnetic radiation

116

Measuring grooves & slots Measuring small hole Both 1 & 2 are correct (*) None of the above is correct

diameter

REVISED OBJECTIVE QUESTIONS & ANSWERS 4. All of the above is correct

52. The size of the flat cold chisel is determined by 1. 2. 3. 4.

59. Which statement is correct

Width of the cutting edge (*) Length of the cutting edge Length of chisel All of the above are correct

1. Force is exerted on charged particle 2. Force is applied on charged particle moving along the magnetic field (*)

53. Which statement is correct

60. When two sphere of same mass, one id +ve charged & other is – ve charged, then new mass will

1. Straight fluted reamer is less tendency the chatter 2. Spiral type are tapered for the short distance back of end to and in starting (*) 3. Bottoming reamer have tapers end & are used to short hole 4. Both 1 & 2 are correct

1. Change 2. Unchanged (*) 3. Depend on capacity 61. If the conductor is of 4 Ω & it stretched to twice of its length, then its resistance is

54. Thread may be produced by

1. 2. 3. 4.

1. On a lathe with specially shaped cutting tool 2. On spiral machine using rotary cutter 3. By rolling on spiral machine using dies 4. All of the above are correct (*)

1Ω 8 Ω (*) 12 Ω 16 Ω

62. A & B are big & small battery, having same emf. Internal resistance of battery A is

55. Needle file are

1. Knurled on both side 2. Knurled on one side only

1. 2. 3. 4.

3. Use on slat by diameter & watch maker 4. Both 1 & 3 are correct (*) 56. Hook spanner is used on

Less than B (*) Greater than B Equal to B Unaffected

63. Which statement is correct

1. Round nut having series of notches or slots cuts on its side (*) 2. Hexagonal nut with slots 3. ??? nut with slots 4. All of the above are correct

1. Battery terminal voltage is equal to battery emf 2. Battery terminal voltage is less than battery emf (*) 3. Battery terminal voltage is more than battery emf 4. Depends on direction of current flow

57. Meshing gear have same 1. Teeth (*) 2. Pitch number of some size 3. Dedendum 4. All of the above are correct

64. In a sport welding a typical defect is 1. 2. 3. 4.

58. Vernier scale is used on 1. Microscope (*) 2. Boroscope 3. Spheroscope

Porosity Crack Irregular shape Both 2 & 3 are correct (*)

65. In oxyacetylene welding while shutting off the flame 1. Oxygen is shut out first

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. Acetylene is shut off first (*) 3. Both are shut off simultaneously

3. Joins the two parts in the same plane by overlapping 4. Both 1 & 2 are correct

66. Oxyacetylene flame with equal volume of oxygen & acetylene gives the types of flame as shown 1. 2. 3. 4.

Carbonizing Oxidizing Neutral (*) There is no such flame

200 – 400 degree cent 300 – 600 degree cent (*) 1000 – 2000 degree cent 850 – 1200 degree cent

75. The brazing the flame to be used is 1. 2. 3. 4.

When heated becomes soft When heated becomes hard When cools become hard Both 1 & 3 are correct (*)

1. 2. 3. 4.

1. But welding. * 2. Spot welding 3. Lap welding

Measures resistance to penetration Measures diameter of indention Measures depth of penetration (*) Both 1 & 3 are correct

77. Galvanic corrosion occurs between

70. In dye penetrant test, the indication dotted lines shown, indicates 1. Porosity (*) 2. Tight crack. 3. Continuous flows. 4. All of the above.

1. Dissimilar metals joined without insulation between them (*) 2. Al-alloy structured assembled with steel screw 3. Both 1 & 3 are correct 78. Aviation snip is sued for cutting 1. Thick metal sheet 2. Thick stainless sheet 3. Heat treated al-alloy & stainless steel sheet (*) 4. All types of thick sheet

71. Corrosion on the surface of aluminum alloy is indication on the form of Metal bulging White powdery deposits (*) Gray power deposits. All of the above.

79. Headless grub screws are installed by

72. Fillet weld is a weld which 1. Joins the surfaces which are perpendicular to each other (*) 2. Joins the two parts in the same plane by clamping

CORRECT ANSWER IS MARKED * AT END

Neutral flame (*) Oxidizing flame Slightly carbonizing Any flame

76. Rockwell hardness tester

69. A crack may be repaired by

1. 2. 3. 4.

Low wave length & high penetration(*) High wave length & low penetration Invisible ray Both 1 & 3 are correct

1. Weld may be filled evenly & slowly 2. Filed with solder & brazing metal 3. None of the above is correct (*)

68. Synthetic thermoplastic 1. 2. 3. 4.

1. 2. 3. 4.

74. To obtain clean & good weld

67. The silver solder metal melts at 1. 2. 3. 4.

73. Radiography NDT test

116

1. 2. 3. 4.

Allen key (*) Special type of ratchet spanner Suitable screw driver Special tool

80. An altimeter has 1. Stack of three evacuated bellows 2. Stack of two evacuated bellows

REVISED OBJECTIVE QUESTIONS & ANSWERS 3. Barometric pressure setting provision 4. All of the above is correct (*)

3. Red 4. None of the above is correct

87. Select the characteristics of a good gas weld

81. In a micrometer in the main scale each cm divided into 10 equal parts & in circular scale, 9 division of main scale equals to 11 divisions of circular scale the least count of the micrometer is 1. 2. 3. 4.

1. The depth of penetration shall be sufficient to ensure fusion of filler rod 2. The height of weld healed should be 1/8" above base metal 3. The weld should taper off smoothly into base metal (*) 4. These should be no oxide on the weld.

1 mm 0.01 mm 0.01 cm (*) 0.0001 mm

82. In a micrometer the smallest division on main scale is 0.5 mm. The vernier scale is divided into 25 division & it moves one division on the main scale for complete rotation of the vernier scale then the least count of he micrometer is 1. 2. 3. 4.

1. 2. 3. 4.

0.01 mm 0.002 cm (*) 0.01 cm 0.001 mm

83. Altimeter in absence of may be checks 1. 2. 3. 4.

88. Which tool can be used to measure the alignment of a rotor shaft or the place of rotation of disk Dial indicator (DTI) (*) Shaft gage Protector All of the above is correct

89. The measurement reading on vernier scale manometer

1. 2. 3. 4.

Vacuum gauge Vacuum chamber (*) Micro manometer All of the above is correct

1.411" 1.436" 1.700" 1.456"

90. Side clearance measured by

84. In four digit Non Ferrous alloy index system 2024, the first digit indicates

1. 2. 3. 4.

1. The % of Aluminum-added 2. The different alloy in this group 3. Alloy group 4. Copper is the major alloying element (*)

of

piston

ring

is

Micrometer Thickness gauge (*) Depth gauge Dial gauge

91. What tool is generally used to set a divider to an exact dimension

85. Why it is considered good practice to normalize a part after welding

1. 2. 3. 4.

1. To relieve internal stresses developed within base metal (*) 2. To introduce a slight amount of carbon to improve the surface hardness of the weld 3. To remove the surface scales formed during welding 4. All of the above is correct

Mechanic scale (*) Surface gauge Dial indicator All are correct

92. Which statement is correct regarding tie-down of small a/c 1. Manila rope has a tendency to stretch when it gets wet 2. Nylon or Dacron rope is preferred to manila rope (*) 3. The a/c should be headed down wind in order to eliminate or minimize wing lift

86. The color of 100 LL fuel is 1. Blue (*) 2. Green

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 4. Leave the nose wheel or tail wheel unlocked

4. As in (3) & bottoming tap is used to cut thread at bottom.

93. Flow of aviation fuel which passes greater antiknock quality than 100 octane, classified

99. Which maintenance record entry best describe the action taken by FAR when a 0.125" dent in a straight section o9f ½" Al-alloy tubing is found

1. According to the multiplies of lead

2. By reference to normal Heptanes 3. By performance number (*) 4. None of the above is correct 94. A primary cause corrosion is 1. 2. 3. 4.

of

intergranular

Improper heat treatment (*) Dissimilar metal contact Improper application of heat None of the above is correct

100.EMF is produced in generator by

95. Corrosion caused by galvanic action is result of 1. 2. 3. 4.

Excessive anodization Contact of two unlike metals (*) Excessive etching All of the above is correct

A coating of hot linseed oil (*) Evacuation of tubing before sealing A coating of Zn – chromate primer None of the above is correct

1. Releasing compressive stress on metal

2. Creating compressive stress on metal. * deformation

101.AN coupling used in Aluminum tube ½ inch diameter is AN 818-5 AN 818-2 AN 818-8 (*) None of the above.

102.Roller bearing take more radial load than ball bearing of same size because 1. Larger contact area (*) 2. High rotation speed. 3. Low rotation speed.

1. 2. 3. 4.

5 times diameter of the ball. 10 times diameter of the ball. * 20 times diameter of the ball. 50 times diameter of the ball.

104.Which statement is correct 1. 2. 3. 4.

98. Which statement is correct regarding hand tap 1. Taper, plug, bottoming 2. As in (1) & bottoming tap is used to cut thread at bottom (*) 3. Plug, taper & bottoming. CORRECT ANSWER IS MARKED * AT END

Lenz's Law Electromagnetic Induction (*) Right Hand Fleming Rule None of the above is correct

103.In brinell hardness testing, the thickness of material should not be less than

97. One way to obtain increased resistance to stress corrosion is obtained by

3. Producing non-uniform while cold working 4. All are correct

1. 2. 3. 4.

1. 2. 3. 4.

96. The internal surface of sealed structural steel tubing is best protected against corrosion by 1. 2. 3. 4.

1. Dent is acceptable limit & repair not necessary 2. Dented section removed & replaced with identical new tubing flared 45. 3. Dent removed by drawing appropriate size bullet through the tubing (*) 4. Deferred to maintenance check.

116

Swg 0 is small Swg 14 is thicker than swg 18 (*) Swg 14 is smaller than swg 18 None of the above is correct

105.Bottle jack is used. 1. To raise one wheel to remove brake unit 2. To raise single wheel

REVISED OBJECTIVE QUESTIONS & ANSWERS 3. To raise single wheel to remove one brake unit 4. All are correct (*)

113.MODAM (Modulator – Demodulator) used is 1. 2. 3. 4.

A part of CPU A software Input / output peripheral (*) Operating system

106.Liquid penetrant test is carried out in 1. 2. 3. 4.

Porous plastic Nonferrous metal (*) Unpainted cleaned wood Any one or all of the above are correct

114. When jacking the aircraft

1. Aircraft nose put to the wind. 2. Select hard & smooth surface. 3. Both 1 & 2 are correct.(*)

107.Which statement is correct 1. Tank inserted into handle is knows as safe edge 2. When filling is done, use lubricant 3. Blade is made of steel & is not heat treated 4. None of the above is correct (*)

4. None of the above is correct 115.When defuelling is done on swept back wing a/c. best precaution is 1. 2. 3. 4.

108.Ohm's Law is

1. 2. 3. 4.

I∝V V ∝ I (*) I∝R V∝R

116.When a/c fuelling with fuelling, precaution taken

109.Flux used in soldering is

110.Edge distance is 2 times the shank diameter (*) 2 times the sheet thickness 2 times of head diameter None of the above is correct

117.Negative plate of Ni-cd battery is of 1. 2. 3. 4.

111. Which statement is correct regarding Air speed indicator (ASI).

1. Pitot pressure is given inside capsule. 2. Static pressure is given outside the

Pure cadmium (*) Nickel hydroxide Cadmium hydroxide None of the above is correct

118.Electrolyte used in lead acid battery

capsule. 3. Measure differential pressure. 4. All are the correct (*)

1. KOH 2. Dilute H2SO4 (*) 3. Concentrated H2SO4 4. None of the above is correct

112.Which one is input device 1. 2. 3. 4.

pressure

1. Fuel nozzle pressure kept minimum to the fuel filter 2. Pressure should be adequate or correct setting (*) 3. Electric s/w on to indicate the fuel quantity on gauge 4. Fuel nozzle inserted before grounding

1. Chemically clean the metal by removing oxide film (*) 2. Increase strength. 3. Make strong joint.

1. 2. 3. 4.

Outboard tank drain first (*) Fuselage tank drain first Inboard tank drain first All tank drained together

Keyboard Mouse Telephone line All are the correct (*)

119.Transistor used as

1. Voltage Regulator / Doublers. 2. Rectifier

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 3. Amplifier (*) 4. All the Correct

127.Mark the correct statement 1. Detection w4elds in thicker material UFD is best 2. X-ray best for welds in sheets 3. Both 1 & 2 are correct (*) 4. All of the above is correct

120.Convert 37 decimal into binary 1. 2. 3. 4.

100101 (*) 111111 101010 110110

121.How will you remove the screw 1. 2. 3. 4.

128.When flying along magnetic equator, dip will be

By welding Drill the head (*) Both 1 & 2 are correct None of the above is correct

1. 2. 3. 4.

122.Bevel gear is used to 1. 2. 3. 4.

129.Identification of alloy is made of by

Transmit single load Transmit heavy load Transmit motion at on angle to (*) Transmit motion between two parallel shaft

1. Alloy identified by color, content by stripes (*) 2. Alloy by stripes & content by color. 3. As in 2 and number. 4. None of the above is correct.

123.After cyaniding quenching is done in 1. 2. 3. 4.

130.Heat treated parts having bake-dirt & scale can be cleaned

Brine Water Oil Both 1 & 3 are correct (*)

1. 2. 3. 4.

124.To stop solder from flowing normally 1. 2. 3. 4.

Clay is used A flux is used (*) Metal boundary is used. None of the above is correct.

1. 2. 3. 4.

Strength of part Surface hardening & hard spots Corrosion resistance All of the above is correct (*)

132.The soaking time varies as

Is done at low temperature brazing Produces strength equal to parent metal Both 1 & 2 are correct (*) None of the above is correct

1. Till alloy uniformly heated 2. 2 hrs / unit volume 3. 1 hr / unit cross section area 4. None of the above is correct (*)

126.Flame is used to heat metal during heat treatment for 1. Small parts 2. Where furnace is not available 3. Heat treatment requirement is not very exacting 4. Large parts & where a particular area is to be heated (*) CORRECT ANSWER IS MARKED * AT END

Wire brush Scraping Sand blasting None of the above is correct (*)

131.Pre & past treatment of cad-plating of ferrous part depends on

125.Hard soldering (silver soldering is low temperature brazing) 1. 2. 3. 4.

Increased Remain unchanged (*) Decreased Depends upon direction of flight

116

133.Vernier scale is also used in 1. 2. 3. 4.

Microscope & spectrometer Sextant & spectrometer Both 1 & 2 are correct None of the above is correct (*)

REVISED OBJECTIVE QUESTIONS & ANSWERS 134.In brazing

2. Resistance 3. Inductance 4. All of the above is correct

1. Post heat treatment may be carried to relieve stresses (*) 2. Post heat treatment may not be carried to relieve stresses 3. As 1 & 2 are in correct

141.Which of the following is used as voltage regulator device 1. 2. 3. 4.

142.Range of ammeter can be increased by

135.Pre-pregs material is

1. 2. 3. 4.

1. Eleminate manual mixing & weighing 2. Must be stored in freeze. 3. Also made in unidirectional 4. All of the above is correct (*)

1. Low resistance in series 2. High resistance in series 3. Low resistance in parallel (*)

1. Boron fibre is made by depositing boron 2. Tungsten & ceramic fibre in high heat application 3. Ceramic used in heat application, dissipating heat slowly (*) 4. Both 1 & 2 are correct

144.Transistor is biased

1. 2. 3. 4.

137.Disbond & water in honeycomb & impect damage is detected by Laser holography (*) Ultrasonic Visual inspection None of the above is correct

Base & emitter forward biased. Base & emitter reverse biased. Collector is reversed biased. 1 & 3 are correct. *

145.In tetrode, the screen grid is 1. Always at positive potential & the voltage is less than plate voltage (*) 2. At negative potential & the voltage is less than plate voltage 3. Voltage is more than plate voltage 4. None of the above is correct

138.In NPN transistor, arrow heat indicates 1. 2. 3. 4.

Connecting high resistance in parallel Connecting high resistance in series Connecting low resistance in parallel (*) Connecting low resistance in series

143.Ampere meter has

136.Which statement is correct

1. 2. 3. 4.

Carbon pile voltage regulator Magnetic amplifier regulator Transistor regulator All are correct (*)

Hole flow (*) Electron flow Minority carrier flow from emitter to base Majority carrier flow from emitter to base

146.In square threads

139.Which statement is correct

1. 2. 3. 4.

1. Weld in thick material can not be detected by ultrasonic 2. Weld in thin material can be detected by X-ray (*) 3. Always detected by dye penetrant 4. All above are correct

Width, height & length are same Difficult to machine More strength All are correct (*)

147.In ATA-100 systems, 36 represents

1. 2. 3. 4.

140.The opposition offered in AC circuit are called

1. Impedance. * 115

Hydraulic system. Oxygen system. Pneumatic system. (*) Landing gear system.

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 3. Flux is used 4. All of the above is correct (*)

148.Which of the statement is correct regarding bearing

155.The thickness of the conducting & nonconducting coating in ferrous metal can be measured by,

1. If corrosion is found on the outer surface, it should be rejected 2. Bearing must be inspected periodically at least once in a year (*) 3. Shielded bearing is used be inspected for corrosion 4. Both 2 & 3 are correct

1. 2. 3. 4.

Varnier coliper Varnier micrometer Ultrasonic Eddy current method (*)

156.To measure the thickness of the hollow tubular member normally done by 1. 2. 3. 4.

149.The diameter of the aluminium sheet increase 1. 2. 3. 4.

As the gauge no increase As the gauge no decrease (*) Remain constant Varies from gauge to gauge

157.A combination set is used as

150.Piezo electricity is produced 1. By the vibration of ceramic 2. By the vibration of quartz, Rochelle salt & ceramic (*) 3. Sound waves have no connection with this 4. All are wrong 151.Titanium can be identified by 1. Spark test (used for various metal & some time from ? 2. Moisturing & scratching with a pencil 3. Chemical test 4. Both 1 & 2 are correct (*) 152.The heat resistance resin is 1. 2. 3. 4.

Epoxy (cyclo eliphatic resin) (*) Polyester Thermosetting plastic Thermoplastic

Dipth, gauge, tri-square, scriber (*) Protractor, scriber, trisquare Center heat, protractor, scriber None of the above is correct

158.Mark the correct statement regarding the hardness tester 1. 2. 3. 4.

Brinell system uses diamond point Vikers uses round ball Above are correct None of the above is correct (*)

159.In nickel cadmium battery 1.

3.

During discharging, the current flows the negative pole to positive plate & oxygen atoms are driven out from the positive plate (*) Electrical leakage is measured by millimeter between cell & casting Both 1 & 2 are correct

160.Hydrogen is given off during

Solution heat treatment (*) Casted Precipitation heat treatment Both 1 & 3 are correct

1. 2. 3. 4.

All stages of LAB servicing Over charging of Ni-cd (*) Both 1 & 2 are correct None of the above are correct

161.Dies are used to cut 1. Internal threads of a nut 2. External threads of a nut (*)

154.Precaution in Al, welding

162.In a capacitor

1. Neutral flame is used 2. Preheating is needed CORRECT ANSWER IS MARKED * AT END

1. 2. 3. 4.

2.

153.For maximum ductility, elongation & impact resistance of Mg-alloy is 1. 2. 3. 4.

Destructive method Eddy current method Ultrasonic method (*) None of the above is correct

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 1. Capacity depends on separation of plates & measured in farade 2. Capacity depends on area of plates & measured in farade 3. Capacity depends on nature of dielectric material 4. All of the above is correct (*)

169.Which is the correct statement regarding heat treatment of Al-alloy 1. Longer soaking time & lower cooling rate result in greater softening (*) 2. Longer soaking time & higher cooling rate result in greater softening 3. Soaking time should be minimum 4. None of the above is correct

163.Relation between volt, ampere & weber is given by

170.If a magnet is dropped through a current carrying coil, it will fall with

1. Amp / volt = weber 2. Amp × volt = weber 2

1. Uniform acceleration equal to – g 2. Uniform acceleration less than – g 3. Non – uniform acceleration more than – g 4. Non uniform acceleration less than – g (*)

3. Volt / amp = weber 4. None of the above is correct (*) 164.Mooring is the process in which 1. Head of the a/c is in prevailing wind whenever possible 2. Choke all wheels fore & aft 3. Tie down the point on aircraft 4. All of the above is correct (*)

171.Type of heat treatment of component depends on 1. 2. 3. 4.

165.Which statement is correct relating to swaging 1. If the diameter of fitting is too large, it has been over swaged 2. If the diameter of fitting is too small, it has been under swaged 3. If the diameter of fitting is too small, it has been over swaged & cable fitting must be rejected (*) 4. None of the above is correct

Proper used Composition of alloying element (*) Cold work is done All of the above is correct

172.In annealing, greater softening can be achieved, if 1. Cooling rate is very low, & it is cold in furnace 2. Heating just above the upper critical point 3. Both 1 & 2 are correct (*) 4. None of the above are correct

166.How will you convert a galvanometer in voltmeter

173.Transfer metal from one object to another by chemical & electrical means is done to

1. By connecting a high resistance in series with galvanometer (*)

1. Protect base metal against corrosion & wear 2. Increase the dimension of a part 3. Protect base metal against reaction 4. All of the above is correct (*)

167.Zener diode 1. Has high forward voltage rating 2. Has negative resistance 3. Has a sharp breakdown of low reverse voltage (*) 4. Used as amplifier

174.The circular pitch (p) of a gear is 1. Point where the pitch circle of two meshing gears touch 2. Diameter of pitch circle 3. Thread per inch of pitch circle 4. None of the above is correct (distance from the one tooth to the center of next consecutive tooth measured on the pitch circle) (*)

168.In a dye penetrant test before applying developer, what shall be done 1. Dye should be completely flushed out 2. Only excessive dye should be removed 3. The rinsing operation is completely carried out 4. Both 2 & 3 are correct (*)

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 175.Corrosion on Al-alloy is visible in the form of 1. 2. 3. 4.

1. Eddy current 2. Dye penetrant 3. Ultrasonic (*)

Powdery form (white) (*) Grey spot Pitting Shining spark around the sport

183.Heat, treatment of Non Ferrous Alloy is carried out by 1. 2. 3. 4.

176.The hook spanner is used for 1. 2. 3. 4.

Round nut having slot at internal (*) Square nut having slot at internal Hexagonal nut having slot at internal All of the above is correct

184.To change the fire in case of only one tire, the jack should be used

177.Aviation snips are used for cutting 1. 2. 3. 4.

1. 2. 3. 4.

1. 2. 3. 4.

Steel sheets Al-sheets (Heat Treated) (*) Hard material Soft material

178.The sensitivity expressed in

of

voltmeter

is

Ohm Watt Emf 1/Amperes (*)

1. 2. 3. 4.

180.In coolers or radiators where operating temperature is high soldering is not done but 1. Soldering can be done with approved flux 2. Inert gas welding 3. Seam welding (*) 4. Spot welding of

flux

in

1. The diametrical pitch & pitch diameter in a spur gear are same 2. If the diametrical pitch (DP) is given, you can find out the addendum (*) 3. If we divide DP by PD, we can get size of teeth 4. If the DP is given, you can not find out the addendum 186.A charge is moving along magnetic lines of force

Before starting reaming After finishing reaming Before & after starting reaming (*) Done

181.The function operation is to

To just clear the tire from ground Hydraulic jack (single base jack) Chockes used with remaining wheel All of the above is correct (*)

185.Mark the correct statement

179.In inspection of bolt holes for pits & cracks is carried out 1. 2. 3. 4.

Solution heat treatment Solution & precipitation T Age hardening All of the above is correct (*)

If force will always act No force will act (*) May act or may not act None of the above is correct

187.Weld decay can be prevented by 1. 2. 3. 4.

Presence of titanium & niobium Quick heating Low temperature (*) All of the above is correct

188.The size of determined by

the

cold

chisel

is

brazing

1. Minimize oxidation (*) 2. To break the surface tension of filling material 3. To flow filler material all round 182.Cracks in thick material welding can be checked by

CORRECT ANSWER IS MARKED * AT END

116

1. 2. 3. 4.

Length of cutting edge Weight Width of cutting edge (*) None of the above is correct

189.The term associated with worm gear is 1. Throat 2. Throat radius 3. Pitch

REVISED OBJECTIVE QUESTIONS & ANSWERS 4. Both 1 & 2 are correct

2. Releave internal stress 3. Both 1 & 2 are correct (*) 4. None of these

190.Temperature of work in a furnace can be measured by

198.The given tool is used for 1. 2. 3. 4.

Thermistor Pyrometer Color of work Thermocouple

1. 2. 3. 4.

191.For reaming holes should be under size 1. 2. 3. 4.

199.Aviation ship is used for cutting:

About 0.003" to 0.007" (*) About 0.007" to 0.010" Not necessary None of these

1. 2. 3. 4.

192.Convert 29 into binary system

Heat treated Al-alloy & stainless steel (*) Cu & its alloy Any soft metal All the above

200.This micrometer reading is showing: 1. 2. 3. 4.

1. 111012 (*) 2. 101112 3. 110112 4. None of these

Positive zero error Negative zero error No error None of these

201.The given reading shown

193.The radiographic inspection

1. 2. 3. 4.

1. Low wave length signal travel with velocity of light (*) 2. High wave length signal travel with velocity of light

Positive zero error Negative zero error No error None of these

202.In silver soldering the temperature ranges between

194.In ATA 100 systems marking on the cable as per

1. 2. 3. 4.

1. Prefix & strefix 2. Prefix & suffix (*) 3. Number & letter 195.In an alto meter if there is absence of barometer is pressure, the pitot line is checked by

200°C – 400°C 400°C – 600°C 505°C – 805°C (*) 800°C - 1000°C

203.The ASI instrument consists of 1. 2. 3. 4.

1. Vacuum chamber (*) 2. Micrometer 3. Vacuum Gauge 196.In pitot static system the static vent to of the flat plate tube any where in the a/c structure to prevent 1. 2. 3. 4.

Counter sinking Counter boring Drilling Any one of the above

One capsule Two set of capsules Three set of aneroid capsules There is no aneroid used is A.S.I. (*)

204.Hydrogen gas emits in the battery during servicing 1. During the process of charging 2. Is Ni-cd battery when charging is completed (*) 3. When battery is over charged 4. When connection on their terminal is versed

Position error (*) Instrument error Protection against ice formation Both 1 & 3 are correct

197.The purpose of annealing is to

205.A screw having no head flush with the structure can be turned by

1. Soften the metal

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 1. 2. 3. 4.

Allean key (*) Screw extractor Simple screw driver Both 1 if have hex grove head & 2

1. After welding remove the excess metal with file 2. The filler material should be properly filled & evenly spaced 3. Fill the gap with Cu of brass 4. All are wrong (*)

206.As per figure it is 1. Sector gear 2. As a & when used with external gear – it gives the intermittent rotary motion 3. Spur gear having few teeth broken 4. Both 1 & 2 are correct

213.The thermo-plastic material can be 1. Harden after cooling & soften after heating 2. Harden after cooling but can not be soften after heating 3. Used for making wind shield 4. Both 1 & 3 are correct (*)

207.In oxyacetylene welding to extinguish the flame it is good practice to 1. First close oxygen & then acetylene regulator 2. First close acetylene & then oxygen regulator (*) 3. Close oxygen & acetylene regulators at a time 4. None of these

214.Mg-alloy has no more used in a/c because

208.For welding cracks which type of joints should be preferred

215.Rockwell hardness test is carried on specimen to:

1. 2. 3. 4.

Butt joining (*) Lap joining Edge joining None of these

1. 2. 3. 4.

209.In brazing which type of flame is used 1. 2. 3. 4.

Carburizing Neutral (*) Oxidizing Any one can be used

1. 2. 3. 4.

Counter sink Counter bore (*) Reamer Any one of them

Pilot Straightner Guide All the above are wrong

Neutral flame Oxidizing flame Reducing flame No flame will be – produced in this manner

1. Heater, cathode, plate & meshing wire control (gird) between plate cathode (*) 2. Heater, cathode & plate 3. Heater, cathode, control grid, screen, grid & plate 4. Heater, cathode, control grid, screen suppressor grid & plate 218.For converting galvanometer voltmeter connect

into

1. High resistance wire in series with meter for increase range (*)

212.For making neat & clean welding

CORRECT ANSWER IS MARKED * AT END

Measure depth Measure resistance to penetration Both 1 & 2 are correct (*) Measure the diameter of impression

217.Triode value consists of

211.The extended round portion which is indicated by letter 'A' in the above figure is known as 1. 2. 3. 4.

Suspectable to corrosion Chances of cracking Highly resistance to corrosion Both 1 & 2 are correct (*)

216.In oxyacetylene, the amount of oxygen & acetylene gases are in equal proportion, as indicated in figure, is the:

210.The given tool is used for making spot facing to seal the washer, nut bolt heat is 1. 2. 3. 4.

1. 2. 3. 4.

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. Low resistance wire in series with meter 3. High resistance wire in parallel with meter 4. Low resistance wire in parallel with meter

226.For changing the direction from linear to reciprocating motion 1. 2. 3. 4.

219.Inductance depends on 1. 2. 3. 4.

No. of turns of the coil Core material of the coil Cross – sectional area All the above are correct (*)

227.Elastic stop jut should not be used where 1. Temperature is very low 2. Temperature is higher than 250°F (*) 3. Vibration is very high

220.Transformer is an electrical device with is used 1. For carrying high voltage distance (*) 2. In radio set 3. Both 1 & 2 are correct 4. None of these

to

228.Step up transformers are characterized by

long

1. High voltage & low current in secondary (*) 2. High current & low voltage in secondary 3. High current & low voltage in primary 4. High voltage & low current in primary

221.In silicon control rectifier, there is 1. Three junction & 3 terminal (*) 2. Two terminals are forward blased & two are reversed blased 3. Four junction 4. None of these

229.Inductive reactance 1. Directly proportional to the frequency of inductance (*) 2. Inversely proportional to the frequency of inductance

222.This figure indicates 1. 2. 3. 4.

230.The amount of electricity a capacitor can store is increased

Delta connection alternator Three phase alternator Wire connection alternator Both 1 & 2 are correct

1. Decreasing the area of the plate 2. Decreasing the distance between the plates (*) 3. Increasing the distance between the plates 4. Selecting the low value of dielectric constant

223.The given figure indicating 1. 2. 3. 4.

Porosity Pitting Tight crack Partially welded lap or tight crack

231.Main memory unit of computer

224.The drill size diameter can be classified satisfactory 1. 2. 3. 4.

1. Stores bulk of data & instructions (*) 2. Stores small amount of data & instructions 3. Performs air thematic 4. Supervise the working of all the units.

1 to 80 A to Z Both 1 & 2 are correct (*) None of the above

232.The capability of the computer system to take logical decisions helps it in

225.Coating of Al-alloy by a layer of pure Al is called 1. 2. 3. 4.

Rack is used with another spur gear (*) Rack is used with another rack Sector gear is used with external gear Both 1 & 3 are correct

1. 2. 3. 4.

Alclad or pureclad (*) Alodizing Anodizing All are wrong

115

Making faster calculations (*) Storing huge amount of data Decision making None of these

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 233.The unit of calculations is 1. 2. 3. 4.

computer

performing

Input unit Memory Output unit ALU (Arithmetic Logic Unit) (*)

234.The basic arithmetic performed by a computer is 1. 2. 3. 4.

3. Using a hole finder 4. All the above are correct (*) 241.A, B & C of the turnbuckle assembly indicates 1. Cable eye, battle abdpin eye respectively 2. Fork, barrel & fork respectively 3. Cable eye, thimble & fork respectively 4. Fork, body & pin respectively

operation

Addition (*) Subtraction Multiplication Division

242.Tapping screws shown in the sketch A, B & C are 1. 2. 3. 4.

235.A finite sequence of steps needed to solve a problem is called 1. 2. 3. 4.

A process (*) A method of solution An algorithm A flowchart

243.Mark the correct statement, A bolt marked with a cross inside a triangle on its head is

236.In computing basic control structure always has 1. 2. 3. 4.

One entry & two exit points Two entry & one exit points One entry & one exit points (*) Any number of entry & exit points

1. Length 3/16" & diameter ½" 2. Diameter 3/8" & Length 5/4" (Nickel Steel) (*)

A heavier gun should be used The gun should be opened up There is no room for revet gun All the above are correct

245.Purpose of heat treating titanium is 1. Relief of stress 2. Hardening to improve strength 3. 1 & 2 & also to provide maximum ductility for subsequent cold working 4. All of the above are correct (*)

238.Type of Hi-shear pin shown in the sketch is known as 1. 2. 3. 4.

Dowel pin (*) Tapped pin Special cam None of the above is correct

246.Channels, angles, T-sections can be made by the process known as

239.While riveting if the damage shown in the sketch takes place, it is known as 1. 2. 3. 4.

1. Al. alloy both with close tolerance 2. NAS close tolerance 3. Corrosion resistant AN standard steel both 4. AN steel both 244.Bolt AN6-10 indicates

237.Reverse riveting is sued where 1. 2. 3. 4.

Counter sunk oval, truss & Philips Counter sunk oval, round head & Philips Counter sunk, round & slotted Both 1 & 2 are correct

Damaged place due to riveting tool (*) Cracked head due to hard material Rivet tight & plates bulged None of the above is correct

1. 2. 3. 4.

Rolling Extruding (*) Forging Hammering

247.For gas welding, while lighting the blow pipe, if flash back occurs, the cause may be due to

240.Rivet hole can be located by 1. Regulators are pressure (*)

1. Punching pilot holes 2. Using of a template

CORRECT ANSWER IS MARKED * AT END

116

not

set

to

correct

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. Flow of gas is not ensured before lighting takes place 3. Both 1 & 2 are correct & over heating 4. All use of spark lighter 248.When certain subjected to

natural

crystal

1. 2. 3. 4.

is 255.Which treatment process of metal produces a hard & wear resistant surface area with strong & tough in core

1. Vibration sound beam, an altering current is produced 2. Mechanical stress, an electric field it produced (*) 3. Application of voltage, mechanical stress is produced 4. All the above are correct & also in case of vibration, the frequency of vibration depends on the thickness of the crystal.

1. 2. 3. 4.

1. An imaginary circle passing through the points at which meshing of teeth takes place 2. The diameter of the pitch circle 3. The number of teeth per inch of pitch diameter (*) 4. None of the above is correct

Ultrasonic (*) Eddy current Dye penetrant Magnetic Particle

250.Zinc chloride is the best flux to sue soldering 1. 2. 3. 4.

257.In connection with square thread, mark the correct statement

Wrought iron, steel or stainless steel (*) Cast iron, nickel, lead Monel metal, galvanized iron All above are correct

1. The width & depth of the thread are equal to the space between threads 2. It is very strong 3. Accurate machining of this thread is difficult 4. All of the above are correct (*)

251.Anneanlaing is the process that 1. 2. 3. 4.

Makes the metal soft Relieves the internal strain That lowers the strength of the metal Both 1 & 3 are correct (*)

258.While drilling a hole, of the finished hole ahs a rough surface, the cause is 1. Dull drill was used 2. The drill penetrated the work very slowly & become very hot while in operation 3. The drill hole was made very rapidly 4. Both 1 & 2 are correct (*)

252.T4 & W for alluminium alloy indicates 1. Solution heat treated & quenched but not aged (*) 2. Only solution heat treated 3. Precipitation heat treated 4. Solution heat treated & artificially aged

259.Length of hackshaw blade is 1. Distance from the centre of one hole to the center of the another hole of other end (*) 2. Total length over which teeth are spreaded 3. Length from one end to the other end 4. All of the above are wrong

253.Scattered dot when viewed under ultra violet radiation indicates 1. 2. 3. 4.

Case hardening (*) Tempering Annealing Normalizing

256.The diametrical pitch of a gear is

249.Delamination can be detected by which method 1. 2. 3. 4.

Porosity (*) Lack of penetration Craters Channeling

Fine porosity Gross porosity Pitting Both 1 & 3 are correct (*)

260.Micrometer shadow is

254.If a damp flux is used while welding with oxy-acetylene flame, then it will cause

1. Shadow of the thimble (*) 2. Shadow of he sleeve 3. Shadow of the spindle

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 4. None of the above

269.Turn buckle is in safety minimum

261.Most accurate method of classifying drill size is 1. 2. 3. 4.

1. Not more than one thread is exposed outside barrel 2. Half number of threads are inside the barrel 3. All the threads are inside the barrel 4. Not more than 3 threads are exposed (*)

1/16" to 1 1/64" to 11" A to Z No. 80 to No. 1 (*)

270.Trammel is used 262.To ream a hole, the hole must be drilled 1. 2. 3. 4.

1. 0.001" to 0.007" undersize 2. Same size as given 3. 0.003" to 0.007" undersize (*) 263.Flux density is measured in tesla – weber/m2 = 1. 2. 3. 4.

Position line Phantom line Hidden line (*) Broken line

272.A drawing in which all the parts are brought together as an

264.Altimeter in absence of manometer may be checked by 1. 2. 3. 4.

271.The line used to show an edge which is not visible is a 1. 2. 3. 4.

Gauss Farad Ampere Hennery

To draw large circle (*) To draw large square To draw large rectangle To draw large pentagon

1. 2. 3. 4.

Vacuum gauge (*) Vacuum chamber Micromanometer All of the above

Working drawing Detail drawing Assembly drawing Installation drawing (*)

September – 1994

265.Zenor diode is used

1. The most commonly used symbols for electromagnetic flow detection

1. As voltage regulator (*) 2. To prevent spikes 3. Both 1 & 2 are correct

1. 2. 3. 4.

266.Binary expression is known as 1. Bit (*) 2. Byte 3. None of the above are correct

UFD MFD (*) PFD EFD

2. In oxyacetelene welding it is better practice while shutting off the flame

267.Base of NPN transistor is 1. 2. 3. 4.

1. 2. 3. 4.

N type semiconductor P type (*) N-P diode P-N diode

Shut off oxygen first Shut off acytelene first (*) Turn off the regulator Turning off simultanelously

3. The silver soldeny metal melts at 268.Bolt without any specification while using 1. Should be cleaned & degreased thoroughly (*) 2. Should be greased on the thread 3. Should be greased thoroughly

1. 200 – 400 degree cent 2. 500 – 850 degree cent (*) 3. 1000 – 1600 degree cent 4. A crack may be repaired by 1. Butt welding (*)

CORRECT ANSWER IS MARKED * AT END

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. Spot welding 3. Lap welding 4. Edge welding

1. 2. 3. 4.

5. Annealing is the process 1. 2. 3. 4.

Makes a metal soft Relives the internal strain Toughen the metal Both 1 & 2 are correct (*)

A plate, grid & a heater A plate, cathode & a heater Plate, screen & a heater Plate, cathode, heater & wire screen between the plate & cathode (*)

13. Zenor diode is used 1. To regulate voltage (*) 2. Controls the spikes 3. Both 1 & 3

6. T & w are the symbols utilized for heat treatment of Al-alloy sheet indicates

14. Diode, triode & transistors

1. Solution heat treated only 2. Solution heat treated & quenched but not aged (*) 3. Precipitation heat treated 4. Solution heat treated & artificially aged

1. Obey Ohm's Law 2. Does not obey ohm's law (*) 15. Taking all the factors into consideration the most commonly used metal as electrical conducting

7. Rockwell hardness tester 1. Measures resistance to penetration 2. Measures the diameter of impression 3. Measures depth of impression 4. Both 1 & 3 are correct (*)

1. 2. 3. 4.

the

16. In gear system, a driver & driven on the shaft to get the same direction of rotation

8. Which is true in relation to magnesium alloy

1. Bevel gear is used 2. Internal & external gear combination is used 3. As in (1) & no mechanical advantage is obtained 4. None of the above is correct (*)

1. It is most susceptible metal to corrosion 2. It has get high resistance to corrosion quality & can be heat treated 3. It is the lightest metal used in the a/c structure 4. Both 1 & 3 are correct (*)

17. In regular interval, to calibrate micrometer where you carried out

9. Galvanic corrosion is 1. Dissimilar metal corrosion (*)

a

1. In normal environment & controlled temperature (*) 2. In air conditioned room but does not proof 3. A room is calibrated upto 20-30 microns, but not air conditioned 4. A room is calibrated upto100-150 microns, & also air conditioned

10. Decimal 29 is equivalent to binary number 1. 2. 3. 4.

Aluminium (*) Copper Silver Iron

11101 (*) 10110 11110 10101

18. To bring the sheet together to get air tight joint, we use

11. SCR (Silicon Control Rectifier) has 1. 2 terminals 2. 2 terminals are forward biased & 1 terminal are / is reverse (*) 3. 3 terminals 4. None of the above

1. 2. 3. 4.

Draw set Cleco fastener (*) Aligning camp None of the above is correct

19. Choose correct statement 12. A triode consists of 1. Philips screw – driver is blunt at end (*)

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. Read & prince screw driver is blunt on end 3. Both are interchangeable 4. All of the above is correct

2. When lead acid battery gets over charged 3. Towards the end of the charging of Ni-cd battery (*) 4. Both 2 & 3 are correct

20. To avoid vibrating stress in tube lines 27. The strength of the electromagnet is determined by

1. No bend is done 2. Two bend is done 3. Atleast one bend is done (*) 4. Preferably no bend is done, & if bend is done, it will be less than 45°

1. 2. 3. 4.

21. Dzus fastener consists of 1. 2. 3. 4.

28. ½ - 13 NC – B indicates

Stud, washer & receptacle Stud, grommet & receptacle (*) As in (2) & grommet is made of spring None of the above is correct

1. Pitch diameter ½" 2. B – external thread 3. 13 NC – indicates 13 TPI & have national form 4. All of the above is correct (*)

22. Air drill in aviation industry in preferred to electric motors drill.

29. A vernier caliper has least count 0.02 cm & have a negative error – 0.02 mm reading on main scale is 0.48 & 6th division of vernier scale coincide with main scale. The reading is

1. No other equipment is required 2. It is available in various shape, sizes, running speed, drilling head angle (*) 3. High initial cost & less maintenance 4. Both 1 & 2 are correct 23. Double flaring is 1. Provide smooth & concentric surface 2. As in (1) & resistance to shearing effect of torque 3. As in (2) & generally used in a/c (*) 4. As in (3) & diameter of tube is reduced. 24. A galvanometer may be converted to a voltameter by connecting 1. Low resistance coil in parallel with meter 2. High resistance coil in parallel with meter 3. High resistance coil in series with meter to increase range (*) 4. Low resistance coil in series with meter 25. In ATA coding system the size & type of the electrical cables / wires in a/c are given by 1. 2. 3. 4.

1. 2. 3. 4.

0.485 cm 0.488 cm 0.062 mm (*) None of the above is correct

30. Counter boring & spot facing is 1. Having same operation 2. Counter boring is done for nut 3. Sport facing is the operation of making flat circular surface around hole (*) 4. None of the above is correct DGCA Questions 1. Aviation snips are used on 1. Heat treated Al alloy sheet & Stainless Steel (*) 2. Fibre 3. Sheet Steel 4. All of the above is correct 2. Solder used for electrical connection has the M & range

Prefix & suffix Side by side Numbers & Letters (*) None of the above is correct

1. 2. 3. 4.

26. Hydrogen gas is given up 1. Entire servicing of Ni-cd battery CORRECT ANSWER IS MARKED * AT END

No. of turns of the coil Strength of the magnet Speed of rotation of the magnet All of the above (*)

116

100 - 200°C (*) 100 - 3000°C 300 - 6000°C 200 - 3000°C

REVISED OBJECTIVE QUESTIONS & ANSWERS CG within limits using a minimum amount of wt. (*) 3. Preferable permanent ballast 4. Preferable temporary ballast

3. Helical gears used for 1. Transmit motion to shaft at an angle 2. Transmit motion to shaft which is are perpendicular together 3. To carry larger loads (*) 4. None of the above is correct

11. Electric weighing machine 1. Switched – ON before minutes 2. Switched – ON just prior to weighing so that equipment is not heated (*) 3. As in (1) & circuit is provided to get stabilized 4. All are correct

4. The best conductor available considering all factors in a/c use is 1. 2. 3. 4.

Copper Alluminium (*) Brass Silver

12. Static wick is mentioned in the _______ chapter of the maintenance manual

5. The binary equivalent of 29 is 1. 2. 3. 4.

1. 2. 3. 4.

11101 (*) 10101 10011 11111

21 23 (*) 24 32

13. Altimeter is checked barometer is not available

by

when

6. An altimeter consists of 1. Micro manometer 2. Vacuum chamber (*)

1. Two aneroid capsules 2. Pressure setting knob for adjusting barometric pressure 3. Three aneroid capsules 4. All the above are correct (*)

14. Static vents in pitot static system are located with 1. 2. 3. 4.

7. Most headless set screws are turned by 1. 2. 3. 4.

Screw driver Philips screw driver Internal screw driver Allen wrench (*)

15. X-ray used in NDT inspection 1. Have short wave length high penetrating power 2. Have long wave length low penetrating power

8. SCR is 1. Four junction diode 2. Three junction diode (*) 3. Two junction forward based with one reversed biased 4. Plate, cathode, heater & fine mesh of wire between plate & cathode

16. To repair a crack, the join to be formed 1. 2. 3. 4.

9. Doubller plate is 1. 2. 3. 4.

Free at air stream (*) To eliminate ice formation 1 & 2 are correct Flexible

Same size Double the thickness Just half the thickness None of the above is correct (*)

Lap joint Butt joint (*) Bee joint Corner joint

17. A transistor is 1. Amply the low input signal to high output signal (*) 2. Used as a rectifier 3. Used in transducer set 4. 1 & 2 are correct

10. Ballast is used to balance the a/c 1. Located as near as to CG 2. Is minimum weight & places as far aft or as far forward as possible to bring the

18. Purpose of point in either straight or twisted drill

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. 0.001 cm 3. 0.09 mm 4. 0.009 cm

1. To provide the flow of the cutting fluid to the cutting edges 2. For clip removal 3. To provide lip cutting edges (*) 4. All of the above

26. The component shown as 1. 2. 3. 4.

19. Clevis bolt is used for 1. 2. 3. 4.

Shear loads only (*) Tensile loads only As a pin in control systems 1 & 3 are correct

20. In a capacitor the voltage decreases with increase in 1. 2. 3. 4.

27. Hydrogen is given off rating

Dielectric strength Thickness of dielectric (*) Frequency Area of the plates

1. 2. 3. 4.

Machine surfaces Heavy forged structures Tight fit assemblies (*) 2 & 3 are correct

1. Is used as rectified 2. Is used for voltage regulation (*)

1. ∆ Ohm

23. The most accurate system for drill size is

0.001 cm 0.002 cm (*) 0.002 mm 0.001 mm

25. In a vernier micrometer of part of main scale is divided into 10 of scale, the main scale has the graduations of 1 mm find the least count.

1. 2. 3. 4.

Nickel plating Cadmium plating (*) Zink plating Galvanizing

31. Rough surface of castings & bars etc removal, by an abrarive cutting tool is called 1. 2. 3. 4.

Grinding (*) Snagging Lapping Finishing

32. Replace a solid rivet with a hollow rivet we would check for 1. Material & compression strength 2. Material & shear strength (*)

1. 0.01 cm (*)

CORRECT ANSWER IS MARKED * AT END

2. 0.15 Ohm (*) 3. 1.35 Ohm 4. 1.50 Ohm 30. For most satisfactory plating on AGS & non steel materials

Fraction (1/16" – 31/2") 1/64" – 11/2" A to Z No. 80 to No. 1 (*)

24. In a vernier scale, 24 division are equal to 25 division of vernier so 1 cm of main scale is divided 20 equal parts, find the least count 1. 2. 3. 4.

Susceptible is corrosion Corrosion precisiant & light weight Has tendency in crack 1 & 3 are correct (*)

29. When switch 'S' is open, voltmeter indicates 1.5 v & when closed indicates 1.35 v current is 1 amp what is the internal resistance of the battery.

22. The zener diode

1. 2. 3. 4.

1. During all stages of battery servicing 2. When battery is over heated in Ni-cd battery (*) 3. During charging operation of the battery 4. During discharging operation of the battery 28. Magnesium is

21. American close tolerance nut is used for 1. 2. 3. 4.

Flange Scupling Spacer 1&2

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 3. Heat treatment 4. Material & tensile strength

40. In case of flouruscent die penetrant inspection, the developer used is

33. DTI indicator is 1. 2. 3. 4.

1. Eccentricity of a small levels in rotating shafts 2. To measure the dimension 3. To check the depth of large parts 4. All of the above is correct (*)

41. Round heat rivet is

34. In hot oil & chalk methods the following can not be detected 1. 2. 3. 4.

1. 2. 3. 4.

Vertical cracks Horizontal cracks Wavy cracks Minute flows & tightly shut cracks (*)

1. 2. 3. 4.

Plain washer Special washer Lock washer (*) 1&2

1. 2. 3. 4.

Three Six Eight (*) Four

Dissimilar action corrosion Shape of head (*) Length of rivet None of the above is correct

44. Fillet welding is 1. Edges joined perpendicularly by (*) 2. Edges joined parallely by clambering 3. Edges joined keeping the plates one over the other parallely, one being horizontal 4. Clearance done at the edge of the gear teeth

37. Structural screw will have 1. Same strength of the AN bolt (*) 2. Half of strength of the AN bolt 3. Sometimes less than half of strength of the AN bolt 4. Both 2 & 3 are correct

45. American standard control cables are made of

38. In different countries, the same rate battery was charged which gets more charged 1. 2. 3. 4.

Thickness of the parts will be reduce (*) Parts get brittleness Toughness increase Fatigue strength of parts decreases

43. When selecting a rivet for replacement of a solid rivet, we observe for

36. How many types of fits according to American standards 1. 2. 3. 4.

430 (*) 442 462 456

42. Fretting corrosion effect

35. The following washers are not used on the part which is exposed to air flow 1. 2. 3. 4.

Dry powder Powder suspended in volatile liquid Powder suspended in water All of the above is correct (*)

1. 2. 3. 4.

80 f, 1 hour 80 of, 1 hour 60 of, 30 minute 70 of, 45 minute (*)

Molybenium steel (*) Cast steel Stainless steel Brass

46. Regarding thermal runway which of the following is not correct

39. BA british unified bolts & screws can be recognized by

1. Imbalancing of cells 2. Deep cell treatment 3. Due to constant current more chances for thermal runaway (*) 4. Over heating of a cell

1. Violet dye 2. UNF stamping on the bolt 3. Raised or recessed circles on the head (*) 4. All of the above is correct

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 47. For any battery the charged without constant current conditions can be found while changing. 1. Specific gravity taken at interval of 30 min three consecutive redings should be same 2. Gassing will occur (*) 3. Voltage stops rising 4. 1 & 2 are correct 48. A 35 AH, 12 V battery is discharged according to the following rates which will give maximum capacity? 1. 2. 3. 4.

10 hrs, discharge rate 15 hrs, discharge rate 20 hrs, discharge rate 5 hrs, discharge rate (*)

1. Diameter as 1/32 inches & inches 2. Diameter as 1/16 inches 1/16 inches 3. Diameter as 1/16 inches & inches (*) 4. Diameter as 1/16 inches 1/100 inches

1. 2. 3. 4.

1. Same strength of the AN Bolt (*) 2. Half of strength of the AN bolt 3. Sometimes less than half of strength of the AN bolt 4. Both 2 & 3 are correct acid

54. Is fastener dimensions are specified as length as 1/8 & length as length as 1/8 & length as

55. Radio graphic inspection, which of the following waves are used

49. Structural screw will have

50. Capacity in lead determine by

2. SP 3. ACS 4. MS

battery

as

X-rays r – rays (Gamma Rays) Ultraviolet rays 1 & 2 are correct (*)

56. Dump fluid increases 1. 2. 3. 4.

Porosity (*) Lack of penetration Channel low Clarity of formation

57. Marking is done on constant barrel 1. 2. 3. 4.

Density of electrolyte (*) Plate area Internal resistance No. of cells

1. 2. 3. 4.

51. The motor with two different coils wound on difference sence, which can rotate in two direction is 1. 2. 3. 4.

Series Shunt Compound (*) Differentially compound motor

52. The treatment of Magnesium, following chemicals are used in

1. Electrolyte bath 2. Potassium dischromate, sodium chromate & zinc chloride (*) 3. Ammonium cyanide, potassium cyanide & zinc sulphate 4. None of the above 53. Society of british aerospace has given rivet standard as 1. As (*)

CORRECT ANSWER IS MARKED * AT END

58. Black pitting & corrosion occurs on 1. 2. 3. 4.

the

To avoid miscalculations (*) More precise valued To create miscalculations None of the above reddish

Corrosion resistant steel (*) Cast iron Magnecium Aluminium

59. For getting high ampere hour capacity & high terminal voltage the plate of cells should be connected as 1. In series so that to get high resistance 2. In series so that to get low resistance (*) 3. In parallel so that to get low resistance 4. In parallel so that to get high resistance 60. The CP of bevel gear is

116

brown

internal internal internal internal

REVISED OBJECTIVE QUESTIONS & ANSWERS

1. Tooth per inch 2. The distance from the center of open tooth to the center of next tooth measured on the pitch circle 3. The distance from the center of one tooth to the center of next tooth (*) 4. None of the above

1. Formed by pneumatic hammer (*) 2. Manufactured head 3. Special rivet 69. Disposable load is 1. Fuel that can be thrown out of a/c during emergency conditions (*) 2. All persons & their belongings, fuel, oil that is used in the journey 3. Empty load & variable load 4. Fuel & oil which is unusable

61. The binary expression of 296 is 1. 2. 3. 4.

101011101 100101000 (*) 111001100 110010111

70. The stretch shows

62. The number of TPI is measured by 1. 2. 3. 4.

1. 2. 3. 4.

Screw pitch gauge (*) SWG Thickness gauge None of the above

Buttress thread ACME thread V-thread Square thread

71. The method used in temper steel depends upon

63. The output of an OR gate will be given 1. 2. 3. 4.

1. 2. 3. 4.

When all inputs are energized When all the inputs are zero Any one of the input is energized 1 & 3 are correct (*)

72. The readings instruments is

64. Computer consists of 1. 2. 3. 4.

Printer, decoder, memory Input, Output, CPU (*) Input, Output, Printer None of the above

1. 2. 3. 4.

65. The decimal number for 10111011101 is 1. 2. 3. 4.

1501 1500 1401 1600

on

the

1.318" 1.314" 2.300" 3.150"

1. Different in use 2. Similar but hard disk can store more than floppy disk (*) 3. Similar but hard disk can store less than floppy disk 4. None of the above

Fixed capacitor Variable capacitor Variable resistor Fixed resistor

74. The readings shows as 1. 2. 3. 4.

67. O-rings are checked for internal cracks by 1. 2. 3. 4.

shown

73. The computer hard disks & floppy disks are

66. The drawing symbol 1. 2. 3. 4.

Type of steel Size of steel Density of steel All of the above (*)

4 power magnifying glass By rolling on inspection cone By rolling on inspection dowel All of the above (*)

2.500" 0.250" 0.275" 0.200"

75. Bevel gears used for 1. Transmission of loads for between shafts to each other (*) 2. For variation of speed 3. In speed reducers

68. Shop head of a rivet is

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 4. 1 & 3 are correct

2. To increase the bonding 3. To provide flow to the molten metal 4. All of the above are correct (*)

76. The component shown is 1. 2. 3. 4.

Universal wrench Spanner French Open end wrench None of the above

84. An optical instrument used to inspect the interior structure of a component is 1. 2. 3. 4.

77. The DP in a gear indicates 1. 2. 3. 4.

Number of teeth per inch Size of the gear teeth Both 1 & 2 are correct (*) None of the above

85. The check interior surface condition of cylinders & surfaces, instrument used is

78. Barcol tester is used for 1. 2. 3. 4.

1. 2. 3. 4.

Steel Al-alloy Titanium As in 2 & copper (*)

Boroscope Fibrescope Endoscope or introscope All of the above are correct (*)

86. Mark correct statement

79. Calculate the reading 1. 2. 3. 4.

Fibrescope Boroscope Endoscope All of the above (*)

1. A – radial load, B – radial load & thrust load 2. A – thrust load, B – radial load 3. A & B – thrust load 4. A & B – radial load

0.1001 0.250 0.4250 0.200

87. Reading is 80. Identify the drawing symbols given below 1. Normal C.B., Push – pull C.B., Push – pull C.B. 2. Automatic C.B., Push C.B., Push – pull C.B. 3. Push-pull C.B., Automatic C.B., Normal C.B. 4. Automatic reset, push reset, push reset pull off

1. 2. 3. 4.

0.257 0.270 Two hundredths of an inch Three hundredths of an inch

88. Radiography depends on 1. 2. 3. 4.

Size & shape X-ray Thickness of material All of the above are correct (*)

81. Memory of computer are 89. Calculate the reading 1. 2. 3. 4.

ROM, CPU, ALU ROM, RAM, PROM (*) ALC, ROM, RAM None of the above

1. 2. 3. 4.

0.2507 2.507 0.4250 1.200

82. Stress corrosion occurs mainly on 90 Identify: 1. 2. 3. 4.

Magnesium alloys Aluminium alloys Stainless steel Both 2 & 3 are correct (*)

1. A & D are variable resistors & b & C are fixed resistors 2. A & C are fixed resistors & b & c are variable resistors 3. A & B are fixed resistors & b & d are variable resistors 4. None of the above

83. Purpose of using flux in welding in 1. To reduce oxidation

CORRECT ANSWER IS MARKED * AT END

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 3. Neutral flame (*) 4. Reducing flame but first the flame is neutral & then reduced

91. Identify: 1. 2. 3. 4.

Potentiometer Resistor Auto transformer Iron transformer

99. Brass & bronze are welded with 1. 2. 3. 4.

92. In fluorescent dye penetrant test, the color of the light under which the part is inspected 1. 2. 3. 4.

Green colour in black light Green color in white light Ultra violet shining light (*) Red color in white light

100.This tool is used for 1. 2. 3. 4.

93. Rockwell tester measures 1. 2. 3. 4.

Resistance to penetration (*) Diameter of impression Size of indentation None of the above

For internal measurements Measuring hole diameter Outside measurements Both 1 & 2 are correct

101.In a 4 stroke engine the spark plug fires for every 1. 2. 3. 4.

94. Cleaning of titanium surface 1. Steel, steel wool 2. Iron scrapers 3. Mild abrasive or hand polish with aluminium (*) 4. None of the above

4 revolutions of crank shaft 2 revolutions of crank shaft (*) ½ revolution of crank shaft 360 degree revolution of crank shaft

102.If a wire having a resistance of 4 Ω is stretched twice of its length given its

1. 2. 3. 4.

95. PN junction is used as 1. 2. 3. 4.

Oxidizing flame (*) Reducing Neutral flame Reducing flame but first the flame is neutral & then reduced

Rectifier (*) Amplifier Oscillator None of the above

1Ω 8 Ω (*) 16 Ω 4Ω

103.7 resistors of 20 Ω are connected parallel & battery voltage is 2 volt the ammeter reads

96. NPN transistor 1. 2. 3. 4.

1. Flow of electrons from emitter to collector (*) 2. Holes move from collector to emitter 3. Flow of electrons from base to emitter 4. Flow of electrons from emitter to base

1/10 A 3/10 A 4/10 A 7/10 A (*)

104.Identification of titanium

97. In triode, grid

1. 2. 3. 4.

1. Controls the flow from plate to cathode (*) 2. Reduces space charge 3. It increases emission of electrons from cathode 4. Prevents secondary emission

Spark test Moistering & marking on glass Acid test Both 1 & 2 are correct (*)

105.Inhealed metal is Annealed 1. 2. 3. 4.

98. Aluminium alloys are welded with 1. Oxidizing flame 2. Reducing flame

115

Is soft Relieved internal stress Low strength All of the above is correct (*)

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 106.Reading of inside micrometer 1. 2. 3. 4.

3. Both will increases 4. Both will decreases (*)

0.527 0.425 0.475 2.015

113.The rivet head indicates the material

107.Identical insulated wire coils are hung from air so that they are racing each other & supplied with same direction A.C. 1. 2. 3. 4.

Anti clockwise rotation Both are repelled Both are attracted to each other (*) Clockwise rotation

108.Which of the following has negative coefficient of resistance 1. 2. 3. 4.

Thermistor (*) Transistor Semiconductor Resistor

Stress corrosion Fretting corrosion (*) Crevice corrosion Inter granular corrosion

Strain hardened Annealed (*) Solution heat treated None of the above is correct

112.When an aircraft catches fire, (made of aluminium) conductivity & resistivity of aluminium respectively

in

1. A new operating system 2. Operating system other than MS-DOS (Microsoft Disk Operating System) 3. PC – AT computer may have "Unix" operating system in addition of MSDOS. 4. None of the above is correct

1. 2. 3. 4.

Micro computer First generation computer Super computer (*) None of the above is correct

1. 2. 3. 4.

Fabric (*) Matrix Resin None of the above

117.The size range of an allen wrench is 1. 2. 3. 4.

3/64 to ½" 1/64 to ½" 3/64 to 1/8" 1/64 to 1/8"

1. 2. 3. 4.

100 83.3 (*) 0.80 115.6

119.Carbon steel is 1. Increases decreases 2. Decreases increases

CORRECT ANSWER IS MARKED * AT END

used

118.The function nut on an a/c landing gear requires a torque of 100 inch pounds. To reach the nut, a 3" straight adapter must be used on an 15" torque wrench. How many inch pound will be indicated on the torque wrench when the required torque of the nut is reached?

111.The letter : 0 in heat treatment process represents the following condition 1. 2. 3. 4.

114.The abbreviation "Unix" computer indicates:

116.Which is principal load carrying member in composite materials

Greater allowance on the formal head Snap not regular to the head Bucking bar not in position None of the aboe is correct

110.The type of corrosion which occurs when two making surfaces, normally at rest with respect to one another, are subject slight relative motion is know as? 1. 2. 3. 4.

2024 21171 Monel (Nickel copper alloy) None of the above is correct

115.The most sophisticated computer is

109.In a given figure, what may be the cause of fault for the installation of rivet 1. 2. 3. 4.

1. 2. 3. 4.

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 1. Strongly magnetic & shows slow chemical reaction with nitric acid test 2. Non magnetic & non action with HN 3. Strongly magnetic & rapid action with HNO3 test 4. Slightly magnetic & slow chemical reaction with HNO3 test

125.During welding, the welding torch should be kept 1. Into the molten metal 2. Above the colten metal 3. Depending on welding processes (*) 4. All the above is correct

120.In a vernier micrometer, 9 part of main scale is divided into 10 parts of vernier scale, the main scale has graduation of 1 mm. Find the least count 1. 2. 3. 4.

0.01 cm (*) 0.001 cm 0.001 mm 0.009 mm

1. Attractive if the direction of the current flowing through wires is same 2. Attractive if the direction of current will opposite 3. Repulsive if direction of current will be reverse 4. Both 1 & 3 are correct (*)

Using scrapper Sand blasting (*) Dipping in any solvent All of the above

127.The symbol represents 1. SCR, rehostat respectively 2. Rehostat, thyristor respectively 3. Resistor, FET (field effect transistor) respectively 4. None of the above is correct

122.What is the difference between quantity & quality of x-ray in radiographic inspection: 1. 2. 3.

4.

Three is no meaning of quantity & quality means the penetrating power of a beam of radiation (*) Quantity is related with penetrating power of x-ray & quality is related with frequency of x-ray The quantity refers to the amount of radiation penetrating the specimen which affects the darkness of a radiograph & quality refers to the penetrating power of a beam None of the above is correct

128.In which condition the bridge is said to be balanced

1. R1 is increased, R2 is decreased 2. R3 is increased, R4 is decreased 3. R2 is increased, R3 is decreased 129.Which one of the following statement is true? 1.

123.Artificially aged & then cold worked is represented by

In Ni-cd battery, charging & discharging can be done rapidly due to low internal resistance. (*)

130.In case of a battery, which of the following quantity can be stored

1. T1 2. T7 3. T10 (*)

1. 2. 3. 4.

4. None of the above is correct 124.Which of the following is used as filler material 1. 2. 3. 4.

&

126.Two wires each 1 meter long are kept at a distance of 0.02 mt apart if 1 amp current is flowing through each wire, then force acting on the wire will be

121.The scales on the surface of a heat treatment part is removed by 1. 2. 3. 4.

position

Energy (*) Charge Curr3ent None of the above is correct

131.In a dry cell battery

Flox Chopped fibers Both 1 & 2 (*) None of the above is correct

1. Carbon electrode is placed centrally surrounded by aluminium chloride electrolyte (*)

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. Zinc chloride is placed centrally surrounded by aluminium chloride electrolyte 3. Carbon electrode is placed centrally surrounded by zinc chloride electrolyte 4. Both 1 & 3 are correct

3. The avdel rivets must be washed in solvent before use 4. 1 & 2 are correct (*) 138.CPU contains

132.The identical insulated wire coils are hung from air so that they are facing each other & supplied with same direction.

1. 2. 3. 4.

I/P & O/P Unit Memory Unit ALU & CU (*) All above

139.The speed of computer is in 1. 2. 3. 4.

Both are attracted to each other (*) Both are repelled Clockwise rotation Anti clockwise rotation

1. 2. 3. 4.

Milliseconds Micro second Second None of the above is correct (*)

133.Hot water quenching 140.Algorithm has the following properties 1. Minimizes distortion & ________ cracking (*) 2. Ensures maximum resistance to corrosion 3. Minimizes distortion but results in cracking 4. 1 & 2 are correct

1. Definiteness & finiteness 2. May not be finite 3. None (*) 141.The computer executes 1. 2. 3. 4.

134.Spherical roller bearing take 1. Take only radial loads 2. Take only axial loads 3. Accept a minor degree of misalignment between opposite bearing 4. None of the above is correct (*)

One information at a time (*) Two information at a time Millions of information at a time None of the above is correct

142.Crevice corrosion

135.Screw differ from bolt is their threads a fit also 1. A/c bolts have generally class 3 fit & screw class 2 fit (*) 2. A/c bolts have generally class 1 fit 3. A/c bolts have generally class fir & screw class 3 fit 4. A/c screw & bolts have class 4 fit only

1. Is an electrochemical attack 2. Takes place when metals are in close contact with plastic (*) 3. Both 1 & 2 true 4. None of the above is correct 143.Main constituent of stainless steel is 1. 2. 3. 4.

Cr (*) Ni Carbon None of the above is correct

136.Drill machine can do operations of 1. 2. 3. 4.

144.Which statement is true regarding carbon & Kevlar fibres

Drilling (*) Counter sinking Lapping All the above is correct

137.Which statement rivet is correct

concerning

1. avdel 2.

1. Avdel rivet is supplied in pre-lubricated condition 2. The avdel rivet is coded by length & diameter

CORRECT ANSWER IS MARKED * AT END

3. 4.

116

Kalvar is a type of Aramid fiber, usually, of yellow color, having excellent tensile strength & remarkable flexibility but difficult to cut & drill Carbon fiber is a black fiber, very strong & still. It is stronger than Kevlar in compression but more brittle Both 1 & 2 are true (*) None of the above is true

REVISED OBJECTIVE QUESTIONS & ANSWERS 145.For checking zero error in micrometer having arrange of 0 – 1"

a

3. High carbon steel 153.For filling slots & key way use

1. A cylinder of 1" dia should be kept between the faces of anvil & spindle 2. The faces of anvil & spindle will be brought in close contact (*) 3. Zero mark on the thimble is exactly inline with the datum line on it sleeve 4. The frame must be held with left hand & thimble rotated with right hand.

1. 2. 3. 4. 154. 1. 2. 3. 4.

146.A ratchet mechanism is incorporated in micrometer to 1. To apply correct pr. 2. To prevent damage to the instrument 3. To have pre-set feel to prevent over torque (*) 4. To reduce wear on the measuring faces

155.

156.

1. Measures very accurately with LC of 0.001" 2. Measures very accurately with LC of 0.002" 3. Is used for all types of Measurement 4. None of the above is correct (*)

1. 2. 3. 4.

148.Hawks bill ship are used to

157.

Cut inside of curves / radii (*) Cut outside of curves Cut heavy sheet metal All of the above is correct

1. 2. 3. 4.

149.Included angle of BA thread id 1. 2. 3. 4.

Convert into decimal 10111011101 1501 (*) 1500 1401 None of the above is correct Rheostat has

1. 3 terminals 2. 2 terminals (*)

147.Three point micrometer

1. 2. 3. 4.

Kniffile Square file 3 – square file Half round file

35 degrees 47.5 degrees (*) 33 degrees None of the above is correct

158. 1. 2. 3. 4.

150.Be laminations in composite in a coin test gives

159. 1. Dull sound (*) 2. Perfect solid sound

1. 2. 3. 4.

151.Tappered 1 roller bearings take 1. Axial & radial load in one direction (*) 2. Axial load only 3. Axial & radial load in either direction

160.

In optical instrument used to inspect the interior structure of the components Fibroscope Boroscope Indoscope All of the above is correct (*) If the driven gear teeth ratio is 21:40 what will be the teeth of the driven gear 30:50 30:35 40:55 63:120 Universal gate is AND & OR gate OR & NOR gate NOR & NAND gate (*) NAND gate Which statement is incorrect X-ray's reflected (*) It destroys living cells It produces heat None of the above is correct LED concerns about

1. Crystals 2. Reverse Bias 3. Morelight ommited as temperature increases 4. Combination of holes & current (*)

152.Spherodise annealing is applicable to 1. Low carbon steel (*) 2. Medium & low carbon steel

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 161. 1. 2. 3. 4. 162.

2. Bucking bar on the rivet 3. Dimpling the rivet 4. None of the above is correct

Which is not usually done composite Dyepenetant (*) X-ray Ultra sound method Radiography

5. For threading a hole, the hole should be drilled 1. Approximately 0.003" to 0.007" undersize (*) 2. Approximately 0.003" to 0.007" oversize 3. 0.007 undersize 4. None of the above is correct

The grip length of all line fasteners is given in

1. 1/100" (*) 2. 1/1000"

6. Secondary cell stores 163.

Meuntz metal is a 1. 2. 3. 4.

1. Brass & is resistant to salt water (*) 2. Is a bronze 164. 1. 2. 3. 4. 165.

Which is correct 7. In a scale 39 division of main scale concides with 10 division of vernier & 1 division of main scale indicate 1 mm. 1 division of vernier scale indicates

A driven, clockwise B driver, clockwise (*) C driven, clockwise D driven, clockwise In the absence (substitute) of Baron which composite hybrid may be used

1. Aramid + Carbon / Graphite (*)

1. The tool shown in figure is Box – end wrench Double end offset wrench Flare nut wrench Combination wrench

1. 2. 3. 4.

2. Identify the following 1. 2. 3. 4.

Rheastal & sc diode Resistance & photo diode Rheastal & SCR None of the above is correct

1. 2. 3. 4.

Collect Tap Die Chuck

0.004 cm 0.001 mm 0.01 mm 0.01 cm

To remove the cutting chips of metal force is applied on file is forward direction for cutting For saving the life of file More metal to be cut None of the above is correct (*)

10. Ceramic fibres are often used with 1. 2. 3. 4.

4. The figure shows process of 1. Riveting with the riveting gun on rivet head

CORRECT ANSWER IS MARKED * AT END

0.01 cm 0.01 mm 1 mm 0.001 cm

9. Force to be applied on file is backward direction

3. The figure shows 1. 2. 3. 4.

1. 2. 3. 4.

8. In a scale 24 main division is concide with 25 division of vernier scale & 1 division of main scale indicate 1 mm then 9 division of vernier scale indicates

Paper II (February – 1998)

1. 2. 3. 4.

Capacity Energy (*) Power Work

116

Modified polyester resin Exoxy resin Metal metrix (*) None of the above is correct

REVISED OBJECTIVE QUESTIONS & ANSWERS 11. In nitric acid test, the material shows rapid action with greenish blue color, the material is 1. 2. 3. 4.

CRS Carbon steel Nickel (*) All of the above is correct

12. Highest compressive composite is 1. 2. 3. 4.

2. Decrease 3. Infinite 4. Same 19. If the plate is more +ve w.r.t. cathode, the electrons

strength

1. Will start to flow toward plate (*) 2. Will not start to flow toward plate 3. Will start to flow toward plate but will damage diode none 4. None of the above is correct

of

Carbon / Graphite (*) Ceramic Baron Both 1 & 2 are correct

20. Which of the NDT testing method is suitable for the inspection of most metal, plastic & ceramic surface defects

13. Which NDT cannot be used to test a 0.5 mm Al-steel 1. 2. 3. 4.

1. 2. 3. 4.

Magnetic particle inspection (*) Eddy current test X-ray None of the above is correct

21. How many of these factors are considered essential of knowledge for x-ray exposure

14. In a transformer the primary has 200 turns & the secondary has 400 turns. If the supply of 28 v is given in primary then the secondary voltage is 1. 2. 3. 4.

1. 2. 3. 4.

70 v 110 v 56 v(*) 24 v

Measure inside diameter Measure outside diameter Measure distance between two surface All of the above is correct (*)

1. 45° 2. Longitudinal 3. Transverse 4. Sub-surface

16. The flow chart symbol indicates 1. 2. 3. 4.

23. Alclad is metal consists of

Activity Input Output Both 2 & 3 are correct

1. Al-alloy surface & pure Al-core 2. Pure Al-surface & Al-alloy core (*) 3. A homogenous mixture of pure N & Nalloy 4. All are correct (Multiple layer of Al-alloy & pure n)

17. "O" or "A" indicates 1. 2. 3. 4.

Anhealed recrystallized (*) Quenched Forged Both 1 & 2 are correct

18. With increase resistance of cu

in

Processing of film Material thickness & density Exposure distance Film characteristics (*)

22. Which type of crack can be detected by magnetic particle inspection using either circular or longitudinal magnetization

15. Calipers are used for the purpose of 1. 2. 3. 4.

Eddy current Magnetic particle inspection Ultrasonic test (*) Dye penetrant method

24. A fibre type self locking nut must not be used on a/c if bolt is 1. 2. 3. 4.

temperature,

Under shear load Under tensile load Subjected to rotation (*) Subjected to vibration

1. Increase (*)

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 25. A triode consists of 1. 2. 3. 4.

4. None of the above is correct

Plate, gird & a heater Plate, cathode & heater Cathode & a plate Plate, cathode, heater & a screen between the plate & cathode (*)

32. Flexible hose used in a/c plumbing is classified in size according to 1. 2. 3. 4.

26. Diode, triode & transistors 1. 2. 3. 4.

Obeys ohm's law Does not obey ohm's law Not a linear resistance Both 2 & 3 are correct (*)

33. Which tubing has the characteristics – (high strength & abbrassive strength) for use un a high pressure (32,000 psi) hydraulic sysem of operation of landing gear & flap

27. Fibre glass sheet is used between Al & carbon / graphite joint to 1. 2. 3. 4.

Outside diameter Class sectional area Inside diameter (*) All are correct

1. 2. 3. 4.

Protect it from corrosion (*) Used as core metal Provide better strength All are correct

2024 – T 5052 – O Al-alloy CRS (*) 1100 – ½ or 3003 – ½ H, Al-alloy

34. The setting in the micrometer indicates

28. Mark the correct statement 1. The diametrical pitch & pitch diameter in a spur gear are same 2. If the diametrical pitch (DP) is given, you can find out the addendum (*) 3. If we divide DP by PD, we can get size of teeth 4. If the DP is given, you can fin out the addendum

1. 2. 3. 4.

From rotary to reciprocating From reciprocating to rotary Rotary to linear (*) All the above is correct

35. When a gear sector is engaged with a rack the motion will be 1. Intermittent rotary 2. Reciprocatry 3. Intermittent straight line (*)

29. The useful load of an a/c is the 36. Aviation ship is used for cutting 1. Difference between maximum gross weight & empty weight (*) 2. Difference between the net weight & total weight 3. Sum of the empty weight & maximum gross weight 4. None of the above is correct

1. Thick metal sheet 2. Heat treated Al. alloy & stainless steel (*) 3. Only stainless steel 4. Any sheet metal 37. Headless grab screws is installed by

30. What is the color of AN-steel flared tube filling is 1. 2. 3. 4.

1. 2. 3. 4.

Black (*) Blue Green White

38. Milling machine is

31. What is the advantage of double flaring on Al-tubing

1. 2. 3. 4.

1. Easy of connection 2. It is less resistant to the shearing effect 3. It is more resistant to shearing effect of torque (*)

CORRECT ANSWER IS MARKED * AT END

Allen key (*) Special ratchet spanner Suitable screw driver Special tool

116

Used for surface finishing Used for sawing the metal Used for grinding the metal All of the above is correct (*)

REVISED OBJECTIVE QUESTIONS & ANSWERS 39. 25 division of vernier scale concides 24 cms of main scale & 1 cm in main scale is divide into 20 equal parts 1. 2. 3. 4.

1. 2. 3. 4.

0.01 cm (*) 0.05 cm 0.01 cm 0.1 cm

47. Altimeter consists of stack of 1. 2. 3. 4.

40. Considering all factors the most commonly used metal as electrical conductor in a/c is 1. 2. 3. 4.

Aluminium (*) Copper Silver Tungsten

1. Heating just above the critical point & cooling in air (*) 49. In British system of electromagnetic flow detection is indicated by

Low resistance coil in parallel with meter High resistance in parallel to meter Low resistance in series with meter High resistance in series with meter to increase range (*)

1. WFD 2. EFD 3. MFD (*) 50. Butyl rubber used for

42. As per ATA 100 code the size & type of electrical wire in aircraft are given 1. 2. 3. 4.

1. 2. 3. 4.

By prefix & suffixes Side by side At the beginning & at the end By letters & numbers (*)

1. Porosity (*) 2. Crater 3. Channeling

1. Used in transistors set 2. Transfer electrical energy from one circuit to another by changing frequency 3. Both 1 & 2 are correct (*)

52. Alclad is a 1. Aluminium alloy sandwiched between for aluminium coating (*)

44. Hydrogen evolves 1. Towards the end of the charging cycle of Ni-cd battery (*) 2. Throughout the servicing of lead acid battery 3. When the battery is over charged 4. All of the above is correct

1. 2. 3. 4.

of

Tyre & tube Seals & gasket (*) A/C Fuel tank lining None of the above is correct

51. Dump flux used while welding with oxyacetelene flame will cause

43. Transformer is a device

45. The strength depends on

3 evacuated capsule 2 evacuated capsule Barometric scale adjustment All are correct (*)

48. Normalizing of steel is done by heating

41. A galvanometer may be converted to a voltmeter by connecting 1. 2. 3. 4.

Positive error Negative error No error (*) All are false

an

53. Number of measured by 1. 2. 3. 4.

threads

per

inch

is

Steel rule Screw pitch gauge (*) Ring gauge All of the above is correct

electromagnet 54. Decimal 29 is equivalent to binary

Number of the turns of the coil Strength of rotation of the magnet Speed of rotation of the magnet (*) All of the above is correct

1. 2. 3. 4.

46. The setting in vernier caliper indicates

11101 (*) 101101 110101 101011

55. SCR has

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 1. 2. 3. 4.

1. 2 terminals 2. 3 terminals (*) 56. In pitot & static system static vents & pitot vents are placed at separated location to prevent

64. Bearing strength is 1. The strength that resists a force that tends to tear it apart (*)

1. Position error 2. Ice firmation 3. All of the above is correct (*) 57. Difference measured

of

both

pressure

65. In NDT X-ray equipment are graded according to the is 1. 2. 3. 4.

1. Altimeter 2. ASI (*) 58. The phenomenon which causes continuous spin of outer ring due to coincidence of rotor ring with outer gimble ring axis is called 1. 2. 3. 4.

Al clad Pureclad Pure clad & electro statically preventive All of the above (*)

66. To improve the tensile strength, ductility & shock resistance, magnesium alloy castings normally 1. 2. 3. 4.

Gyro wander Apparent precession Gyro tumbling Gimble lock (*)

Volt – range (*) Electromagnetic radiation Amp Penetrating power

Case hardened Solution heat treated (*) Precipitation heat treated Solution heat treated

67. Thermistor 59. For brazing the flame used 1. 2. 3. 4.

1. 2. 3. 4.

Oxitizing Carbonizing Neutral (*) Reducing

Zero temperature coefficient Variable temperature coefficient Positive temperature coefficient Negative temperature coefficient (*)

68. 7075 – 0 indicates 60. High carbon steel co9ntains carbon 1. Full annealed condition (*) 1. 2. 3. 4.

0.50% - 1.5% 0.30% - 1.50% 0.50% - 1.05% (*) 1.50% - 2.2%

69. Which of the following revet does not required heat treatment 1. 2. 3. 4.

61. Crack at the surface should be welded by 1. Butt welding (*) 2. Lap welding 3. Fillet welding

70. In oxyacetelene welding equipment oxygen & acetylene are identified by

62. In chalk test we used 1. 2. 3. 4.

1. 2. 3. 4.

Hot fluid Cold fluid Both are correct (*) None of the above is correct

Left & right hand thread Color & length of cylinder Diameter of the hose Both 1 & 2 are correct (*)

71. Cleaning of acrylic & rubber is done by

63. Al. alloy core with pure alluminium coating is knows as

CORRECT ANSWER IS MARKED * AT END

2017 – D 2117 (*) 2024 – DD 2117 – AD

1. MEK 2. Aliphatic naptha (*) 3. Aeromatic naptha

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 4. Acetone

3. Shank length of the revet

72. Elastomeric rubber is

81. In a revet layout the shank diameter should be

1. Rubber impregnated in metal 2. Shock absorber (*)

1. Twice the thickness of the thicker sheet 2. 1/8th thickness of the thicker sheet 3. Three times the thickness of the thickest sheet (*)

73. NDT of aluminium alloy is done by 1. 2. 3. 4.

Penetrant method Zyglo method X-ray method Ultrasonic method (*)

82. In a bolt & nut assembly after applying torque, cotter pin hole is not aligning the bolt my be

74. Heat treatment aluminium alloy is done by

1. Slightly tightened to next slot (*) 2. Slightly loosened to next slot

1. Heating KOH & NAOH (*) 2. Heating above critical point & cool in air

83. A/C chains are specified by 1. Load carrying capacity 2. Pitch & number of links 3. Both are the above is correct (*)

75. UFD indicates 1. Ultrasonic flow detection (*) 2. Radiography 3. Dye penetrant flow detection

84. Helicoil insert has a natch & tang along end to

76. Welding for stainless steel the flame used

1. Facilitate installation 2. The removal of tang after it has screwed into the trapped thread hole (*)

1. Carbursing 2. Neutralizing (*) 3. Dye penetrant flow detection

85. Unless specified the torque to be applied to a bolt & nut assembly should

77. Welding for stainless steel the flame used

1. Degreased dry & clean thread (*) 2. Lubricated thread

1. Carbursing 2. Neutralizing (*) 3. Caldizing

86. Raised double dash rivet is 1. 2117 rivet 2. 2024 rivet (*)

78. Carbon in iron at normal temperature remains as 1. 2. 3. 4.

87. Crinckle washer is used for

Ferrite (*) Dissolved iron matrix Austenite Special iron matrix

1. Hard steel to take food 2. Instrument mounting for loft load & electrical installation (*) 88. Cotterpin for castellated nut is made off

79. Baffles in hydraulic tank is given for 1. 2. 3. 4.

1. 2. 3. 4.

Providing an expansion tank is given for Resisting fuel surging within the tank (*) Providing internal structural integrity Preventing fuel overflow during refueling

Stainless steel Corrosion resistant steel Cadmium plated low carbon steel (*) Both 1 & 3 are correct

89. Circuit containing registor, capacitor, diode, seminconductor is a

80. In a blind revet the length between manufacture head to the end is

1. Linear circuit 2. Non linear circuit

1. Grip length (*) 2. Grip range

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 3. Bipolar circuit 4. Unipolar circuit

98. Every third tooth of the hackshaw is made straight

90. 1110101 is equivalent to 1. 2. 3. 4.

117 29 63 None of the above is correct

91. In lad acid battery occurs because of 1. 2. 3. 4.

1. To give clearance for the cutting 2. Repsaw tooth is provided 99. The vernier scale has 1. Positive error 2. Negative error

sedimentation 100.Least count is defined as

Overcharging Frequent charging & discharging Over discharging (*) High rate of discharge

1. One main scale division is divided into the total division of the vernier / thimble scale (*) 2. 1 MSD – 1 TSD

92. A circular mill is

101.Least count of 50 divisions on the circle of micrometer whose pitch is 1 mm

1. A circular whose diameter is 0.001" (*) 93. Vent plug of Ni-cd battery should be cleaned by 1. 2. 3. 4.

1. 2. 3. 4.

Distilled water only (*) Distilled water & detergent Hot water & distill water Detergent

102.Backslash of a micrometer is caused due to

94. Current is 2.5 amp, voltage 12 v, used for 1 minute. How much energy it will consume 1. 2. 3. 4.

1800 J (*) 2J 60 J 18 J

95. In British system of inverted triangle gives

0.01 mm 0.02 mm (*) 0.5 mm 0.0902 mm

1. 2. 3. 4.

Manufacturing defect Wear & tear Wear on the nut All of the above correct (*)

103.Snap gauge is a

drawing

1. 2. 3. 4.

the

1. Important dimensions 2. Heat treatment 3. Surface finish (*)

104.Aviation snip used for cutting 1. Stainless steel & aluminium alloy heat treated sheet (*) 2. Chromium sheet 3. Heavy sheet metal 4. Any sheet metal

96. Micron is 1. Millionth of meter (*) 2. Thousandth of meter 97. A hole to be reamed should be drilled to under

105.Gyroscope – the phenomenon which causes continious spin of outer ring due to coincidence of rotor ring with cuter gimble ring axis is called

1. 0.001" – 0.002" 2. 0.003" – 0.007" (*) 3. Same size

CORRECT ANSWER IS MARKED * AT END

Go & number go gauge (*) It will snap at preset torque load Gauge which measure TPI Gauge which measured outside diameter

1. Gyro wander 2. Gyro tambling 3. Apparent precession

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 4. Gimble lock (*)

3. Hard Disc 4. Micro processor chips

106.Rate of turn indicator 1. 2. 3. 4.

2. T6 designation of Al-alloy indicates

Rate gyro (*) Tied gyro Earth gyro Free gyro

1. Solution heat treated & then artificially aged (*) 2. Solution heat treated & then stabilized 3. Artificially aged only 4. Solution heat treated & then cold worked

107.Difference of pilot & static pressure is measured by

3. 0.10 mm is equivalent to

1. ASI (*) 2. Altimeter 3. VSI 108.Altimeter operation consists of a

1. 2. 3. 4.

mechanism

1. Two aneroid capsule 2. Three aneroid capsule 3. Adjustment for barometric provided 4. All of the above is correct (*)

4. The major alloying element in 7075 Alalloy is pressure

1. 2. 3. 4.

109.Free gyro has

indication

Magnesium Silicon Mg & Si Zinc (*)

5. The purpose of turnbuckle is to

1. The plane of freedom 2. The planes are right angle to each other & three plane (*) 110.Turn & slip respective by

0.039" 0.041" 0.035" 0.045"

1. 2. 3. 4.

operates

Make minor adjustment in cable length Adjust cable tension Both 1 & 2 are correct (*) None of the above is correct

6. A 7 × 19 cable is made up of

1. Gyro only (*) 2. External force & gravity 3. Gyro & gravity

1. 2. 3. 4.

111.Acceptable deviation in compass from the equipment

7 strands of 19 wire each (*) 19 strands of 7 wire each Both are correct None of the above is correct

7. For cast iron, the included angle of drill is

1. 1 degree from the needle to the compass 2. 2 degree from the needle to the compass (*) 3. 3 degree from the needle to the compass

1. 2. 3. 4.

112.Spherical roller bearing will take

118° (*) 70° 90° 140°

8. Select the correct sta5tement

1. Radial load heavy 2. Axial load slightly 3. Both the above are correct (*)

1. Hand taps are available in two sets 2. Bottoming tap is used to smoothen the bottom of a blind hole 3. Plug tap is used at the last 4. Taper tap is used first (*)

Paper – II (June – 1999) 1. The main memory of a computer is

9. The external threads on a bar is made by

1. RAM (*) 2. ROM

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 1. 2. 3. 4.

3. ¼ to ½ T 4. 1 1/3 T to 1 ½ T

Taps Stock Dies (*) Reamer

17. In a fillet weld, requirements are

10. The defect in wheel plus is inspected by 1. 2. 3. 4.

Dye penetrant process (*) Magnetic particle inspection Eddy current testing Ultrasonic testing

the

penetration

1. 60 to 80% of the thickness of the base metal 2. 100% of the thickness of the base metal 3. 200% of the thickness of the base metal 4. 25 to 50% of the thickness of the base metal (*) 18. In the fluerescent penetrant inspection,

11. The voltage rating of fully charged cell of 20 Ni-cd battery is 1. 2. 3. 4.

1. The defect will show the flow as a brilliant yellow green (*) 2. The defect will show the flow as a light yellow green 3. The sound area will appear white (deep blue violet) 4. The diffect will show as deep blue violet

1.8 to 2.1 v 1.24 to 1.3 v 1.4 to 1.7 v 1.3 to 1.5 v (*)

12. If the temperature of a confined liquid is held constant & its pressure tripled, the volume will be

19. In jacking of aircraft 1. Main wheels are raised together (*) 2. Nose wheel is raised 6" above the ground 3. Nose wheel is raised for free movement of it 4. None of the above is correct

1. Triple 2. Be reduce to 1/3rd its original (*) 3. Remain the same 4. None of the above is correct 13. If the pitot head is blocked then which instrument is affect 1. 2. 3. 4.

20. Centre drill is used to 1. Make hole & reaming in one operation 2. Make hole & countersunk in one operation (*) 3. Make taper hole 4. All of the above

ASI (*) Altimeter Turn & bank indicator Slip indicator

14. Which statement is correct

21. Unless otherwise specified, torque value for tightening a/c nuts & bolts relate to

1. QNE setting gives height above sea level of the airport 2. QNH setting gives airfield elevation 3. QFE setting makes the altimeter read zero on landing at aerodrome (*) 4. All of the above is correct

1. 2. 3. 4.

15. A double flare should be used on 1. 2. 3. 4.

22. A fibre type, self locking nut must never be used on an a/c if the bolt is

Stainless steel Nickel steel Cast iron Al alloy only (*)

1. 2. 3. 4.

16. Bead width of bolt weld should be

Under shear loading Under tension loading Both tension & shear loading Subjected to rotation (*)

23. Aircraft bolts are usually manufactured with a

1. 2 to 3 T 2. 3 to 5 T

CORRECT ANSWER IS MARKED * AT END

Clean dry thread (*) Clean Lightly oiled thread Either 1 & 2 None of the above

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 4. All of the above is correct 1. 2. 3. 4.

Class 1 fit for the threads Class 2 fit for the threads Class 3 fit for the threads (*) Class 4 fit, for the threads

29. With an ohmmeter connected into the circuit as shown, what will ohmmeter read

24. Generally speaking, bolt grip length should be

1. 20 Ω 2. Infinite 3. 10 Ω 4. None of the above is correct

1. One & one half times the thickness of the material through which the extend 2. Equal to the thickness of the material through which they extend plus approximately one diameter 3. Equal to the thickness of the material through which they extend (*) 4. 2 times the diameter

30. How can the state of charge of a Ni-cd battery be determined 1. By measuring the specific gravity of the electrolyte 2. By measuring charge (*) 3. By the level of electrolyte 4. All of the above is correct

25. A particular component is attached to the a/c structure by the use of an a/c bolt & a castleted tension nut combination, if the cotter pin hole does not align with the recommended torque range, a acceptable practice is

31. Zero fuel weight is the 1. Dry weight plus the weight of full crew, pax & cargo 2. Basic operating weight without fuel 3. Maximum permissible weight of a loaded a/c including pax, crew, cargo without fuel (*) 4. Maximum weight of the a/c with crew, oil, pax, less fuel in wing tank

1. Exceed the torque range 2. Lubricate the threaded section of the nut, bolt & torque 3. Change washers & try again (*) 4. Change the nut 26. How is a clevis bolt used with a fork end cable terminal secured 1. 2. 3.

4.

32. The empty weight of an aircraft is determined by

With a shear nut lightened to a sung fit, but with no strain imposed on the fork & satefied with a cotter pin With a castle nut tightened until slight binding occure between the fork & the fitting to which it is being attached With a shear nut & cotter pin or a thin self locking nut tightened enough to prevent rotation of the bolt in the fork (*) All are correct

1. Adding the net weight of each weighing point & multiplying the measured distance to the datum 2. Subtracting the tare weight from the scale reading & adding the weight of each weighing point (*) 3. Multiplying the measured distance from each weighing point to the datum times the sum of scale reading less the tore weight. 33. Compound gear is used for

27. A bolt with an X (cross) inside a triangle on the head is classified as a 1. 2. 3. 4.

1. 2. 3. 4.

Standard a/c bolt Close tolerance bolt NAS (*) CRS bolt Special bolt

Better efficiency Better transmission of motion Greater range of speed All of the above is correct (*)

34. Mg-alloy used with other metal should be

28. Through which material will magnetic lines of force pass the most

1.

1. Copper 2. Iron (*) 3. Aluminium

115

Given two coasts of zinc chromate & a layer of pressure – sensitive _____ tape 0.003 in thick is applied smoothly &

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS

2. 3. 4.

firmly enough to prevent air bubbles & wrinkles (*) Given one coat of zinc chromate & a coat of pressed vinyl Given two coat of zinc chromate & two coat of pressed vinyl None of the above is correct

35. An automotive type flaring tool will produce a flare

41. Jet fuel identifiers are 1. Performance number to designate the volatility of the fuel 2. Performance number & are relative to the fuel performance in the a/c engine 3. Type number with no relation to the fuel is performance in the aircraft engine (*) 4. None of the above is correct 42. Brinell hardness testing is applicable to

1. 2. 3. 4.

37 degree 45 degree (*) 60 degree 30 degree

1. 2. 3. 4.

Small part & high hardness Large part & small hardness Small part & small hardness Large part & high hardness (*)

36. Color of AVGAS low lead fuel is 43. Which one id incorrect 1. 2. 3. 4.

Died blue (*) Color less Died green None of the above is correct

1. 2. 3. 4.

ATA – 62 communication ATA – 30 ice & rain protection ATA – 52 dcor ATA – 78 engine exhaust

37. With prepregs 1. 2. 3. 4.

38. The measurement reading illustrate micrometer is 1. 2. 3. 4.

44. What will be the speed of driven gear if driver gear is 120 rpm.

Manual application not required Has to be kept in freeze Both 1 & 2 are correct (*) None of the is correct on

1. 2. 3. 4.

the

45. In dye penetrant test, the vol, of defect can be interpreted by

0.2857" 0.2901" 0.2511" 0.2861"

1. 2. 3. 4.

39. A primary cause of inter granular corrosion is 1. 2. 3. 4.

Staining route Staining extent (*) Staining speed All of the above is correct

46. The test sample which can be tested by making both probe simultaneously in opposite direction to defect flames on surface

Improper heat treatment (*) Dissimilar metal contact Improper application of primary None of the above is correct

1. 2. 3. 4.

40. Galvanic corrosion is likely to be most rapid & sever when 1. The surface area of the cathodic metal is similar than surface area of anodic metal 2. The surface area of the anodic & cathodic metals are approximately the same 3. The surface area of the anodic metal is smaller than the surface area of the cathodic metal (*)

CORRECT ANSWER IS MARKED * AT END

60 rpm 120 rpm 100 rpm 240 rpm

116

Flash butt metal (*) Thin sheet metal Cast ingot None of the above is correct

47. During repair procedure of composite, part heat treatment is done for 1. 2. 3. 4.

Small disbond Seal be smallest Restore surface protection None of the above is correct (*)

REVISED OBJECTIVE QUESTIONS & ANSWERS 48. When grain size of the steel will be smallest 1. 2. 3. 4.

3. Turn buckle barrel ends (*) 4. Steel tubular members of basic structure

Heated first below critical range Heated just above critical range (*) Below lower critical range None of the above is correct

55. When welding a high carbon steel use a 1. 2. 3. 4.

49. If a body is given shape & lorituation is exposed to uniform flow of incompressible fluid, each component of the force which the fluid exerts the body can be expressed as product of 1. 2. 3. 4.

56. High carbon welded by

Area Dynamic pressure Reynolds no. All of the above is correct

1. 2. 3. 4.

50. PARAL KETONE is used for preventing corrosion of 1. 2. 3. 4.

can be

readily

Are welding procedure Oxidizing flame & high carbon rod Neutral flame & high carbon rod (*) Carbonising flame & low carbon rod

1. Strength of the compositor material 2. Strength of the material & composing with charge 3. Strength of reinforcing fibre 4. None of the above is correct

Mg alloy parts Welded steel structure Cables, ferros & non ferros (*) B&C

58. An flared tube fitting is made of 1. 2. 3. 4.

Radiography Ohmmeter Laser holography All of the above is correct (*)

Al (*) Cu base alloy Steel All of the above is correct

59. Correct statement regarding refueling is

52. What procedure is used to digtinguish heat treatable alloys from non heat treatable alloys

1. Earthing is not required 2. Disconnect the earthing line first before disconnecting the fuelling nozzle 3. If a/c is earthed, fuelling vehicle, doesn't require earthing 4. None of the above is correct (*)

1. 10% solution of caustic soda (*) 2. 5 % solution of muriatic acid 3. Rockwell test 4. 10% solution of H2Sc

60. Scales are removed stressed steel parts by

53. When welding various metals you may reduce the chances crack of during by 1. 2. 3. 4.

steel

57. N.W.V.

51. The process used for checking moisture extrapped in composite is 1. 2. 3. 4.

Low carbon rod High carbon rod (*) Rod of either low or high carbon content Rod of intermediate carbon content

1. 2. 3. 4.

Preheating (*) Anodizing Heat treating Clamping

from

lightly

Hard abrasive paper Buffing Wheel (*) Wire brush None of the above is correct

54. Which of the follow of a/c parts or units should not be welded

61. If you have some 178 rivet, above 3/16" in diameter that had been aged for the hours after quenching

1. Items which are not responsive to heat treatment 2. Plain carbon, Ni-steel of SAE 2300 series

1. You could use them frouding they have not exceeded 5 hours of ageing

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. You could not use them because 178 rivets should be used within 10 minutes after quenching 3. You could use them provided they had not exceeds 3 hours of ageing 62. Flux from ferrous removed by using

metals

can

68. When flaring Al-tubing for used with AN coupling nuts & sleeves, the flat angle should be

1. 2. 3. 4.

be

1. 25% sol of silver nitrate 2. No need of flux by welding ferrous metals 3. You have to remove flux from ferrous metals (*) 4. A wire brush

69. The dia of flexible hose for a/d plumbing is classified in size according 1. 2. 3. 4.

63. A flux for silver soldering is obtained by using

2. Nitric acid 3. Muriatic acid 4. None of the above is correct

1. 2. 3. 4.

64. Welding of a/c from welding of steel differs in that 1. It is considered harder to weld because of high temp. 2. Steel does not have a color change that is apparent in Al 3. M.P. of Al is much lower than steel & the expansion is nearly three times as great (*) 4. It is much easier to weld because a flux is used 65. Wrought iron is identified by Red colored spark Straw yellow spark (*) White spark None of the above is correct

1/16 to 6" 5/18 to 6" 5/8 to 6" ½ to 6" (*)

67. Line used to show an edge which is not visible is a 1. 2. 3. 4.

71. Pulleys are normally made of 1. 2. 3. 4.

Asbestos Pnenolic formaldehyde (*) Mica Both 1 & 2 are correct

72. Function of turnbuckle is to 1. 2. 3. 4.

Adjust the cable tension Adjust the minor length of cable Both 1 & 2 are correct (*) As in a, & for frequently connecting & disconnecting the cable

1. The weld should be taper off smoothly into the base metal 2. The depth of penetration should be different to ensure fusion of the filler rod. 3. The height of the weld should be 1/8 inch above the base metal 4. The ripples should be even & well feathers into the ________ metal which shows no burn due to overheating (*) 74. Mark the correct statement

Break line Hidden line (*) Imaginary line Phantom line

CORRECT ANSWER IS MARKED * AT END

Tap Threaded spanner Die (*) None above is correct

73. Mark the correct statement

66. Which gage of telescoping gauge is identified by its 1. 2. 3. 4.

Cross sectional area Inside dia (*) Outside dia Both 1 & 2 are correct

70. Make an external thread which tool is used

1. Zn Cl2 (*)

1. 2. 3. 4.

67° 45° 37° (*) 60°

1. Fibre lock nut should not be used on the place where vibration is more

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 1. 2. 3. 4.

2. Fibre lock nut should not be used on the place where temp is above 250° F (*) 3. Fiber lock nut should not be used on the place where there is relative motion between parts 4. Both 2 & 3 are correct

82. Monel is the alloy of 1. 2. 3. 4.

75. Al clad is 1. 2. 3. 4.

Coating of Al alloy on the pure Al Coating of pure Al on the Al-alloy (*) Coating of pure Al on non-metal None of the above is correct

1. It is easily tightened by fingers (*) 2. Its locking property decreases 3. Its inside dia equal to outside dia of the corresponding bolt threads 4. All above is correct

Percentage of alloying element Percentage of carbon content (*) Number of carbon molecules Both 2 & 3 are correct

77. Parts should welding

be

normalized

84. The length of file is measured from after

1. 2. 3. 4.

1. To relieve internal stresses (*) 2. To remove the surface scale formed during welding 3. To introduce slight amount of carbon to improve the surface harness of the weld 4. To make improve mechanical property of the metal

Tang to tip Heel to tip (*) Tip to secreted portion None of the above is correct

85. Water in the honey comb structure may be detected by 1. 2. 3. 4.

78. Match the following GEAR BEARING HARNESS TESTER 1. Bowel Needle Spark 2. Ball Rockwell Idler 3. Idler Ball Rockwell (*) 4. Needle Bowel Ball

Floor ascent inspection method Ultrasonic inspection method Radiographic inspection method (*) Eddy current inspection method

86. To transmit the rotating motion between the shaft & wheel & to allow parallel movement of the wheel at the same time, the type of key is used. 1. 2. 3. 4.

79. The bolts are manufactured in 1. 2. 3. 4.

Cu-steel Ni-steel (*) Inconel Chromel

83. Self locking nuts should be replaced when

76. In SAE 2040, the last two digits indicates 1. 2. 3. 4.

White color Greenish color (*) Blue color Redish color

Class 2 fit Class 1 fit Class 3 fit (*) There is no fit for a/c bolts

Woodruff key (*) Flat saddle key Feather key Hollow key

87. The size of drill is indicated by 1. 2. 3. 4.

80. Purpose of tempering is to 1. Reduce the softness 2. Reduce the brittleness due to hardening (*) 3. Improve the softness / toughness 4. Both 2 & 3 are correct

Letter 'A' to indicated smallest size Letter 'Z' to indicated longest size Letter 'z' to indicated smallest size Both 1 & 2 are correct (*)

88. Purpose of heat treatment is 1. To improve electrical & mechanical property 2. To relieve internal stresses 3. To make material harder & stronger 4. All of the above is correct (*)

81. Corrosion on copper in indicated by

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 89. To carry the petroleum & synthetic fluid which hose material is used 1. 2. 3. 4.

1. In pulse transmission there is only one peak 2. As in (1) & if there is only one peak 3. In pulse transmission there is two peak 4. As in (3) & if there is another peak between transverse & bottom it indicate flaw (*)

Teflon (*) Butyl Buna – N Synthetic

90. The value of induced emf depends on 1. The speed of rotation 2. The length of the magnetic field 3. The number of wires moving through the magnetic field (*) 4. All above is correct

97. To case of chromium plating current density should be 1. 2. 3. 4.

91. In case multimeter 1. Red lead indicating negative terminal 2. Red lead indicating positive terminal 3. Black lead indicating negative terminal (*) 4. Black lead indicating positive terminal

1. 2. 3. 4.

1. A fuse is a strip of metal that melts when excessive current flow through it 2. A circuit breaker is device that stop current flow when it exceeds a predetermined value 3. Both 1 & 2 are correct (*) 4. A.C.B. is devised that melts when excessive current flow through it. 93. The specific gravity of electrolyte in incase of Ni-cd battery is Between 1.240 to 1.300 (*) Between 1.225 to 1.275 Between 1.225 to 1.300 None of the above is correct

Constant current method Constant voltage method Both 1 & 2 are correct (*) None above is correct

Large parts Small parts Almost al-alloy As in 1 & 3 & minimizes distortion & alleviates quench cracking

CORRECT ANSWER IS MARKED * AT END

Sheradizing Granodizing Anodizing Colorizing (*)

1. O2 & acetylene comes at the same pressure

2. O2 & acetylene comes at the different pressure 3. As in (1) & have equal size (*) 4. None of the above is correct 100.Radiographic inspection are used to defect Internal & external crack Porosity Water in the honey comb core All of the above is correct (*)

101.In flexible back blade

95. Spray quenching is normally carried on 1. 2. 3. 4.

Between 150 – 200 amp, per sq. ft Between 150 – 200 amp, per sq. ft Between 100 – 250 amp, per sq. ft Between 100 – 200 amp, per sq. ft

99. In balanced pressure type torch

1. 2. 3. 4.

94. Battery can be charged by 1. 2. 3. 4.

the

98. Coating of aluminium metal in powder process is called

92. Mark the correct statement

1. 2. 3. 4.

96. In case of ultrasonic transmission method, which statement is correct

116

1. Only the part where the teeth are cut is hardened 2. Only the end position where holes are drilled is hardened 3. As in (1) & rest of the blade remaining soft (*) 4. Both 1 & 2 are correct 102.Half round file is suitable for filing 1. Irregular shape 2. Large internal radius 3. Both 1 & 2 are correct (*)

REVISED OBJECTIVE QUESTIONS & ANSWERS

103.Which type of punch should be used to take out rivets, split pins, shack 1. 2. 3. 4.

1. 2. 3. 4.

Drift punch Pin punch (*) Center punch Prick punch

110.Color of dye used in pendants dye process is

104.Minimum number of gear required to make a compound gear train is 1. 2. 3. 4.

Oxygen Indicating & recording Landing gear (*) Light

3 2 4 (*) More than 2

1. 2. 3. 4.

Brown Red (*) White None of the above is correct

September 1993 1. Knurling is the

105.Which statement is correct for stub tooth

1. Rolling depression on the soft material 2. Rolling depression on any kind of material 3. As in (2) & is used to provide proper grip (*) 4. None of the above is correct

1. Stud tooth is thicker in proportion to its length 2. It is used where more strength is required 3. Its operation is not as smooth as involutes tooth 4. All above is correct (*)

2. To make stretch in the direction of its width

106.The transmit reciprocating motion into rotary motion, which type of gear normally used 1. 2. 3. 4.

1. 2. 3. 4.

Rack & sector Sector & gear Rack & pinion (*) Not possible with gear

3. Protective jaw caps are used with vice 1. To protect the vice jaw 2. To protect the parts from becoming damage (*) 3. To apply constant & even pressure on the parts 4. All of the above is correct

107.Which statement is correct regarding shrink rule 1. It has number 4 graduation 2. The inch marking on the faces are slightly longer than actual inches 3. It is made from 1/10 to 7/16 inch per ft over size 4. All the above is correct (*)

4. To make a V-shaped groove the chisel commonly used is 1. 2. 3. 4.

108.In order to locate a defect in a part which condition is necessary 1. Magnetic lines of forces must pass parallel to the defect 2. Magnetic lines of forces must pass perpendicular to the defect (*) 3. Induced magnetic flux in more than one direction 4. Both 2 & 3 are correct 109.ATA 100 indicates

specification

Use straight peen hammer (*) Use cross peen hammer Any kind of hammer can be used Use ball peen hammer & apply blow with an angle

system,

Round nose chisel Flat chisel Cap chisel Diamond point chisel

5. To locate the center on a round block use 1. 2. 3. 4.

Surface gauge Center square head (*) Hermophrodite caliper All of the above is correct

32 6. Which cutting fluid is used on tool steel

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 1. 2. 3. 4.

1. A suspended magnet always assume a north & south position (*) 2. Inductors when connected in parallel the total inductance is the south their values 3. Inductive reactance is inversely proportional to inductance & frequency 4. All of the above is correct

Mineral land oil Soluble oil & (1) is correct Sulfurized oil All above is correct (*)

7. Mark the correct statement 1. Linear sidewise motion is known as backlash 2. Reaming should be down after drilling 3. As diametral pith increases, size of tooth decreases, no. of teeth increases 4. All of the above is correct (*)

14. Which instrument is used for checking the insulation resistance 1. 2. 3. 4.

Ohm meter Megger (*) As in (1) & maghometer All of the above is correct

8. Mark the correct statement 15. 'D' Arsonavel ammeter is used 1. 2. 3. 4.

Coating of pure Al & Al-alloy is called Titanium has low strength to weight ratio Brass & bronze comes under copper Both 1 & 3 are correct

1. 2. 3. 4.

9. Which instrument is used for measuring the roughness of surface 1. 2. 3. 4.

16. Mark the correct statement

Surface gauge Surface plate with v-block (*) Profilometer Pyrometer

10. Conductor having length of 2 ft & resistance 2 ohms, now if we reduce its length just half of original, then resistance will be 1. 2. 3. 4.

Just double Just half (*) Just equal None of the above is correct

Altometer VSI ASI (*) Both 1 & 3 are wrong

18. The size of the determined by its

flexible

hose

Outside dia Inside dia (*) Number of piles to makes hose Cross section area

19. Mark the correct statement

Number of gears & sectors Number of gears & pinion Number of capsules (*) Both 1 & 3 are correct

1. Dia of bolt in 1/16th & length in 1/8th (*) 2. Dia of bolt in 1/8th & length in 1/16th 3. Dia of rivet in 1/16th & length in 1/32 th 4. Both 1 & 3 are correct

13. Mark the correct statement

CORRECT ANSWER IS MARKED * AT END

17. In triode tube

1. 2. 3. 4.

12. The sensitively of altimeter is increased by increasing 1. 2. 3. 4.

1. Specific gravity reading between 1.300 to 1.275 indicates a high of charge 2. Specific gravity reading between 1.275 to 1.240 indicates a high of charge 3. Specific gravity reading between 1.240 to 1.225 indicates a medium charge 4. Both 1 & 3 are correct (*)

1. Srid is placed between plate & cathode (*) 2. Plate is placed between grid & cathode 3. Cathode is placed between grid & plate 4. None of above is correct

11. Which instrument is utilizing both dynamic & static air for its operation 1. 2. 3. 4.

For measuring ammeter AC current For measuring DC current (*) For measuring AC voltage For measuring DC voltage

20. To prevent sparking

116

is

REVISED OBJECTIVE QUESTIONS & ANSWERS 1. Connect the condenser in series with the part 2. Connect the condenser in parallel with the part (*) 3. Connect the condenser in any desire position 4. Both 2 & 3 are wrong

27. A/C cables are normally made of 1. 2. 3. 4.

Carbon steel CRS Galvanized steel Both 1 & 2 are correct (*)

28. Mark the correct statement 21. When capacitor is connected in parallel, which formula is used determining the total capacitance

1. Hermaphrodite caliper is used as a marking gauge in layout work 2. In commercial normalizing quenching is normally carried out in air 3. The color of spark in gray cast iron is red at the point of contact 4. All above is correct (*)

1. 1/C = 1/C1 + 1/C2 + 1/C3 2. C = C1 = C2 + C3 (*) 3. C = 1 / (C1 + C2 + C3) × C1 + C2 + C3 4. None of the above is correct

29. The given figure indicates

22. Piezoelectric effect is found on 1. 2. 3. 4.

1. 2. 3. 4.

Rochelle salt Phenolic material Quanty & rochelle salt Both 1 & 3 are correct (*)

30. In heat treatment of material T8

23. Which is the correct statement

indicating

1. Gasket are always used with backup ring 2. Gasket are stationery seals 3. Gasket can be used as an oil seal 4. Both 2 & 3 are correct (*)

1. Solution heat treatment & then stabilized 2. Solution heat treated & artificially edged & then cold worked 3. Solution heat treated & cold worked & then artificially edged (*) 4. Solution heat treated, & then artificially edged

24. A bolt having part number AW 3 DD 6A having following means

31. In Rockwell hardness tester there is two weight except weight pan of machine, one is red & other is black. Now choose correct answer

1. It indicates that bolt dia is 3/16", length 6/8" & material 2024 2. It indicates that bolt dia is 3/8", length 6/16" & material 2024 (*) 3. It indicates that bolt dia is 3/8", length 6/16" & material corrosion resistant steel 4. It indicates that bolt dia is 3/16", length 6/18" & material corrosion resistant steel

1. When there is no load machine applied a load of 60 kg 2. Where black wt. is on the pan, machine applied a load of 150 kg 3. As 1 & 2 & when red wt. is on the pan machine applies a load of 100 kg 4. As a, b, & c & black wt. is always used with red wt. (*)

25. AN 300- series is used for indicating 1. 2. 3. 4.

A/C screws A/C nuts (*) A/C washers A/C bolts

32. Titanium is heat treated for the purpose of

26. The length & dia of DZUS fastener is measured jin 1. 2. 3. 4.

NPN transistor PNP transistor As in (1) & arrow indicating emitter As in (2) & arrow indicating emitter

1. Thermal hardening to improve strength 2. Annealing after hot working or cold working 3. Relief of stresses setup during cold working 4. All above is correct (*)

Length 1/8" & dia 1/16 inch Length 1/16" & dia 1/8" inch Length 1/8" & dia 1/100 inch (*) Length 1/100" & dia 1/16" inch

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 33. Filler are added in resin to 1. 2. 3. 4.

40. Wing type bolts self locking nuts are made in range of

Increase strength As in 1 & 2, also control viscosity & wt Increase pot, life As in (2) also control viscosity & wt (*)

1. No. 6 upto ¼" 41. The material used for making the tap is

34. Mark the correct statement regarding composite material 1. Carbon / graphite is stronger compressive strength (*) 2. Color of kevler is brown 3. S-glass is borosilicate glass 4. All above is correct

1. 2. 3. 4.

in

42. The included angle of center punch is

1. 2. 3. 4.

35. Mark the wrong statement 1. Nomex is the widely used core material 2. Urothane can not be cut by hot wire cutter 3. Carbon is identified by its black color 4. Ciramic fibre are in not used with metal matrix (*)

1. In ATA 100 specification chapter 61 in indicating

1. Combined effect of tensile stress & lack of uniformity in alloy structure 2. Relative motion between two parts 3. Combined affect of tensile strength & corrosive environment 4. Combined effect of compressive stress & corrosive environment (*)

1. 2. 3. 4.

1. 2. 3. 4.

35° 35° to 45° 30° to 37° 35° to 37°

1. 2. 3. 4.

Magnetically Zyglo As (1) & fluor4escent All above is correct (*)

4.

having

following

Drawing number (*) Date of dispatch Number of parts All above is correct

Use clevis bolts Use eye bolts (*) Use close tolerance bolt Both 2 & 3 are correct

Buna – N Butyl Both 1 & 2 are wrong Teflon (*) Hollow reamers are also called

1. 2. 3. 4.

39. The place where external tension loads are to be affected

CORRECT ANSWER IS MARKED * AT END

block

3. The most commonly used synthetic material for making flexible hose is

38. Bolts are inspected

1. 2. 3. 4.

system

Rotars Propellers (*) Wings Powerplant

2. The tile contents

37. The flaring tool produces a flare of

1. 2. 3. 4.

80° 75° 60° 90° (*)

MARCH – 1992

36. Stress corrosion occurs as a result of

1. 2. 3. 4.

Stainless steel Hard tempered steel Cast iron Tool steel (*)

Fluted chucking reamer Shell reamer (*) Jobbers reamer None of the above is correct

5. Which statement is correct 1. Single thread lead equal to the pitch (*) 2. In double thread, pitch is double of the lead 3. In triple thread, pitch is triple of the lead

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 4. Both 2 & 3 are correct

3. Rock wax 4. Resin

6. During spark test of nickel, which color of spark will produce 1. 2. 3. 4.

13. The minimum radius that can be measured by filler gauge is

Orange White (*) Red Straw yellow

1. 2. 3. 4.

3/64" 1/64" (*) 1/32" – ¼" 1/16"

7. Function of disintegrator is to 14. Accuracy of square gauge can be checked by

1. Make hole without producing chips 2. Make hole of any shape 3. As in 1 & 2 & also make hole in any kind of material 4. Check the accuracy of surface plate

1. V – block (*) 2. Jevel protector 15. What is the function of ratchet step in micrometer

8. Mark the wrong statement 1. For insite check, the penetrate dye process is useful 2. Crack is indicated by a red stain termed by the dye in case penetrate dye process 3. Radiographic inspection is not suitable for surface crack (*) 4. The eddy current inspection offers improved sensitivity as compared other NDT best

1. Prevent turning of the thimble 2. Prevent the use of too much pressure 3. As in (2) & prevent further turning of the thimble after correct pressure has applied (*) 4. All above correct 16. If a micrometer having negative error then the amount of error 1. Must be added to the final reading (*) 2. Must be subtracted from the final reading 3. Must be corrected before taking any other reading 4. Both 2 & 3 are correct

9. The function of torch tip is to control the 1. 2. 3. 4.

Amount of heat Flow of gases Both 1 & 2 are correct (*) All above wrong

17. Precision made of

10. Galvanizing is the process of coating zinc is normally carried out on 1. 2. 3. 4.

1. 2. 3. 4.

Al-alloy Iron & steel Steel parts (*) Mag-alloy

instruments

are

normally

Tempered steel Hemonic metal Nichrome steel or Inver steel (*) Stallite

18. In pentad

11. Mark the correct statement

1. Screen grid is placed between suppressor grid & control grid (*) 2. Control grid is placed between suppressor grid & screen grid 3. Suppressor grid is placed in between control grid & screen grid 4. There is no suppressor grid

1. Double cut means two different strokes at angle opposite to each other (*) 2. Second cut is line medium smoothness 3. Double cut & second cut is same 4. All above is correct 12. Name the kind of flux used with soldering the brass

19. Zener diode are used for 1. Voltage regulation 2. Some times called break down diode 3. Both 1 & 2 are correct (*)

1. Zinc chloride (*) 2. Zinc carbide

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 4. Converting ac into dc with mechanical aid 20. Voltage induced by maximum when loop is

generator

is

2. Fatigue cracks give sharp clear pattern 3. Fatigue cracks are normally found on L/G torsion link legs attachment point 4. All of the above is correct (*) 4. Intergranular corrosion occurs due to

1. 2. 3. 4.

Perpendicular to the lines of force Parallel to the lines of force (*) Coming away from lines of force Going towards the line of force

1. Lack of uniformity in the alloy structure 2. As in (1) & is difficult to detect in its original state (*) 3. Combine effect of tensile stress & corrosive environment

21. A two pole alternation having 1800 rpm has frequency of 1. 2. 3. 4.

22. Inverter are frequency of 1. 2. 3. 4.

5. Mark the correct statement 1. As length increases for a given size of wire the resistance increase 2. As size of wire increase for a given wire length resistance decrease 3. As size of wire decrease for a given wire length resistance decrease 4. Only 3 is wrong (*)

60 cps 120 cps 30 cps (*) 90 cps producing

current

at

300 cps 400 cps (*) 200 cps 450 cps

6. A resistor if second color land is brown then 1. It will indicate the age of tolerance of brown 2. It will indicate the ohmic value of brown (*) 3. No tolerance 4. It will indicate the number of zero to be added

23. Ball bearing can take 1. 2. 3. 4.

Radial load only Axial load only Both radial & axial load (*) It takes thrust only load

7. Fuses are normally made up of metal having low melting point statement is rue

GENERAL PAPER – 1991 1. ATA 100 specificatio9ns chapter 31 indicating 1. 2. 3. 4.

1. Low melting point material is alloy of tin & bismuth 2. If fuses made of copper than it is called current limiter 3. As 1 & 2 & fuses are installed in the circuit so that all the current must pass through it 4. All the above is correct (*)

Ice & rain protector Indicating & recording (*) Landing gear Flight controls

2. Circular magnetization is used for 1. Detecting cracks running perpendicular to the axis of the part 2. Detecting cracks running parallel to the axis of the part (*) 3. Detecting cracks which is al. angle to the axis of the part 4. 2 & 3 are correct

8. Micro switches are mostly used in a/c, making contact open or close movement is about 1. 2. 3. 4.

1/8 inch or less 1/6 inch or less 1/16 inch or less (*) ¼ inch or less

3. Mark the correct statement 9. Which equation is used to find out capacitive reactance

1. Fatigue cracks are normally formed on parts that are in services but not on new parts

CORRECT ANSWER IS MARKED * AT END

1. Xc = 2 πfc 116

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. The process in which the parts are magnetized out the magnetic power used in select the flow is fluorescent 3. As in (2) & will glow under black light (*) 4. All are wrong

2. Xc = ½ πfc (*) 3. Xc = 2 π/fc 4. Xc = ¼ πfc 10. The minimum thickness which can be measured by fealer gage is 1. 2. 3. 4.

16. In lead acid battery the positive plate & the negative plate is made up of

0.0020 inch 0.0015 inch (*) 0.015 inch 0.001 inch

1. Positive plate is made up of lead while negative plate is made up of lead sulphate 2. Positive plate is made up of lead while negative plate is made up of lead peroxide 3. Positive plate is made up of lead peroxide while negative plate is made up of sulphate 4. Negative plate is made up of lead peroxide while positive plate is made up of sulphate

11. Steel containing 0.7 to 2% carbon is known as 1. 2. 3. 4.

Plain carbon steel Medium carbon steel High carbon steel Cast iron (*)

12. Which statement is correct for flame hardening

17. Match the following

1. Normally carried out in shafts, chains 2. Normally carried on parts where only a portion is required to be hard (*) 3. The main disadvantage of this method is that the time required for the is much more 4. All are correct

1. 2. 3. 4.

TITANIUM BEARING GEAR Ni-Cr steel Non – magnetic Teeth Teeth Ni – Cr Non – magnetic Non – magnetic Ni – Cr Teeth (*) Teeth Ni – Cr Non – magnetic

18. During carburizing emitted

13. Which statement is correct in case of introducing hardening

1. 2. 3. 4.

1. Heating the metallic substance by means of alternating magnetic field 2. The depth of the case depends upon frequency intensity of the em field but not on time period 3. With this method property of core material is not affected 4. All are correct (*)

which

gas

is

Carbon di oxide Carbon mono oxide (*) Carbon tetra chloride None above correct

19. Cold water quenching is normally carried out for the parts produced from 1. 2. 3. 4.

14. Which statement is true regarding titanium

Tubing Forging Extrusion All above is correct (*)

20. Arrange the metals are put increasing order of conductivity

1. Ti is approx. 70% heavier than Al & 50% lighter than stainless steel 2. Fatigue resistance of Ti is greater than Al & less than steel 3. Corrosion of Ti is uniform 4. Both 1 & 2 are correct (*)

1. 2. 3. 4.

15. Magnetic is

their

Iron < Al < Nl < Cu Al < Iron < Ni < Cu Iron < Ni < Al < Cu (*) Iron < Ni < Cu < Al

21. In instrument range marking a yellow color indicates

1. The process in which the parts are magnetized

1. Permission limit 2. Cautionary range & take off range (*) 3. Operation permissible for few time

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 4. Operation with certain precautions

2. Cam lock 3. DZUS 4. Both 2 & 3 are correct (*)

22. Mark the correct statement 1. Instrument panels are normally made f non-ferrous material 2. Panels are usually shock mounted to absorb low frequency, high amplitude shocks 3. No. of shock mount used are depend on length of the unit 4. All are the correct (*) 23. Nickel alloy sharpened by 1. 2. 3. 4.

are

normally

can

be

1. Helicoils are made of 18 – 8 stainless steel 2. Screws comes in AN 500 NAS 200 series 3. Dia of nut is measured in 16th of an inch 4. Lockwashers should be used only with secondary structure not with present (*) 30. A/C bolts having two dash on its head indicating

Grinder Filling (slowly to avoid sparking) Both 1 & 2 are correct Cannot be sharpened

24. Screw driver according to its 1. 2. 3. 4.

chisels

29. Mark the wrong statement

1. 2. 3. 4.

classified

Corrosion resistant Al-alloy 2024 bolts Both 2 & 3 are correct (*)

31. Corrosion on Mg-alloy is indicating

Shape Type of blade (*) As 1 & blade length Both 2 & 3 are correct

1. 2. 3. 4.

25. In gas welding of oxygen & acetylene regulators has 1. Left hand thread & right hand thread respectively (*) 2. Right hand thread & left hand thread respectively 3. Both have left hand thread 4. Both have right hand thread

White spots (*) Green spots Blueish spots Yellow spots

32. Solution heat treatment & then cold worked is indicated by

1. 2. 3. 4.

T2 T3 (*) T4 T5

33. Match the following 26. Pull through rivets are fabricated in two common head styles 1. 2. 3. 4.

Universal head / protruding head Brazier head 100 countershunk head Both 1 & 3 are correct (*)

27. A rivet head having raised cross indicating 1. 2. 3. 4.

5056 T (*) 2024 T Carbon steel Corrosive resistant steel

Electron A – Al Alduminium B – Mg Duralumin C – Al Al clad D – Al

1. 2. 3. 4.

1 – A, 1 – B, 1 – C, 1 – D,

2 – D, 2 – D, 2 – D, 2 – C,

3 – C, 3 – C, 3 – A, 3 – A,

4–B 4–A 4–B 4–B

34. In brinell tester dia of the ball is 1. 10 mm & apply pressure of 8000 kg for ferrous metal 2. 0.3937 inch & apply pressure of 8000 kg for ferrous metal 3. 10 mm & apply pressure of 500 kg for non-ferrous metal (*) 4. All are correct

28. Which turn lock fastener contains stud assembly grammet & receptacle 1. Air lock

CORRECT ANSWER IS MARKED * AT END

1. 2. 3. 4.

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. Cadmium plated low carbon steel 3. Corrosion resistant steel 4. Both 2 & 3 are correct (*)

35. In case of torque wrench, the 1. The basic formula for use is Tw = Tex A/B (*) 2. The basic formula for use is Tw = Twx A/B 3. The basic formula for use is Tw = Twx B/A 4. The basic formula for use is Tw / Twx B/A

with extension 42. Mark the correct statement with extension 1. Parker – kalon Z – type sheet metal screw is a self tapping screw 2. Parker – kalon Z – type sheet metal screw are blunt on the end 3. As in 2 nad are normally used for temporary attachment 4. All are correct (*)

with extension with extension

36. Lock bolts are normally used for 1. L/G, fitting, fuel line fitting 2. Primary controls 3. Wing splice fitting, skin splice plates longerons 4. Both 1 & 3 are correct (*)

43. Cotter pins are normally made of 1. 2. 3. 4.

37. The most commonly used composite material is 1. 2. 3. 4.

Cadmium plated high carbon steel Cadmium plated low carbon steel Corrosion resistant steel Both 2 & 3 are correct (*)

44. How much thread should be exposed after lightening the turn buckles

Kevlar Carbon / graphite (*) Fibre glass Boron

1. 2. 3. 4.

38. Buttress threads are normally used 1. Where a thread requiring great strength in one direction only 2. To vice, guns etc. 3. Where it is necessary for transmitting power in either direction 4. Only 3 is wrong (*)

Atleast three threads Less than three threads Not more than three threads (*) Not less than three threads & not more than five threads

45. In annealing parts most be cooled in 1. 2. 3. 4.

39. In transition fit

Still all Furnance (*) Brine Oil

46. Mark the correct statement

1. Shaft is longer than the hole 2. Shaft is smaller than the hole 3. Shaft & the hole are approx of same size 4. All the wrong

1. Impact resistance decreases goes softer & softer & vice 2. Impact resistance increases goes softer & softer & vice 3. Impact resistance increase goes harder & harder & vice 4. Impact resistance decrease goes harder & harder & vice 5. 2 & d are correct (*)

40. There is a difference between AN & AN fitting which is correct 1. AN has gray color while AC has yellow color 2. AN has the gray color while AC has the blue color 3. AN is longer while AC is shorter (*) 4. As inm 2 & AM has 35° angle & AC has 37° angle

as metal as metal as metal as metal

47. Which formula is used for calculating the inside dia of an internal gear 1. 2. 3. 4. 5.

41. Cotter pins are normally made of

Ng – Np/2c N – 2/DP (*) PD – 2/DP Ng – Np/2p Ng – Np/DP

48. Trammel is also called

1. Cadmium plated high carbon steel

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 1. 2. 3. 4.

Circle maker Divider Beam compass (*) Both 2 & 3 are correct

1. 2.

49. When thimble makes one complete revolution it moves on the sleeve 1. 2. 3. 4.

0.40 inch 0.25 inch 0.025 inch (*) 0.0025 inch

57. Variation in uniformity on the cylindrical surface can be checked by 1. 2. 3. 4.

50. Surface plate is made of 1. 2. 3. 4.

Cast Granite Nimonic alloy Both 1 & 2 are correct (*)

1. Letter A on the drill indicated smallest size while letter Z indicated the largest size (*) 2. Letter Z on the drill indicated smallest size while letter A indicate the largest size 3. The algebric difference between main limit and the basic size is low as lower deviation 4. Both 2 & 3 are correct

Reference number (*) Length of the jaw Weight of the vice Both 1 & 2 are correct

52. Parcoluburizing is carried out on 1. 2. 3. 4.

Iron & steel (*) Mg-alloy Al-alloy All above the wrong

59. The pressure angle of a gear teeth is 1.

53. Kelvar is identified by it's 2. 1. 2. 3. 4.

Black color Yellow color (*) White glaming color Brown color

3. 4.

known as

1. 2. 3. 4.

Weft Bias (*) Selvage edge None of the above

1. Two aneroid capsule 2. Pressure cutting knob for adjusting barometric pressure 3. Three aneroid capsule 4. All of the above (*)

from

62. An altimeter consist of

56. Mark the incorrect choice

CORRECT ANSWER IS MARKED * AT END

11101 (*) 10101 10011 11111

61. An altimeter consist of

55. MEK is used 1. For cleaning dust, grease composite component (*) 2. For cleaning all parts 3. For cleaning any parts 4. For cleaning electrical equipment

The angle between the tangent to the pitch circle & the perp line the contact point of the gear teeth (*) The angle between tangent to the line of contact perp to the pitch circle The angle between the line perp to the pitch circle & line of contact All the wrong (*)

60. The binary equivalent of 29 is

54. Thread running at 45° from warp is 1. 2. 3. 4.

DTI (*) Center square Square gage Hermphrodite caliper

58. Mark the correct statement

51. Vice can be classified according to 1. 2. 3. 4.

3. 4.

A fine Al screen may be laminated under the top layer of fabric dissipate electrical charge. Microballons are mixed with regin to add strength (*) PVC can be cut with a hot wire cutter Tedlar is a layer of plastic coating which serves as an addition moisture barrier.

1. Two aneroid capsule

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. Pressure cutting knob for adjusting barometric pressure 3. Three aneroid capsule 4. All of the above is correct (*)

2. 0.002 mm 3. 0.02 mm (*) 4. 0.009 cm 7. In vernier macrometer 9 parts of main scale is divided into 10 parts of vernier scale the main scale has the graduations of 1 mm find the length count.

63. Most headless notch screws are turned by 1. 2. 3. 4.

Screw driver Phillips screw driver Internal screw driver Allen wrentch (*)

1. 2. 3. 4.

SEPTEMBER 1994 1. Aviation snaps are used on 1. 2. 3. 4.

8. SCR is

Heat treated Al alloy sheet (*) Stain steel Fibre All of the above

1. Four junction diode 2. Three junction diode 3. Two junction forward biased with one reverse biased 4. 2 & 3 are correct (*)

2. Soldering used for electrical connections has the MP range 1. 2. 3. 4.

0.01 cm 0.001 cm 0.09 mm (*) 0.009 mm

9. The triode consists of

100 degree to 200 degree C (*) 100 to 300 degree 300 – 600 degree C 200 – 300 degree C

1. 2. 3. 4.

Anode, grid, heater Plate, grid & heater Anode, plate, grid heater, & cathode Plate, cathode, heater & fine mesh of wore between plate & cathode (*)

3. Helical grars are used for 10. The zenor diode 1. Transmit motion to shaft at an angle 2. Transmit motion to shaft which are perpendicular together 3. To carry larger load (*) 4. None of the above is correct

1. Is used as rectifier 2. Is used for voltage regulation (*) 3. Is used for motor protection & in clippin circuit 4. Both 2 & 3 are correct

4. The heat conductor available during all features in aircraft used is 1. 2. 3. 4.

11. Static vents in pitot static system are located with

Copper Aluminium Bras Silver

1. 2. 3. 4.

5. The most accurate system for drill size is 1. 2. 3. 4.

From at aluminate ice To aluminate ice formation To eliminate position error (*) All of the above is correct

12. Toflon hose is

Friction (1/16 inch – 3 & ½ inch) 1/63 inch to 1/6 a to z letter system No 80 to no 1 system (*)

1. 2. 3. 4.

6. In a vernier scale 24 division are equal to 25 division of vernier scale, 1 centimeter of main scale is divided 20 equal parts & the least count.

High strength High temperature resistance 1 & 2 are correct (*) None of the above is correct

13. X-ray used in N.D.T. inspection 1. Have short wave length high protecting power (*) 2. Have a long wave low protecting power 3. 1 & 2 are correct

1. 0.001 cm

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 4. None of the above

otehr & supplied with same directing AC.

14. The cause of buckling of sheet is 1. 2. 3. 4.

1. 2. 3. 4.

Small hole (*) Long hole Hammering Heat

22. Which of the following has negative coefficient of resistance

15. The repair a crack the joint is to be formed 1. 2. 3. 4.

1. 2. 3. 4.

Lap joint Butt joint (*) Tea joint Corner joint

1. Cylinder vale should be closer first 2. Accetelene cylinder valve is close first (*) 3. Both the close simultaneously 4. Accetelene cylinder pressure is reduced

1. During all stages of battery servicing 2. When battery is over heated 3. During charging operation of the battery (*) 4. During discharging operation of the battery

1. 2. 3. 4.

4 revolution of crank shaft 2 revolution of crank shaft (*) 1 revolution of crank shaft 360 degree revolution of crank shaft

1 ohm 8 ohm (*) 6 ohm 4 ohm

25. If resistor of 30 ohm are connect & battery voltage is 2 v then a meter reads

18. Magnesium is Susceptible to corrosion Corrosion resistant & light weight High, tendency to crack 1 & 3 are correct (*)

1. 2. 3. 4.

19. When switch Mg is open voltmeter indicator 1.5 v & when close indication 1.35 v current is lamp. What is the internal resistant of battery: 1 ohm 0.15 ohm (*) 1.35 ohm 1.50 ohm

1/10 A 3/10 A 7/10 A None of the above is correct (*)

26. Identification of titanium 1. 2. 3. 4.

Spark Not standing & making in glass Acid best Both 1 & 2 are correct (*)

27. In floroscent dye penetrant test the colour of the light use in the part inspected

20. The altemeter is checked by when barometer is not available

1. 2. 3. 4.

1. Micromonometer 2. Vacuum Chamber 21. The identical insulated wire coils are hung from air to that the facing each

CORRECT ANSWER IS MARKED * AT END

1. 2. 3. 4.

24. If a wire having a resistance of 9 ohm is increase its length twice, then new resistance is

17. Hydrogen is given off

1. 2. 3. 4.

Thermistor (*) Transistor Semi conductor Resistor

23. In a 4 stroke cycle the spark plug fires for every

16. To suit the welding torch

1. 2. 3. 4.

Both are attracted to each other (*) Both are repelled Clockwise rotation Anticlockwise rotation

Green color in black light Green color in white light Ultra violet in white light (*) Red color in white light

28. Mark the correct statement

116

REVISED OBJECTIVE QUESTIONS & ANSWERS

1. 2. 3. 4.

amp & secondary current is 90 amp the step down transformer.

Diode is used as a rectifier (*) Tiode is used as a rectifier Diode is used as a amplifier All of the above is correct

1. 2. 3. 4.

29. Cleaning of titanium surface 1. Iron scrappers 2. Steel 3. Mild aspiration or hand plashed with aluminium (*) 4. All of the above is correct

30 40 0 90 efficiency (*)

36. Annealed metal is 1. 2. 3. 4.

To soft Low strength Relieved internal stresses All of the above is correct (*)

30. The NPN transistor 37. Barcol tested is used for 1. Flow of electrons from emitted to collector 2. Holes move from collector to emitter 3. Flow of electron from base to emitter 4. Flow of electron from emitter to base (*)

1. 2. 3. 4.

31. In triode grid

38. Rockwell tested measure

1. Controls the electron flow cathode to plate (*) 2. Resource space charge 3. It increase admission of electrone from cathode 4. Prevent secondary emission

1. 2. 3. 4.

1. 2. 3. 4.

Oxidizing flame Reducing flame Neutral flame (*) Reducing flame but in first flame is neutral & then reduced

1. Teeth per inch 2. The distance from the center of one teeth to another teeth measure pitch circle (*) 3. The distance from the centre one teeth to center of next teeth 4. None of the above is correct

Oxidizing flame Neutral flame Reducing flame Reducing flame but first the flame is neutral & then reduced

41. The binary expression for 296 is

34. The check interior surface condition of cylinder & surface instrument used is 1. 2. 3. 4.

Rectifier (*) Amplifier Oscillator None of the above is correct

40. The CP of bavel gear is

33. Brass & bronze are welded with 1. 2. 3. 4.

Resistance to penetration (*) Diameter of impression Size of identification None of the above is correct

39. PN Junction is used as

32. Al alloys are welded with 1. 2. 3. 4.

Steel Al alloy Titanium As in (2) & copper (*)

1. 2. 3. 4.

Boroscope Fluroscope Endoscope or introscope All of the above is correct (*)

101011101 100101000 (*) 111001100 110010111

42. The nd of TPI are measured by 1. 2. 3. 4.

35. The primary is subjected to 220 v & secondary is step down to give an output of 11 v & primary circuit is 5

115

Screw pitch gauge (*) SWG (Standard Wire Gage) Thickness gauge None of the above is correct

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 43. The output of an OR gate will be given 51. In purely inductive circuit the current 1. 2. 3. 4.

When all the input are energized When all the inputs are zero Anyone of the input is energized 1 & 3 are correct (*)

1. Lags behind the voltage by π/2 (*) 2. Loads the voltage by II/1 Capacitive circuits 3. Is in phase with the voltage 4. Legs behind the voltage by II/2 at high frequency

44. Computer consist of 1. 2. 3. 4.

Printer, decode, memory Input, output, CPU (*) Input, output, printer None of the above is correct

52. The magnetude of the induced emf produced in all coil when a magnet is inserted in to it does not depend upon the

45. The decimal number for 10111011101 is 1. 2. 3. 4.

1. 2. 3. 4.

1502 1500 1501 (*) 1600

46. O-rings are checked for internal cracks by 1. 2. 3. 4.

4 power magnifying glass By rolling on inspection cone By rolling on inspection dowel All of the above is correct (*)

1. 2. 3. 4.

Size of & shape X-ray Thickness of material All of the above is correct (*)

1. 2. 3. 4.

Rom, CPU, ALU Rom, Ram, Prom (*) ALU, Rom, Ram None of the above is correct

55. Stress corrosion occurs main on

1. Transmission of loads for between surface at angles to ech other (*) 2. For a variation of speed 3. In speed reading 4. 1 & 3 are correct

1. 2. 3. 4.

Magnesium alloy Aluminium alloy (*) Stainless steel Both 2 & 3 are correct

56. Purpose of using flux in welding is

49. The DP in a gear indicates

1. 2. 3. 4.

Number of teeth per inch Size of gear teeth Both 1 & 2 are correct (*) None of the above is correct

To reduce oxidation To provide flow to the molten metal To increase the bounding All of he above are correct (*)

57. Optical instrument used to inspect the interior structure of a component is

50. In the case of AC circuits ohm's law hold for

1. 2. 3. 4.

1. Peak values of voltage & current 2. Effective value of voltage & current (*) 3. Instentenneous value of voltage & current 4. All of the above are correct

CORRECT ANSWER IS MARKED * AT END

DC circuti AC circuit (*) 1 & 2 are correct Full wave rectifier

54. Memory of computer are

48. Bavel gears used for

1. 2. 3. 4.

53. Chocks is used as resistance in practical inductive reactance in choke & transformer 1. 2. 3. 4.

47. Radiography depends on

No of turn in the coil Reactance of the coil (*) Magnetic moment of the magnet Speed of the rotation of magnet

116

Fluroscope Foroscope Indoscope All of the above is correct (*)

REVISED OBJECTIVE QUESTIONS & ANSWERS 58. The method of temper steel depends upon 1. 2. 3. 4.

2. 5 ohm (*) 3. 7 ohm 4. 7/R ohm

Type of steel Size of steel Density of steel All of the above is correct (*)

66. The sketch 52 indicates 1. 2. 3. 4.

59. In computers hard disk & floppy disk are 1. Different in used 2. Similar but hard disk can store more than floppy disk (*) 3. Similar but hard disk can store less than floppy disk 4. None of the above are correct

67. The reading shown in micrometer is 1. 2. 3. 4.

60. Indicates on the tools are 1. 2. 3. 4.

Thread shank filler Tap, cutter, pilot Drill cutter None of the above

1. Against corrosion 2. Increase strength to protect the base metal against chemical reaction 3. Wear 4. All of the above is correct (*)

Sheet on plate Average terminate Square None of the above is correct

69. To improve tensile strength, ductility & shock resistance, magnesium casting are normally

62. Fretting corrosion normally 1. 2. 3. 4.

1. 2. 3. 4.

Occur around rivets in a skin Indicates by dart deposites Occur in only molecules 1 & 2 are correct (*)

1. 2. 3. 4.

Gray Red (*) Black All are correct

71.

64. Composite material 1. 2. 3. 4.

Case hardened Solution heat treatment (*) Precipetation heat treatment None of the above is correct

70. Hydrogen is given off

63. The NDT check inspection is made in white light & dye used is 1. 2. 3. 4.

0.175 inch 0.175 inch 1.65 inch 1.35 inch

68. The transferring metal from one object to another by chemical or electrical process is done to protect the base metal

61. The gage shown in the sketch used for checking 1. 2. 3. 4.

All grains punch Prick punch Pin punch / drift punch Concer punch

Have reduced wear Do not corrode Have high strength to weight ratio All above are correct (*)

1. 2. 3. 4.

65. An AC series circuit contains 4 ohms resistance & 3 ohm inductive reactance what is the impedance of the circuit

72.

1. 1 ohm

In electrolyte Lead acid battery In over heated condition After fully charged condition in Ni-cd battery (*) As per ATA 100, identification of a/c electrical cables, letter & size are marked In the middle Side by side (*) Prefix & Suffix None of the above In modern a/c most popular heat treated aluminum alloy used in structural application

1. Alloy 2024 (*)

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. Alloy 5054 3. Alloy 5003 4. Alloy 7075

3. Both are correct (*) 4. Artificial aging 80.

73.

A coil is helped with a plain horizontal to certain surface & a bar magnet is dropped vertically downward

1. The magnet will fall with constant acceleration equal to 'G' 2. Constant acceleration greater than 'G' 3. Constant acceleration less than 'G' 4. Non uniform acceleration less than 'G' (*) 74. 1. 2. 3. 4. 75.

The main control unit of computer is present in

1. 2. 3. 4. 81. 1. 2. 3. 4.

VDU CPU (*) Keyboard Hard disk

82.

While treating for magnetic testing it was found non magnetic, in nitric acid it was found rapid action, greenish blue

1. 2. 3. 4. 83.

1. 2. 3. 4. 76.

Nickel steel (*) 18 – 8 steel Monel CRS

1. 2. 3. 4.

More correct than digital computer Less accurate than digital computer (*) Both 1 & 2 are correct None of the above

1 2 3 4 78. 1. 2. 3. 4. 79.

Which language is oriented language

the

business

Pascal Basic Fortran Cobol (*) The third generation computer Integrated circuit are used Microprocessor are used (*) Semi transistor All of the above is correct The unit of the memory is Bite Bits Nibbles All of the above is correct (*)

In computer machine language is High level language Low level language (*) Very high level language None of the above is correct

1. 2. 3. 4.

Decimal equivalent to binary number 110 is

86.

symbol

i.e.

The principle local carrying member in a composite structure is Fibres (*) Matrix Adhesive Rasin Intraply hybrid composites means

1. Inforcing material of same fibre in different layers 2. Reinforcing material woven from two more fibre types (*) 3. Reinforcing material different indifferent layer 4. None of the above is correct

2 3 6 (*) 9 Aluminium alloy can be heat-treated

1. Solution heat treatment 2. Precipitation heat treatment

CORRECT ANSWER IS MARKED * AT END

Explain the ??? basic

1. Beginners all purpose instruction code 85.

77.

Cadmium Copper Tin & zinc All of the above is correct (*)

Analog computer is 84.

1. 2. 3. 4.

In NDT inspection, performance of magnetic particle inspection can not effect by

87.

116

Metal matrix composite is a recent composite material where in

REVISED OBJECTIVE QUESTIONS & ANSWERS 94. 1. Resin in reinforced with metal 2. Resin & fibre & reinforced with metal 3. Fibre are reinforced with metal during melton stage 4. All of the above is correct (*) 88.

1. 2. 3. 4.

1. 2. 3. 4.

Replacement of honey comb core segment to the existing honey done with help of

95.

Film form adhesive (*) Freeing adhesive Epoxy resin with fibre All of the above are correct Two wires each a meter long are kept at a distance of 0.02 & 16.2 ampire current is flowing through each wire, then force the wire will be

97. 1. 2. 3. 4.

In computer memory store measured by

98. 1. 2. 3. 4.

Byte / bit (*) Power Both 1 & 2 None of the above is correct

1. 2. 3. 4. 92. 1. 2. 3. 4. 93.

The NDT radiography method the density means

The computer device

mark

the

storage

VDU Printer Mouse Floppy disk (*) Expand the term Ram while loss the term 'Ram" means

1. Random access memory (*) 99.

91.

The measure skin thickness of hollow tubular member is normally done by

1. Degree of blackness (*)

1. Attractive if the direction of the current flowing through (*) 2. Repulsive if direction of current will be same 90.

Seam welding Spot welding or butt welding (*) Electric resistance welding All of the above is correct

1. By distructing the tube 2. By micrometer tube (*) 3. Eddy current 96.

89.

For high Al alloy the more suitable welding is

The thickness of conducting & non conducting is done by

A lead acid cell contains

1. Positive plates cooted with lead aproxide 2. Liquid electrolyte consists of the sulphate & water 3. Negative plate made of lead 4. Both 1 & 3 are correct (*)

Micrometer Eddy current (*) Ultrasound Caliper Evidence of corrosion on copper is indicated by

100. Mark the correct statement is 1. AND gate is one whose energized when all energized 2. OR gate is one whose energized when more of the (*) 3. A gate is a logic circuit with are many output 4. All of the above is correct

Red spot on the surface steel Green spot in the surface (*) Grey spot on the surface None of the above is correct Evidence of corrosion on Al, alloy is indicated by

1. More shining portion near the surface area 2. Grey spot 3. Pitting on surface 4. Power form (*) 5. All of the above is correct

output is output is energized one input

101. In a double thread screw 1. 2. 3. 4.

115

Pitch is twice the load Load is twice the pitch Lead is twice the pitch (*) Thread depth is measured parallel to the

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 102. Indication for the dull drilline is 1. 2. 3. 4.

3. 1.5 ohm (*) 4. None of the above is correct

Rough finished hole High temp of the drill Low drilling speed All of the above is correct (*)

109. A torch bulb when cold has 1 A current, it draws a current when growing from a source of 3 v, the resistance of bulb is

103. In NDT magnetic particle inspection cannot be done if the coating of 1. 2. 3. 4.

1. 2. 3. 4.

Copper Tin Nickel & chromium (*) Zinc

110. In a electron magnetic induction unit of magnetic flux is

104. In inspection of a material in non magnetic, nitric & rapid action shows greenish blue mark side for 1. 2. 3. 4.

Carbon steel magnetic Nickel steel (*) Monel 18 – 8 steel

10 cm 1.0 cm 10 mm All of the above is correct

clivisons on the vernier on the main scale is divided in 10 parts while measuring in zero of the vernier lies should of 1.8 cm & 4th division coinsided with a main scale division the length is 1. 1.84 cm 2. 1.04 cm 3. 1.86 cm

112. When 2 conductor of 1 mt in length carrying a current at 2 amp are .025 meter a part from each other 1. Conductor carrying current in the same direction will attract (*) 2. Conductor carrying current in the opposite direction will attract 3. No effect 4. None of the above is correct 113. Unix is the 1. Double operating unit (*) 2. CAD & record of engineering organization 3. None of the above is correct

107. When the plate current is 16 amp, the number of electron flows 10 – 8 electron / sec 10 ?? electron / sec 10 electron / sec None of the above is correct

114. The most powerful computer is

108. Six equal resistance of 1 ohm each are connects in a circuit ABCDEF, the resistance offered by the combination, if the current A & leaves at B is:

1. 2. 3. 4.

Micro computer Super computer (*) Mini computer Laptop computer

115. Matrix is used to 1. Transfer stress to fibre (*) 2. Take stress from the fibre

1. 2.5 ohm 2. 3 ohm

CORRECT ANSWER IS MARKED * AT END

Weber (*) Ampere x meter Newton / meter Newton

1. Rheostat is a variable resister used to vary amount of the circuit (*) 2. Potential meter is a variable resister used to vary amount in the circuit 3. Potentiometer has two terminals 4. None of the above are correct

106. In a vernier caliper, there are 10

1. 2. 3. 4.

1 2 3 4

111. Mark the correct statement is

105. One micron is 1. 2. 3. 4.

5 10 6 8

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 3. Increase the hardness of adhesive 4. None of the above is correct

4. 70% 125. In a given circuit 1.4 A current flowing from point A. what is the current at point B

116. Catalyst in a composite acts as 1. 2. 3. 4.

Hardener (*) Curing agent To increase the property of resin None of the above is correct

1. 2. 3. 4.

a.4 A 1.0 .6 A 1.2 A

117. The used of grid in a triode is 126. EDP stands for in computer 1. To reduce space charge region 2. To control the electron flow between the cathode, & the anode 3. None of the above is correct 4. 1 & 2 are correct (*) 118. The semi conductor negative co-efficient is 1.

having

1. 2. 3. 4.

high

127. Electronic digital computer 1. 2. 3. 4.

Thermister (*)

119. DP indicates in a gear for 1. 2. 3. 4.

Distance between two teeth Height of the teeth Pitch circle None of the above are correct (*)

Mathematical calculation Data processing Stress data in given instruction All of the above are correct (*)

128. (010100)2 convert into octal 1. 2. 3. 4.

120. Diode triode or transistor works on 1. Ohm's law 2. Do not obey ohm's law (*)

(24)8 (15)8 (26)8 (50)8

129. Fillers is

121. Change 1010101 in decimal 1. 2. 3. 4.

Electrical data processing Electronic data processing (*) Entry data processing Electronic discrete program

1. 2. 3. 4.

85 (*) .65 .111 None of the above is correct

Epoxy Cellulose (*) Polyester Boron

130. Which statement is true for leveling

122. PN junction is knows as

1. Leveling of large a/c is critical than lighter a/c (*) 2. Leveling is done normally on longitudinal axis 3. Leveling is done more accurate on lighteral axis 4. None of the above is correct

1. Forward bios (*) 2. Reverse bios 123. Counter sunk rivet: 1. When riveting different layers of sheets

131. The difference between analog computer

124. In a step down transformer the input voltage is 220 v & current 5 A & the output voltage is 11v & the current is 90 A, the calculate the efficiency of the transformer

digital

1. Analog computer has large memory 2. Digital compute cost more & comparatively difficult to program 3. Analog computer is less accurate (*) 4. 2 & 3 are correct

1. 30% 2. 90% (*) 3. 60%

115

&

in

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 132. Excess size of computer depends upon 1. 2. 3. 4.

3. Low permeability of ferro magnetic substance 4. Both 1 & 2 are correct (*)

Software used Frequency & signal received To software & hardware both Hardware (*)

139. A computer stored instruction in 1. 2. 3. 4.

133. The greatest memory of which device 1. 2. 3. 4.

Winchester type device disks (*) Tape type recording instrument Floppy disk unit None of the above is correct

140. An input unit communicate 1. 2. 3. 4.

134. Which are related to the memory 1. 2. 3. 4.

English language Decimal number system Octal number system Binary number system (*)

Hard disk (*) Keyboard CD – Rom Monitor

of

a

computer

Between operate and computer (*) Between memory with printer Between cpu with monitor Between output and computer

141. For jacking the a/c

135. If twist drill is not printed clearly, it can be checked by 1. Drill size gauge number system on left & fraction system on right 2. Drill size gauge with number system on right fraction on left 3. SWG 4. By micrometer (*)

1. Normally the jack points are given in all a/c 2. Three points on a/c for jacking is provided to stabilize the a/c about three points 3. Jacking points are located in relation to CG position 4. All the above are correct (*) 142. In ATA specification the electrical cable number is instructed as

136. Mark correct statement 1. 2. 3. 4.

A transistor connected in common base configuration has a low input resistance & high output resistance At transmeter connected in common emitter configuration a medium input resistance & a output resistance The input & output signals of a common emitter are out of phase All the above are correct

137. The arrow head on the transistor symbol always pointing the direction of 1. 2. 3. 4.

1. 2. 3. 4.

143. Thread in deep holes are cut by 1. 2. 3. 4.

Extension tap (*) Round split die Bottoming tap 1 & 3 are correct

144. Size of flat cold chisel is identified by 1. 2. 3. 4.

Hole flow (*) Electron flow Electrons are the majority carrier Holes are the majority carrier

Prefix suffix In iddle Side & side All of the above are correct

Length of cutting edge Width of cutting edge (*) Weight of the chisel All of the above are correct

145. Mark the correct statement 138. The energy loss in a transformer is due to

1. Corrosion on carbon steel is in form of brown, red color (*) 2. Corrosion on CBS in sheets dimeling is the necessary

1. Heating the coils 2. Eddy current in the core

CORRECT ANSWER IS MARKED * AT END

116

REVISED OBJECTIVE QUESTIONS & ANSWERS OCTOBER / SEPTEMBER 1996 1. In transformers, statement

mark

7. Voltage drop across a conductor of known resistance depends on the

correct 1. Current flowing inside the current 2. Voltage of circuit 3. The amount of thickness of insulation (*)

1. If any of windwings are shorted, it is easy to detect by measuring resistance 2. In case if shorted windwing, the transformer becomes hot 3. If there is shorted windwing, the output voltage will be very high 4. Both 2 & 1 are correct (*) 2. If the frequency of the primary voltage of a transformer is increased from 50 Hz to 60 Hz, keeping peak voltage same, the voltage in the secondary will

wire

8. E – glass is 1. 2. 3. 4.

Also known as electric glass Also known as borosilicate glass Has low strength & weight ratio All of the above is correct (*)

INDIAN INSTITUTE OF AERONAUTICS COMPUTERS

1. Increase by a factor of 60/50 2. Increased by a factor of 50/60 3. Be unpredictable for want of sufficient data 4. Not change (*)

1. A computer in a / an 1. 2. 3. 4.

3. 'n' identical cells, each of the emf E & internal resistance r, are connected in series to form closed circuit. an ideal voltmeter connected across 'n' cells will be

2. A 'Flow chart" is a 1.

1. 2. 3. 4.

NE (*) Zero (n – N)E N (1 – N/n) E

2. 3.

4. Very high insulation resistance electric cable is measured by 1. Meggar (*) 2. High range ohm meter 3. Ammeter 4. Voltameter

of

5. When batteries parallel

in

are

connected

4.

Step wise representation of a programme A systematic pictorial representation of a programme Is a kind of programme written in high level language Either 1 & 2 are correct (*)

3. A digital computer can be operated with 1. 2. 3. 4.

1. Voltage increases, capacity remains the same 2. Voltage remains same but capacity increases (*) 3. Voltage depends upon plate area 4. No effect on either powder or voltage

Only numerical data (*) Only non numerical data Both numerical & non numerical data Neither numerical nor non numerical data

4. Algorithm is a 1. Pictorial representation of a programme 2. A stepwise systematic representation of a programme (*) 3. High level language to represent a programme systematically 4. Assembly language to represent a programme systematically

6. To increase the voltage of battery 1. 2. 3. 4.

Mechanical device Electrical device Electronic device (*) Electromechanical device

Cells are connected in series (*) Cells are connected in parallel Plates are connected in series Electrode area is increased

5. The most powerful of the following: 1. Minicomputer 2. Microcomputer

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 3. Mainframe 4. Supercomputer (*)

12. Find the odd man out 1. 2. 3. 4.

6. Main difference between PC / ATI & PC / XT are 1. PC / AT has much more memory than PC/XT 2. PC/AT has much more speed than PC/XT 3. PC/AT has multi terminal facility & PC/XT has only single terminal facility 4. PC/XT has multi terminal facility & PC/AT has single terminal facility (*)

13. The CPU of the 4th generation computer is 1. 2. 3. 4.

7. Binary equivalent of 0.625

1. 2. 3. 4.

0.010102 (0.101)2 0.11002 0.010112

1. 2. 3. 4.

1. 2. 3. 4.

1. 2. 3. 4.

XOR gate XNOR gate (*) NAND gate OR gate

1. 2. 3. 4.

C 1 1 0 0

1. 2. 3. 4.

80286 processor 80386 processor 80436 processor Pentium processor (*)

18. The main memory of the computer is

01 (*) 1 10 0

1. 2. 3. 4.

11. XOR gate is

RAM ROM Hard disk (*) CD

19. RAM is

1. A parallel switching circuit with exclude condition (*) 2. Series switching circuit with exclude condition 3. Parallel switching circuit 4. Series switching circuit

CORRECT ANSWER IS MARKED * AT END

Making of computer hardware Making of computer software Both 1 & 2 are correct (*) None of the above are correct

17. The fastest of the following is

10. 2 complement of the binary digit is 1. 2. 3. 4.

IBM Microsoft (*) Intel Motorola

16. The company Microsoft is involved in

9. The given truth table is for B 1 0 1 0

Printers Storage devices IC Chip All of the above is correct (*)

15. Bill gates is the chairman of

OR gate (*) AND gate X-OR gate X-NOR gate

A 1 0 0 1

An IC chip using VLSI technology Microprocessor Both 1 & 2 are correct (*) None of the above is correct

14. INTEL is a company involved in the manufacturing of

8. If the inputs of a gate are A & B & its output is A + B the gate is 1. 2. 3. 4.

ALU, Memory, Counters CU, Floppy disket, registers (*) Control unit, MPU ALU, auxiliary memory

116

1. 2. 3. 4.

Volatile semiconductor memory Read/write memory Random access memory All of the above are correct (*)

20. ROM is

REVISED OBJECTIVE QUESTIONS & ANSWERS

1. 2. 3. 4.

1. 2. 3. 4.

Read memory (*) Write memory Both 1 & 2 are correct None of the above are correct

29. The fastest component of the computer is

21. EPROM can be erased by 1. 2. 3. 4.

Sodium light uv rays Electrical pulses Either UV rays or electrical pulses

1. 2. 3. 4.

22. The fastest memory of the following 1. 2. 3. 4.

CPU (*) Computer memory Storage devices Input / Output devices

30. Locate the odd man out

RAM ROM Cache Hard disk

1. 2. 3. 4.

23. The main memory of a computer is located in 1. 2. 3. 4.

8 bits 4 bits (*) 2 bits 16 bits

Hard disk Floppy disk Magnetic tape Compatt disk

31. Compact disk is a 1. 2. 3. 4.

The hard disc (*) Compact disk Floppy disk None of the above are correct

Semi conductor device Magnetic device Optical device (*) None of the above are correct

32. Locate the odd man out 24. ROM is 1. 2. 3. 4.

1. 2. 3. 4.

Volatile semi conductor memory Non volatile semi conductor memory (*) Magnetic memory All of the above are correct

OBR OMR (*) OCR MICR

33. Floppy diskett is a 25. The processing of the CPU is in the order of 1. 2. 3. 4.

1. 2. 3. 4.

Millisecond Microsecond Nanosecond (*) Megasecond

34. The slowest of the following is

26. DRGM is 1. 2. 3. 4.

1. 2. 3. 4.

Semi conductor memory Volatile memory Has to be coefficiated with the data after a certain interval of time All of the above are correct

Hard disk Floppy disk (*) CD Magnetic tape

35. CDROM is released by 1. 2. 3. 4.

27. 1 KB is equal to 1. 2. 3. 4.

EPROM RAM EEPROM Flexible storage media (*)

1000 bytes (*) 2 bytes 1000 MB None of the above are correct

--Infrared light (*) Electrical package By appropriate programming only

36. Modem is an 1. Input device 2. Output device 3. Input / Output device (*)

28. A nibble is equal to

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 4. None of the above are correct 45. Locate the odd man out 37. Locate the odd man out 1. 2. 3. 4.

1. 2. 3. 4.

Dot matrix printer Inkjet printer Chain printer Drum printer (*)

46. The 'Printed document" in computer terminology is termed as

38. Optical scanner is a 1. 2. 3. 4.

Input device (*) Output device Input / output device None of the above are correct

1. 2. 3. 4.

39. A software is a 1. 2. 3. 4.

Light pen Plotter (*) Mouse Joystick

Soft copy Hard copy (*) Firm copy Live copy

47. The display of MONITOR of a computer system is mostly

Set of programmes Set of instructions All of the above are correct (*) None of the above are correct

1. 2. 3. 4.

Semi conductor display LED type display (*) LCD type display Electron beam type

40. Disk operating system is 1. 2. 3. 4.

48. Choose the correct statement among the following

A system software Software environment Software utility package A high level language

1. 2. 3. 4.

41. Computer virus is a 1. 2. 3. 4.

Software programme (*) Hardware programme Machine language Assembly language

49. Printer is connected through 1. 2. 3. 4.

42. Assembly language is 1. 2. 3. 4.

Low level language High level language (*) Machine language All generation language

1. 2. 3. 4.

Machine language Assembly language High level language All generation language (*)

1. 2. 3. 4.

When the programme is over With respect to time When the power is shutoff All of the above except c

CORRECT ANSWER IS MARKED * AT END

CPT LCD Semi conductor display All of the above are correct

51. Which of the following is fixed disk drive

44. Vol storages are those from where data are lost 1. 2. 3. 4.

Parallel port Serial port Both 1 & 2 are correct (*) None of the above are correct

50. The screen in the laptop computer is

43. Which of the following language used memories 1. 2. 3. 4.

Line printer is non impact printer LASER printer is a non impact printer (*) DOT matrix printer is non impact printer Character printer is faster than line printer

Hard disk drive (*) Floppy disk drive Winchaster disk drive CD-ROM drive

52. Unix is a 1. A software 2. A programme

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 3. Multiuser operating system (*) 4. All of the above are correct

4. None of the above are correct 61. Which of the following is a scientific language

53. Assembler is 1. 2. 3. 4.

A software A translator (*) A programme All of the above are correct

1. 2. 3. 4.

54. High level language are

62. Which of language

1. Machine dependent 2. Machine independent 3. Language in which programme is done in 1 & 0 4. Both 2 & 3 are correct (*)

1. 2. 3. 4.

55. Interpreter in computer field is a 1. 2. 3. 4.

COBOL ADA (*) FOPTRAN BASIC the

following

is

not

a

FOXPRROT LISP C VISUAL C++

63. Pick the odd man out

Software (*) Floppy Hardware The special electronic circuit which translate high level to low level

1. 2. 3. 4.

DOS UNIX WIN – 95 DBASE

64. A package is a 56. Internet system is based on 1. 2. 3. 4.

1. 2. 3. 4.

WAN system (*) LAN system Mainframe computer system Many computers connected to a other computer

65. Windows 3.1 is a/an

57. GUI stands for 1. 2. 3. 4.

Software Set of instruction A programme All of the above are correct (*)

1. 2. 3. 4.

Graphical user interface (*) Graphical user internet Graph & user interface Graph & user internet

Operating system (*) Operating environment Package Language

66. Which of the following is not a high level language

58. Y2K problem is a 1. 2. 3. 4.

1. 2. 3. 4. 5.

Software problem Hardware problem Data problem (*) All of the above are correct

59. Virus affects 1. 2. 3. 4.

Basic C Assembly Cobol None of the above are correct

67. Which of the following is not a high level computer language

Hardware Software Both 1 & 2 are correct (*) None of the above are correct

1. 2. 3. 4.

Windows (*) Visual C++ Coral Pascal

60. Anti virus software is 68. DOS stands for 1. Dreaded software 2. Software to scan & remove virus (*) 3. Package

1. Data operating system 2. Disk operating system (*)

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 3. Diode operating system 4. None of the above are correct

2. Germenium 3. Alluminium (*) 4. Cu

October 1998 8. 1.

In d.c. generator single plain coil is rectangle, coil is perpendicular to main flux, emf induced in coil. 1. 2. 3. 4.

2.

1. Current handling ability of rectifiers (Inparallel) 2. Current and voltage handling ability of rectifiers. 3. Voltage handling ability of rectifiers (*) 4. None of the above

Maximum Minimum Zero (No Voltage) (*) None of the above In carbon pole carbon pile is

voltage

regulator

1. 2. 3. 4.

1. Unchanged (*) 2. Gives number indication of the state of the charge of the cell 3. All above are correct

5. 1. 2. 3. 4. 6.

2. 7 × 4 Led = 28 Segment 3. 12. Transformer rectifiers winding is connect in

value

1. 2. 3. 4.

divided

Creast Factor Amplitude Factor Form Factor (*) All above are correct

470 5% 47 5% 47000 5% 47000 10% (*) Selenium material is

rectifiers,

secondary

Star Delta Star Delta (*) Delta Star

13. In general services wiring which wire is suitable

Resistor colour coding is yellow, violet, orange will silver band. 1. 2. 3. 4.

7.

rms

Diode LED SCR (*) Transistor

1.

Lead Lead Peroxide Lead Antimony (*) None of the above In a.c. circuit average value

Silicon Germinium Copper (*) Alluminium

11. In dot metric system use

In Lead – Acid cell grid plates alloy is 1. 2. 3. 4.

Silicon rectifier (cathode) is made of

10. "Firing" term used in

In Nickle Cadmium battery specific gravity of electrolyte is

4.

9. 1. 2. 3. 4.

1. Granular Surface 2. Resistance between two carbon faces depends on area of contact 3. Resistance between two carbon faces depends on pressure of contact 4. All above correct (*) 3.

Selenium rectifiers when connected in series increases

1. 2. 3. 4.

PVC Glass Braid Nylon All above are correct (*)

14. In high operating temperature which wire is use

base

sheet

1. Selemium

CORRECT ANSWER IS MARKED * AT END

1. 2. 3. 4.

PREN EFGLASS (*) TERSIL FEPSIL

15. In UNIFRE – 'F' conductor is

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 4. All above are correct

1. Aluminum Plating

23. In D.C. shunt motor running at rated

2. Copper Plating 3. Nickel Plated Cu (*) 4. Tinned Copper

speed field winding is open, the motor is

16. Electrical Bonding

1. 2. 3. 4.

1. Limit potential difference between all parts 2. Eliminate spark discharge and fire risk. 3. Prevent the possibility of electrical shock 4. All above are correct (*)

24. Mark the correct statement 1. Nibble is half byte (*) 2. 3. 4.

17. ATA – 100 coding for cable 'Position 2' indicate 1. Functional Circuit (*) 2. Unit Number 3. The segment of cable 4. None of the above are correct

25. In Lead – Acid Battery, electrolyte is neutralize by 1. 2. 3. 4.

18. ATA – 100 coding for cable 'Position – b' (N) indicate 1. 2. 3. 4.

Neutral Phase Earth Connected Cable (*) None of the above are correct

Ammonia & Water Vinegar Bi – Carbonate (Backing Soda) & Water 1 & 3 are correct (*)

1. Lithographic 2. Photographic 3. 4.

Switch in off De-energise relay Close C.B. All above are correct (*)

27. Light emitting diode 1. Conduct forward bias 2. Conduct reversed bias 3. 4 × 7 dot matrix = 28 diodes 4. 1 & 3 are correct (*)

20. Co-axial cable 1. Shielded against electrostatic and magnetic field 2. Do not radiate, they will not pick up and energy 3. An electrostatic field does not extend beyond the outer conductor. 4. All above are correct (*)

28. In Servo Mechanism System gain B 1. 2. 3. 4.

21. Current Limiter 1. 2. 3. 4.

spillage

26. Printed circuit board made by

19. In general electrical circuit 1. 2. 3. 4.

Rotate at rated speed Stopped immediately (*) Slowly decrease speed None of the above are correct

Open loop Close loop (*) As in (1) Negative feedback As in (2) Positive feedback

29. Boolean algebra Theorems

Low Melting Wire High Melting Wire (*) Thermal Device None of the above are correct

1. A . A = 1 2.

A + A =1 3. A + A = 1 (*) 4.

22. In D.C. starter generator 1. Shunt 2. Series 3. Fully compounded (*)

A= A

30. In 16 bite hexadecimal

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 1. 2 × 16 2. 162 16 3. 1616 (*)

37. Capacitance measured by

31. Make the correct statement LSI more than 100 gate (*) MSI 12 to 99 gate SSI gate using less than 10 None of the above

resistance of 8 Ω inductive reactance of 12 Ω and capacitive reactance of 18 Ω, connected in series and across the supply of 20 v is

1. 2. 3. 4.

1.5 amp. 2 amp. (*) 1 amp. 4 amp.

1. 1600 rpm 2. 1500 rpm * 3. 1200 rpm 4. 2000 rpm 40. Energy stored in a inductor having inductance of 10 m H and current of 4 amp. 1. 2. 3. 4.

1500 1000 (*) 2000 1000

soda (*) 3. Rinse the eyes with water & KOH. 4. None of the above.

1. A resistance of 6 Ω and inductance of 8 Ω connected in series across 200 v. 50 cps power supply. Voltage drop across 6 Ω res. Is 1. 2. 3. 4. 5.

35. When megger is not in use, where its point is located.

200 v 60 v 120 v (*) 100 v

2. Two signals of same amplitude, frequency and phase difference forms lissijons figure of

Extreme right hand side Extreme left hand side (*) In centre None of the above

1. Circle 2. Straight line with angle of 45° 3. Straight line with angle of 130° 4. Ellipse

36. CE Transistor having highest. Power gain (*) Current gain Voltage gain Input Impedance

CORRECT ANSWER IS MARKED * AT END

160 milli joules 80 milli joules (*) 160 joules 1600 joules

October 2003

1. Rinse the eyes with plenty of water 2. Eye rinse with solution of bicarbonate of

1. 2. 3. 4.

100 60 (*) 50 120

poles, 50 Hz.

34. While working of Lead acid battery, electrolyte is touched to the eyes, whit will do ?

1. 2. 3. 4.

is

39. Synch speed of a motor having 4

33. A transformer having primary turns of 2000 connect across supply of 250 v, give second output of 200 v. what is the number of turns in second. 1. 2. 3. 4.

capacitor

38. Slip speed of motor having speed of 1440 rpm 50 Hz.

32. Current flowing in a circuit having

1. 2. 3. 4.

a

1. Maxwell bridge 2. Wheat stone bridge 3. Schering bridge (*) 4.

4. 2 + 16

1. 2. 3. 4.

of

3. Lap wdg is used for 1. High torque

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. High voltage 3. Low voltage 4. Low current

3. If excited on load, field resistance should be equal to the minimum resistance. 4. All of the above

4. Transistor connecting in which configuration having highest current gain. 1. 2. 3. 4.

10. Conduction for half cycle is possible in 1. 2. 3. 4.

Common base Common collector Common emitter (*) None

11. Insulators have

5. In nodole analysis

1. 2. 3. 4.

1. Number of simultaneous equation to be solution becomes (n – 1) 2. Network Sh__________ atleast ______________ 3. 1 & 2 are correct (*) 4. None of the above

2. 3. 4.

1. 2. 3. 4.

Maximum Value (*) PMS Value PMS Value Maximum Value Average Value RMS Value RMS Value Average Value

1. To convert 3 φ to 2 φ 2. To convert 2 φ to 3 φ 3. 1 & 2 4. To convert 3 φ to 3 φ 14. Starting of slip ring induction motor by

1. Start ∆ 2. Tehostatic Control 3. Resistance in rotor circuit (*)

Class A (*) Class B Class A – B Class C

15. Alternating values normally given in 1. r.m.s. (*) 2. Av value 3. Max value

8. Power gain in a PNP Transistor is Maximum in 1. 2. 3. 4.

Tube factor Tube coefficient Amplification factor All of the above (*)

13. Scott connection is used for

7. Minimum distortion is achieved in 1. 2. 3. 4.

Full valence bend Empty conductor bend High energy gap All of the above (*)

12. In a triode the usual working point on the slope called

6. Peab value is

1.

Class A amplifier Class B (*) Class C Class D

16. Which winding is nearest to the core

CC CB CE (*) None of the above

1. L.V. (*) 2. H.V.

17. Thickness of lamination reduced in xmer

9. Voltage build up condition for shunt generator

low eddy current loss 1. 2. 3. 4.

1. Their must be sufficient diode at magnetism in the poles (*) 2. If excited on open circuit positive field resistance should be more then critical resistance.

115

Low eddy current loss (*) Hyst loss Both None of the above

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 18. Depletion layer contains 1. 2. 3. 4.

3. Low speed 4. 1 & 2 are correct (*)

Positive ions Negative ions 'C' & positive and negative ions (*) Fixed positive ions

19. In Lead – increases

acid

battery

as

27. Electrical characteristic of DC motor

1. Ta / Ia (*) temp

28. Digital switching

1. At high temp, electrical capacity of battery increases 2. High temp diffusion increases. 3. At high temp performance improves 4. All of the above

1. 2. 3. 4.

to 1 φ supply

Resistive circuit (*) Series Parallel All above correct

1. 2. 3. 4.

21. Increasing Q factor 1. 2. 3. 4.

As inductance increases (*) Capacitance increases Resistance Resistance & low ohmic drop

1. 2. 3. 4.

Voltage 120° apart (*) Current ____ by 30° Current lead by 30° 3 VLIC cos φ

31. In an a/c if actuator is moving so _________ and the feedback pcth not working then the system become

1. Direction changes (*) 2. Runs in some direction 23. Ballistic galvonometer is used for

1. Open loop (*) 2. Closed loop 3. Cannot be counted as servo system because servomotor not there. 4. __________

Flux measurement As in 1 & _________ (*) Control spring __________ Mag inertia ________

32. In Feedback

24. When magnetic material is heated

1. Stability Increase (*) 2. Stability Decreases

1. Curie point (*) 2. Maxwell point

33. Maxterm

25. In starting of DC motor, no volt ____ is used for

1. 2. 3. 4.

1. To hold the arm 2. Release the arm 3. For overload protection

AND – OR invert logic (*) OR – AND logic AND – OR logic None of the above

34. + Q charge on solid sphere is

26. Generator will fail to start in which circumstances

1. Equally disturbed throughout the surface (*) 2. Only on the surface 3. Concentrated at centre

1. Open circuit in field 2. Reverse polarity

CORRECT ANSWER IS MARKED * AT END

Saving in material Cost saving Efficiency better P - __

30. In ∆ connection

22. Induction motor change in phase

1. 2. 3. 4.

Flip – flop Bistable multivibrator Debouncing All of the above (*)

29. Mark incorrect advantage of 3 φ supply

20. Unity power in 1. 2. 3. 4.

2. Speed / T

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 44. LCD 35. Electrostatic meters are used as 1. 2. 3. 4.

1. Voltmeter (*) 2. Ammeter 3. Ammeter, voltmeter, wattmeter 36. Stalling current is

Dynamic scattering Field effect ASCII Segmented type

45. LED emmits light when

1. When armature (load) current is zero (*)

1. Reversed biased 2. Delation low increased 3. Electro and hole are merged. (*)

37. In transformer core on load 1. Approximate some flux as on no load. (*)

46. CRT has electrode color given 1. 2. 3. 4.

38. In transformer at no load, current consists of 1. Reactive and active components (i.e. Iee & Iw) (*)

3 (*) 4 2 None of the above

47. P Type semiconductor is doped

39. If by mistake during maintenance the armature wdg of motor is reversed then

1. 2. 3. 4.

1. Motor will not rotate in opp direction then it was previously rotating.

Germanium with Phosphorus Germanium with Antimony Germanium with Indium (*) As 1 & 2 are correct

48. Semiconductor doped with arsenic

40. In case of syn motor when Eb = V motor

1. P type 2. N Type (*)

is said to be 1. 2. 3. 4.

100 % excited Overexcited with leading point Underexcited with leading point Underexcited with lagging point

49. Instrument panel lighting is done by 1. 2. 3. 4.

41. In a 3 φ power system it wattmeters are removed, you can use which of the following for power ________ 1. 2. 3. 4.

50. Cable insulator can with stand high temp and hydraulic fluid

Three voltmeter method Three ammeter method Ballistic galvanometer 1 & 2 are correct (*)

1. 2. 3. 4.

42. Transistor common base configuration (Theraja) 1. 2. 3. 4.

Intgranel light (*) Pillar Bridge high Trans illuminated

Ny Vin Pren Tensil EFGlam (*)

51. Power supply system distribution

High voltage gain (*) High power gain High current gain High resistance

1. Parallel bus 2. Split parallel bus fair 52. Kirchoff's Law applicable to

43. Semiconductor doping conductivity

1. DC only (*) 2. AC only 3. AC & DC

1. Increase (*) 2. Decrease 3. Decrease after certain temp.

53. IR voltage drop calculation consider

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 1. Battery communication 2. Direction of current fluid.

2. 45 (*) 3. 37

54. Photo sensitive diode

62. Resistance of Bonding between two boted ________

1. When light falls emf generator (*) 2. When light falls chemical section take place 3. High emits by current flows 55. If number of uniform wire and core length is double inductance will be 1. 2. 3. 4.

1. 2. 3. 4.

1Ω 0.5 Ω .025 Ω (*) 0.5 mega Ω

63. Induced emf is depends on

Double Half Quadruple (*) No Change

1. Flux density 2. Rate of change of flux linkage (*) 3. Flux line cut

56. Triode gride is

64. Capacitance dos not depend on

1. Negative potential 2. Positive potential 3. Negative and more positive cathode (*) 4. Negative and more negative cathode.

1. Plate area 2. Dielectric material 3. Thickness of plate (*)

than than

1. 10 v (*) 2. 100 v 3. 1000 v

1. Landing gear selecting lever 2. Brace Strut 3. Shock Strut (*)

66. Advantages of electrical / airdriven motor than hydraulic motor

58. Flaming left hand rule middle finger indicates

1. 2. 3. 4.

1. Direction of current (*) 2. Torming direction 3. Flux

59. Power of there phase circuit V3, VL, I2 cos θ, cos θ is angle between

60. Mark the correct statement (906) pp barnad grobe 1. Nibler is half byte (*) 2. 4 bits is one byte 3. Nibler is 16 bits

Reliability Many power (*) More power Accurate power

67. For temp compensation capacitor used 1. 2. 3. 4.

Phase voltage and phase current (*) Line voltage and line current Phase voltage and line current Line voltage and line current

Ceramic (*) Electrolytic Paper Mica

68. BCD invalid 1. 2. 3. 4.

1010 (*) 0100 0101 0111

69. 10 Ω low resistor

61. Octal of Binary 10001012 is

1. Carbon 2. Wire wound (*)

1. 54 CORRECT ANSWER IS MARKED * AT END

Q V

, capacitance voltage is

57. Landing gear selecting lever weak s/w is located at

1. 2. 3. 4.

65. If 1 w jubilant charge of 10 farad c =

116

which

REVISED OBJECTIVE QUESTIONS & ANSWERS 3. Variable 4. All above

78. Essential services connected directly to

70. Equalizing bar are required in (Parallel Operation) 1. 2. 3. 4.

1. 2. 3. 4.

Series (Property) Shunt Alternator Compound (*)

Aircraft generators Batteries Static inverter 1 & 2 are correct (*)

79. For more precise and high temperature greater stability with temperature change use

71. Effect of screen grid 1. 2. 3. 4.

1. 2. 3. 4.

RF amplifier (*) Capacitor between c Amplification factor All of the above are correct

80. Thickness of lamination of transformer depends on

72. Armature current 1. 2. 3. 4.

410 440 20 2 amp (*)

1. 2. 3. 4.

73. State of charge of Ni – cad

1. 2. 3. 4.

74. Which memory is used on every read cycle EPROM PROM ROM EAROM (*)

when

secondary is

1. It neutralized the primary flux 2. It does not affect primary flux 3. Same flux flows through the primary as at no load (*) 4. 1 & 3 are correct

Electrolytic (*) Ceramic Paper Mica

83. In converting two winding transformer to step up auto transformer 1. Flux flows through the secondary increases 2. Connect the transformer as additive polarity (*) 3. Connect the transformer as subtractive polarity 4. Flux linked with the primary winding is less

76. EMF induced in motor 1. 2. 3. 4.

Voltage Current (*) Voltage and current Watts

82. In transformer loaded then

75. Capacitor with polarity 1. 2. 3. 4.

Eddy current loss Frequency (*) Cu loss Efficiency

81. Cu loss of transformer depends on

1. Ferominal voltage 2. State of discharge 3. 1 & 2 are correct (*)

1. 2. 3. 4.

Carbon Metal film Wire wound Chip (*)

Flat hand rule Fleming right hand rule (*) Lenz's law Right hand corek crew

77. Capacity characked of lead acid

84. For matching low impedance to high impedance circuit which configuration is used.

1. One month 2. 3 month (*) 3. Every shop visit

1. CB 2. CC (*) 3. CE

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 4. CB and CC 1. 2. 3. 4.

85. Mark the correct statement, for fully valency band, empty conduction band and high energy gap. 1. 2. 3. 4.

Conductor Semiconductor Insulator (*) Absolute insulator

92. Clutch is used in actuators for

86. In ATA 100 specification for cable position '3' indicate 1. 2. 3. 4.

Function of circuit Segment of cable Cable number 4 (*) Unit number 1

1. 2. 3. 4.

Engine department Landing gear section Lavatory section (*) Cockpit

88. Mark the correct statement, running induction motor,

1. Mechanical overloading (*) 2. Motor cut off 3. Protection of o limit switch operation over travel. 4. Prevent overheating of motor. 93. Mark incorrect statement, transistors configuration,

87. Smoke detector is used in aircraft 1. 2. 3. 4.

In DC circuit only In DC and AC circuit In DC and specified AC circuit (*) In AC circuit only.

for

CE

High impedance High power gain Low voltage gain (*) High current gain

94. Intensity control of CRT adjusted by 1. 2. 3. 4.

while

1. Rotor torque is depend on rotor resistance 2. Rotor torque directly proportional to applied voltage 3. Rotor torque is inversely proportional as standstill reactance 4. Rotor resistance is equal to rotor reactance (*)

Secondary anode voltage varied. Negative voltage of grid is varied (*) Voltage of focusing anode is varied Voltage of first anode is varied.

95. Soldering is avoided by quick joining of two contact is 1. 2. 3. 4.

Crimping (*) Hard solder Silver solder Brazing

96. Photo electric effect is 89. In landing gear retraction extension system, horn sounds and red light comes on when 1. Any discrepancy is found in landing gear 2. Any other gear not down and locked (*) 3. 1 & 2 correct

Photodiode Phototransistor Light rays falls on photocell (*) LED

97. Which gate is used switching operation

90. Aircraft Schematic diagram is drawn on, when 1. When aircraft is in the ground and CB is closed 2. When aircraft is in the ground and switches off (*) 3. During flight position and supply is off. 4. When aircraft is in the ground and external supply is connected. 91. Mark the correct statement, Shunt is used,

CORRECT ANSWER IS MARKED * AT END

1. 2. 3. 4.

116

1. 2. 3. 4.

for

parallel

OR (*) AND NOR NAND

98. Operation code stored during fetching in 1. 2. 3. 4.

Instruction resistor ALU Program center Accumulator

REVISED OBJECTIVE QUESTIONS & ANSWERS

99. In servo system the motor used 1. 2. 3. 4.

107.In microprocessor numerical alphabets

Single phase 2 phase (*) 3 phase Multiphase

1. BITE code 108.Mark the correct blushless alternator,

100.Aircraft instrument motor used 1. 2. 3. 4.

DC shunt wound motor Compound wound motor Single phase induction motor (*) 1 & 2 are correct

109.Mark the correct statement, concept of lighting is such that, 1. Taxi light are at the tip of the wind 2. Landing lights are bright (*) 3. Beacon lights are at the tail tip

1. Air gap between magnetic core and armature (*) 2. Resistance is minimum 3. Ballast resistance adjustment 4. 1 & 2 are correct

110.Electrical system and circuit control by, 1. 2. 3. 4.

102.Aircraft generator busbar is made up of Copper strip (*) Aluminium bar Copper rod 1 & 2 are correct

1. Oil and fluid areas and mechanical support (*) 2. Magnetic protection 3. High temperature areas 4. To reduced the electrostatic induction

Neutralized the primary flux. (*) Does not affect the primary flux Same flux as at no load 1 & 3 correct

112.One wire broken detection system used,

104.Operation principle of proximity switch is 1. 2. 3. 4.

1. 2. 3. 4.

1. Fenowal system (*) 2. Kiddi system 3. Lindburg

Cabin door Passenger and freight door (*) Landing door None of the above are correct

105.Electrodynamometer used for

Switch and relays (*) Microswitch and clutch Switch and brake Brake and clutch

111.Conduct provided for cable for,

103.In transformer secondary is loaded secondary flux, 1. 2. 3. 4.

in

1. Rotory rectifier supply DC to exciter winding of main generator 2. Rotory rectifier supply DC to GCU 3. Rotory rectifier supply DC to exciter generator.

101.In carbon pile voltage regulator, voltage coil resistance is adjusted by,

1. 2. 3. 4.

statement,

instrument

113.Generator output removed by,

voltage

ripple

1. Filters only 2. As in 1 and suitably rated capacitors (*) 3. Shielding

is

AC measurement DC measurement AC and DC measurement (*) All above are correct

114.For short term low resistance wire material used 1. 2. 3. 4.

106.A transistor is above to conduct when, 1. Collector is heavily doped 2. Its base region is narrow (*) 3. Its base region is wide

Copper Aluminium Stainless steel Silver

115.Mark the correct statement, winding is used because

115

wave

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. Circuited biushbar 3. Ground the line 4. 1 & 2 are correct

1. Equalizing connection are not required (*) 2. Reduced the induced emf 3. Same emf is produced 4. Less material used

123.Mark the correct statement, differential current protection

116.In CSD oil used for cooling has a pressure of 1. 2. 3. 4.

in

1. Two current transformer are used (*) 2. Three current transformer are used 3. As in 1 and connected between negative and earth 4. As in 2 and connected between two phases.

120 – 160 psi (*) Below 300 psi Above 300 psi Below 500 psi

124.Mark the correct statement, in batteries 117.Flat compound generator has 1. Full load voltage equal to no load voltage (*) 2. Full load voltage is more than no load voltage 3. Full load voltage is less than no load voltage

1. Capacity increases as rate of discharge decreases (*) 2. Capacity increases as rate of discharge increases 3. Capacity decreases as rate of discharge decreases 125.Cell balancing is carried out when

118.Bonding is used aircraft to provide 1. Capacity is less then 80% (*) 2. Battery voltage is less 3. Battery cells is leaking

1. Low resistance path (*) 2. High resistance path 119.Relighting of combustion during flight is done with 1. 2. 3. 4.

system

Starter and ignition is used Only starter is used Low rating is used (*) High rating is used

120.Current coil is RCCB is used for the purpose of 1. It aids the flux to voltage coil when the current flows in the forward direction (*) 2. It opens the circuit when the reverse current flows from the battery to the generator 3. It prevent the battery from overheating 121.Resistor is in series with mutual reactor 1. Time constant is directly proportional to mutual reactance 2. Flux saturated when mutual reactor is maximum 122.Mark the correct statement, differential current protection is used to detect 1. Short circuit feeder line (*)

CORRECT ANSWER IS MARKED * AT END

116

126.In capacitance system

type

1. Capacitance increases increases. 2. Capacitance increases decreases. 3. Resistance increases increases. 4. Resistance increases decreases.

fire

warning

as temperature as temperature as temperature as temperature

127.Sabilizing winding used in alternator as 1. Transformer type of coupling is provided. 2. Gives signal to voltage regulator circuit when there is voltage fluctuation in voltage regulator circuit. 3. As in 1 & 2 are correct (*) 128.In Transistorized voltage regulator, DC supply to rotor is continued. 1. When there is conduction of zenor diode 2. When less voltage is apply to zenor diode (*) 3. When transistor TI start to conduct.

REVISED OBJECTIVE QUESTIONS & ANSWERS 129.Mark the correct factor is the ratio of 1. 2. 3. 4.

statement,

Form

1. 15 kv at 15 minutes 2. 1500 volts for 5 minutes 3. Immersed in water for 1500 volts at 15 minutes 4. Immersed in water for 15000 volts at 5 minutes

Maximum value to rms value rms value to average value (*) Peak to peak value Maximum to average value

137.Mark the correct statement, resistor connected in parallel

130.Hysterisis motor is not used in aircraft because

1. Voltage across individual resistance is more than source voltage. 2. Product of voltage and current across individual resistor is additive 3. Current are additive. (*)

1. The magnetism induced in the rotor and lagging characteristis rotor material (*) 2. Low hysterisis losses of motor 131.While monitoring aircraft electrical system the following system is used. 1. 2. 3. 4.

138.Inductance of inductor is depend on

EICAS ECAM As in 1 & EFIS 1 & 2 are correct (*)

1. Current through the coil and number of turns of coil (*) 2. Distance between the turns 139.External pressure of aircraft is increase and decreasing internal pressure by the

132.Shunt limited motor, 1. 70% of flux produced by shunt winding and 30% by series winding 2. It has minor shunt and large series winding (*) 3. It has minor series and large shunt winding

1. 2. 3. 4.

Outflow valve Negative pressure relief valve (*) Pylon valve Bypass valve

140.APU connection 133.Exceptional sensitivity relay, 1. Connector is plug into the right side of the fuselage. 2. Connector is plug into the aircraft when the battery is removed.

1. Polarized armature relay (*) 2. Slug relay 3. Heavy duty armature relay 134.For measurement of capacitor and dielectric loss of capacitor 1. 2. 3. 4.

141.The selection of diagram related to aircraft system and selection of status measured in from

Schering bridge (*) Wheatstone bridge Hay's Bridge Maxwell wien bridge

1. Flight phase 2. Manual mode 142.Mark the correct the statement

135.Thermal runway in battery is prevented by 1. Integral fan is connected in battery compartment for cooling of the battery 2. Constant current charging method is used 3. Device in battery to warning of high temperature (*) 4. All above are correct

1. Ramp tester is produced by manufacturer of equipment 2. Ramp tester is produced by manufacturer of aircraft 3. Ramp tester is produced by tester carried out on ground JUNE 2000 1. The fundamental frequency is

136.Dielectric testing of cable is carried out at,

1. w (*) 2. w/r

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. Alkaline batteries the electrolyte with respect should be 1. 2. 3. 4.

level of to plates

1. Sheilding against signal interference (*) 2. In a/c fluid areas 3. Both are correct

Above (*) Same Below Complete filled

10. HRC fuse should for 1. High rupturing capacity fuse (*) 2. Emits enclosed inert gase

3. Lead acid cell when it is overcharged it causes. 1. 2. 3. 4.

11. Carbon resistors are preferred than wire wound resistor because they have

Sulphation (*) Dechlorination Chlorination None of the above

1. High strength 2. High stray inductance (*)

4. Alkaline batteries as compared to acid batteries 1. 2. 3. 4.

Cheaper (low initial cost) Lower weight to cap. Ratio Higher rate of charging and insensitive Higher power to weight ratio (*)

13. Compensating generators

Moving coil type Permanent magnet (DC) (*) Electrodynamic type (AC and DC) Hot wire type (AC and DC)

1. Electrostatic voltmeter 2. Hot wire type (*) 7. Conductor and insulators used in cable of type MIL – W – 5086 A (Type 2) as 1. Tinned copper or aluminium positive nylon. 2. Tinned copper or aluminium glass positive nylon (*) 3. Alluminium 8. In Aircraft wiring it is necessary the wire should be have

used

in

winding

used

1. 2. 3. 4.

wear

5 7 (*) 3 6

15. Between no load and full load motor develops the least torque. Series (*) Shunt Commulative compound Differential compound

16. Corel of a magnetic amplifier

116

in

14. A 4 pole, 12 slots lap wound DC armature has two coils sides / slot. Assuming single turn coil and progressing winding. The back pitch would be

1. 2. 3. 4.

High current withstanding capacity Least of voltage drops betwen 2 ends Should be flexible All are correct (*)

CORRECT ANSWER IS MARKED * AT END

winding

1. Reduce reactance sparking 2. Brush wear and commutator reduction 3. Reduce ratio interference 4. All of the above are correct (*)

6. For measurement for very high voltages upto 500 kv instrument type used is

1. 2. 3. 4.

12. Compensating generator

1. Lie in series with armature winding 2. As in 1 and in series with the inter pole winding 3. Sides lie parallel to the sides of the armature coil 4. All above are correct (*)

5. The meter that is suitable for only DC measurement 1. 2. 3. 4.

9. Metal conducts are generally used for covering cables

REVISED OBJECTIVE QUESTIONS & ANSWERS 1. mmf increases gradually with flux density 2. mmf increases as flux density increases 3. Same as in X'former

25. In a transistorized voltage regulator used in alternator the output voltage depends upon 1. Input voltage 2. Resistor connected in series with transistor (*) 3. By adjusting the screw of an armature contact.

17. The ordinary efficiency of a given transformer is maximum when 1. If runs at half full load 2. If runs at full load 3. If it Cu loss equals to iron loss.

26. The output voltage of a step down type switching voltage regulator depends on

18. Two x'mer operating in parallel having equal outputs and voltage ratio carry different loads because 1. They have an impedance (*)

equal

1. 2. 3. 4.

percentage

27. Common base configuration is used because it has high

19. Regarding skewing of rotor bars in a SCIM

1. 2. 3. 4.

1. It reduces magnetic ham during its operation. 2. It prevents coffing 3. Both 1 & 2 are correct (*)

Current gain Voltage gain (*) Power gain Input impedance

28. A class B push pull amplifier has the main advantage of being free from

20. Rotor Rheostat control of starting torque can be applied in

1. 2. 3. 4.

1. Slip ring motors 21. Hysterisis motor rotor material used is 1. Chrome steel (*)

Any circuit imbalance Unneauted noise Even order harmonic distortion (*) DC magnetic saturation effects

29. The extremely high input impedance of a mosfet is primarily due to

22. The power factor of a series RLC circuit at is half power points is 1. 2. 3. 4.

Input voltage Duty cycle Transistor on time All of the above are correct (*)

1. 2. 3. 4.

Unity Lagging Leading Either 2 & 3 (*)

Absence of its channel Negative gate source voltage Depletion of current carries. Extremely small leakage current of its gate capacitor. (*)

30. In RC phase shift oscillator circuit 23. Current flow in a semi conductor depends an the phenomenon of 1. 2. 3. 4.

1. 2. 3. 4.

Drift Diffusion Recombination All of the above are correct (*)

There is need for feedback Feedback factor is less than unity Pure sine wave output is possible (*) Transistor parameters determine oscillation frequency.

31. A half adder can be constructed 24. A LED emits visible light when its 1. 2. 3. 4.

1. Two XNOR gates only 2. One XOR and one OR gate with their output connected in parallel 3. One XOR and one OR gate with their input connected din parallel. 4. One XOR and one AND gate (*)

PN junction is reversed biased Depletion region windows Holes and electrons recombine (*) PN junction becomes hot

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 32. An RTL logic family uses

4. Should be soldered for better connection (*)

1. Resistor diode 2. Resistor and transistor (*) 3. Resistor diode and transistor

40. The requirement of navigation light

33. Which is the fastest logic line currently available 1. TTL 2. High speed TTL 3. ECL (*)

2. 3.

34. CMOS logic family uses only 1. 2. 3. 4.

MOSFETS and resistors NMOS circuits MOSFETS (*) Bipolar transistor

4.

1. 2. 3. 4.

Across its X plates Across its Y plates To the horizontal amplifier To the trigger circuits

1. Length of the vertical deflecting plates 2. Distance between screen and deflecting plates 3. Deflecting voltage 4. Separation between Y Plates (*) 37. The direction of the rotating armature current in DC motor is decided by 1. Flemings left hand rule (*) 2. Faraday's law 3. Constant law

1. I and R 2. VI Sin φ 3. V2 × reactance 4. VI Cos φ 43. Shunt motor with load constant speeds depends upon 1. Eb (*) 2. Flux 44. More propogation delay time 1. 2. 3. 4.

38. Parallel LC resonant circuits provides Equal AC flow through L & C High impedance at certain frequency Number AC power All above are correct

High speed TTL (6 numbers) ECL (0.75 to 2 numbers) TTL (10 numbers) CMOS (Very less)

45. Alkaline batteries determined 1. 2. 3. 4.

39. The bonding jumpers which statement is wrong

1. Resistance should not exceed 0.003 Ω

1. MSI 2. LSI

116

state

of

Free gassing at the end of cycle Special gravity indication Voltage measurement (*) All above are correct

46. In RAM

2. Should be short as possible 3. To coat it with sealing coating to prevent corrosion

CORRECT ANSWER IS MARKED * AT END

Capacitor Inductor Capacitor and inductor All of the above (*)

42. Real power developed in circuit containing resistance and reactance

36. The deflection sensitivity of a CRT depends inversely on the

1. 2. 3. 4.

directly ahead through an are of 110° and green light at right side with a similar are of visibility A green light at the left side and red light of the right side from a point directly ahead through an arc of 110°. As in 1 and white light visible from the rear of the a/c through an arc of 140°. As in 1 and white light visible from the rear of the a/c through an arc of 70°.

41. Comp circuit with no power loss

35. The signal to be observed on the screen of an oscilloscope is applied 1. 2. 3. 4.

1. A red light at the left side from point

charge

REVISED OBJECTIVE QUESTIONS & ANSWERS 3. SSI (*) 4. All above are correct

55. Battery excess charges 1. 2. 3. 4.

47. The passive display is 1. 2. 3. 4.

LED LCD (*) CRO Gas discharge

56. Tumber switch are 1. 2. 3. 4.

48. Transformer at full load. Iron losses = 800 w considering maximum efficiency Ca losses at half load 1. 2. 3. 4.

800 w (*) 400 w 1600 w 200 w

1. 1 spark 2. 2 spark 3. 4 spark 58. Initially APU started by

1. Background of display is black 2. Scatler light in all direction (*) 3. All above are correct

1. Aircraft battery (*) 2. External power supply 3. APU battery

50. I, CRT, intensity is adjusted by

59. EICAS system is used display of fault

1. Cathode 2. 1st Anode 3. 2nd Anode 4. Negative grid control

1. 2 p display CRT used 2. Upside and downside 3. Side by side left side message form right side 60. Antiskid wheel locked signal is given by

51. False fire warning due to Moisture Due to dent and neck (*) Short circuit of element 1 & 2 are correct

1. 2. 3. 4.

52. Insulation used on wife for 400°F

Transducer Skid control sensor Sensor Sousing circuit

61. Equivalent resistance at A & B

1. PVC 2. Nylon 3. Silicon braided (*)

1. 2. 3. 4.

53. The heater of windshield are placed 1. Embedded (*) 2. Attached to window 3. Adjacent

3Ω 4.5 Ω 6 Ω (*) 9Ω

62. Storbe light statement

mark

most

correct

1. If operate on the principle of capacitor discharge in xenon tabe. 2. It is substitute to anticollision light. 3. If operates at flash frequency 70 per / min. 4. All above are correct

54. 'Drop Out' means 1. 2. 3. 4.

Togg'e Switch (() Micro Rush Rocker button

57. Magneto System spark / rev

49. In LCD display at dynamic scaltering type

1. 2. 3. 4.

100 % 120 % 140 % 180 % (*)

When contact open (*) When contact closed When coil attracted armature When core attracted armature

63. Ram is

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 1. Power factor 100% in circuit 1. Volatile 2. Non – Volatile 3. Data is stored by manufactured in manufacturing process 4. Data can be rewrite 64. MSI has (Medium Scale Integration) 1. 2. 3. 4.

1. π 2 (*)

10 – 100 Less than 30 100 – 1000 More than 10000

2.

back

emf

suddenly

4. Fuses material 1. 2. 3. 4.

67. Cable use of before and after fire Nyvin EFFGLASS EEPSIL None of the above

Tin Alloy of tin and bismuth Lead All of the above are correct (*)

5. SCR is used for 1. 2. 3. 4.

68. Pitot state tube Airspeed indicator Altimeter Vertical speed indicator OAT

Switch Rectifier Variable power output All above are correct

6. Maximum heat dissipation in rectifier 1. 2. 3. 4.

69. A generator having 40 kva and 0.8 PF KW 36 kw 32 kw 30 kw 140 kw

Anode Cathode Cu which form the cathode Surve as a heat sink and dissipater (*)

7. Low propagation delay 1. 2. 3. 4.

70. Junctions box is installed as open side should be

PTL ECL (*) DTL RTL

8. Passive display

Downside Upside Horizontal Vertical

1. 2. 3. 4.

FEBRUARY 1999

CORRECT ANSWER IS MARKED * AT END

π 3 4. π 3

1. Motor will stop (*) 2. Motor will burn 3. Motor will run

1. Square wire 2. Circular wire 3. Rectangular

1. 2. 3. 4.

2

3. Shunt motor disappear

66. Square mill used to

1. 2. 3. 4.

π

3.

1. Potentiometer and techogenerator 2. Potentiometer and servometer 3. Resistance

1. 2. 3. 4.

In phase (*) Current leading Current legging None of the above

2. In half wave rectifier form factor is

65. In electrical system position of valve and speed is indicates by

1. 2. 3. 4.

1. 2. 3. 4.

116

LED LCD (*) CRT Gas discharged

REVISED OBJECTIVE QUESTIONS & ANSWERS 9. Speed control of DC motor which method is used for good response 1. 2. 3. 4.

17. Which one of the following relay have maximum sensitivity

Flux control (*) Armature resistance control Tapped field Ward Leonard

1. 2. 3. 4.

10. Static discharge wicks

18. What is the use to neuloalised spillage of electrolyte from lead acid battery

1. Located at training edge of ailrons, elevators and redder 2. Reduce corona discharge effect on interferance of radio signal (*)

1. 2. 3. 4.

11. In which material permeability is less than one 1. 2. 3. 4.

Die magnetic < 1 (*) Fero magnetic >> 1 Para magnetic > 1 Non magnetic = 1

1. 2. 3. 4.

1. 2. 3. 4.

1. 2. 3. 4. delay

time

Size of plate Number of plate Electrolyte Both 1 and 2

21. The function of the circuit indicate in ATA 100 code

is

1. 2. 3. 4.

TTL 3 numbers ECL 0.3 numbers CMOS 7 numbers (*) High speed TTL 1.5 numbers

14. Transformer lamination have

Every month Every 3 month Every 6 month 100 hours (*)

20. Capacity of battery increased by

90° 180° 270° 360°

13. The propagation maximum

Vinegar Boric acid Ammonia (*) Bicarbonate of soda

19. When should be a nickle cadmium battery gives deep cycle treatment

12. In heartly oscillator, the phase shift between

1. 2. 3. 4.

Heavy duty relay Low duty relay Polarized relay (*) Sludged relay

1 2 (*) 3 4

OCTOBER 2003 1.

1. Low resistivity and high hysteresis 2. High resistivity and high hysteresis 3. High resistivity and low hysterisis (*) 15. In hysterisis motor rotor becomes a permanent magnet

In Lissajous patterns when signal applied across x – y plates of same frequency, amplitude and phase difference produced 1. Straight line having 45 degree angle to horizontal (*) 2. Straight line with 135 degree angle to horizontal 3. Circle with

1. Rotor speed lower than synch speed 2. Rotor speed higher than synch speed 3. Rotor speed rotate at synch speed (*) 2.

16. The ratio of true power to the apparent power of an AC circuit is known as 1. Power factor (*) 2. KW / KVA 3. KVA / KW

While handling NI-CAD battery, if the eyes contaminated with the KOH wash the eyes with 1. Carbolic acid 2. Plenty of water (*) 3. Weak boric acid

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 3.

Internal resistance of battery depends upon 1. 2. 3. 4.

4.

2. EACAM 3. FDAU 4. EFIS (*)

Plate area Distance between the electrodes (*) Electrolyte solution All the above are correct

11. In modern aircraft, all bytes measured on

Carbon resistors preferred than wire wound resistor because 1. 2. 3. 4.

High stability Low stray inductance Least the cost Low power (*)

1. 2. 3. 4.

BITE Box (*) BLACK Box TOOL Box None

12. In 3 pin external DC power supply connector 1. One of the positive pin is shorter (*)

5.

Protection of batteries provided for 13. In large aircraft, external power supply connector

1. Internal heating 2. Excessive environmental temperature 3. Overheating of battery leads 6.

1. 4th pin of large dia.

Resistance of 6 ohm and inductive reactance of 8 ohm connected in series to supply of 200 v. calculate voltage drop across 6 ohm resistance. 1. 2. 3. 4.

7.

14. Number of splice use between two connector

120 v (*) 150 v 200 v 100 v 3 Phase induction motor having rpm 1440 and rotor speed of 50 Hz. Calculate the slip

1. 2. 3. 4. 8.

50 60 (*) 100 40

15. When syn motor runs on lagging p.f., if the load is reduced p.f. becomes

1. 2. 3. 4.

Proximity Switch use for the purpose of

More lagging Less lagging Unity p.f. Near to the unity p.f.

CE (*) CB CC None

17. Highest current gain in

Landing gear operation Thrust reverser Cabin door All the above are correct (*)

1. 2. 3. 4.

10. All flight data reads on

CE CC (*) CB All

18. CMOS uses because,

1. EACAS

CORRECT ANSWER IS MARKED * AT END

1 (*) 2 3 4

16. Highest power gain in

1. Having common arm. and field winding 2. Having same arm. and different field winding 3. Mounted on same shaft. (*)

1. 2. 3. 4.

1. 2. 3. 4.

1. 2. 3. 4.

In Rotary inverter motor and generator

9.

2. 2 pins of short diameter 3. As in 2 and supplying interlocking relays 4. As in 3 and connect the external AC power to the aircraft (*)

1. Requires less power (*)

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. Low memory device 3. High speed 4. 1 & 2 are correct

2. Feedback supply to hold in circuit of the ground power unit 27. Mark the correct statement

19. In parallel operation of DC generator improper division of load because of

1. Essential services directly connected to battery bus bar 2. Generator bus bar are normally isolated

1. Voltage regulator adjustment is not properly balanced 2. Ground the field 3. Field open

28. Clorona effect is reduced by 1. Static discharger (*) 2. Coaxial cable

20. When, Alternator fails 1. Ammeter shows reverse current, busbar voltage equal to battery voltage 2. Alternator get disconnected by automatically

29. Brush wearing at high attitude due to 1. 2. 3. 4.

21. Cross – short is check by 1. 2. 3. 4.

Voltmeter Ammeter Ohmmeter (*) 1 & 2 is correct

30. In modern turbojet aircraft 1. Two batteries of are connected in series and in parallel during starting of engine 2. Only one battery switch is on and then connected in parallel 3. 48 volts is supply at the starting of the engine by connecting the batteries in series and then 24 volts is applied by connecting batteries in parallel (*)

22. When, input to megger is off, pointer goes to 1. 2. 3. 4.

Friction between commutator and brush Static electrical charge due to friction Contact resistance is negligible All of the above are correct (*)

Extreme LII (*) Extreme RII Centre position Any where position

31. When operating temperature is low, lead – acid battery capacity,

23. Cutout of AVO operated by 1. 2. 3. 4.

1. Capacity decrease (*) 2. Reduce electrolyte 3. Discharge

Electrically Mechanically Electromagnetically (*) Pneumatically

32. Advantage of constant charging on aircraft

voltage

24. Negative relief valve operated by 1. 2. 3. 4.

1. Protection against excessive gassing 2. Reduced time (*) 3. Reduced capacity

Pneumatically Electrically Hydraulically Magnetically

33. Mark the correct statement, antiskid autobrake system

25. The purpose of the 'Dump valve' in a pressurized aircraft is to relieve

1. 2. 3. 4.

1. All the positive pressure from the cabin 2. A negative pressure differential 3. Pressure in excess of the maximum differential 26. External power connected to

'TRU'

Automatic Touchdown Deaccleration rate is less than manual All above are correct (*)

34. Window heat sensor

supply

1. Embedded in glass (*) 2. Touching with glass

1. DC relays and DC consumers

35. Mark the correct statement

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 3. Secondary anode at negative potential 1. Class 'D' connector is of fire proof type 2. Class 'A' is

44. Voltage amplification of amplifier

36. In part number of connector AN18A-10 'A' indicates, 1. Class of connector 2. Type of connector 3. General utility usage (*)

45. Maximum voltage drop across the cable connected between generator and battery to any component should not exceed.

37. In electrical system which diagram shows one or more than one 1. Wiring diagram 2. Schematic diagram (*) 3. Routine chart 38. Smoke detector used in cargo 1. Photo electric cell (*) 2. Sniffer

1. 2. 3. 4.

1. Lenz's law (*) 2. Fleming's left hand rule 3. Faraday's law

1. 2. 3. 4.

Active Passive (*) Bilateral Unilateral

Chmige Potential difference (*) Dielectric material Capacitance

48. Mark the correct statement

41. Capacitance can be measure with the help of, 1. Schering bridge (*) 2. Hay's bridge 3. Maxwell's bridge 42. Transformer of having 2000 turns on primary supply with 250 volts, induced voltage in secondary of 200 volts. Calculate the secondary turns

1. Compensating winding is connected in series with interpole 2. Compensating winding is connected in with armature and parallel with interpole 3. Compensating winding is connected in series with armature winding and interpole (*) 49. Calculate the energy store in inductor, having inductance of 10 mH and current of lamp 1. 2. 3. 4.

1600 (*) 1900 2000 1500

160 mj 80 mj (*) 160 joules 1600 joules

50. Insulation resistance used above 400 degree centigrade.

43. Intensity control of CRO is done by 1. Negative potential of grid (*) 2. Cathode of CRO

CORRECT ANSWER IS MARKED * AT END

High voltage machine Low voltage machine (*) Loc current machine High current and low voltage

47. If the capacitor charge and then halved it which factor will affects,

40. Network containing no source of emf is

1. 2. 3. 4.

1. 2 % of regulated voltage of the generator or battery when the battery discharge at 5 minute rate 2. 2 % of regulated voltage of the generator or battery when the battery discharge at 1 hour rate. (*) 3. 10 % of regulated voltage of generator 46. Lap winding is used for

39. 'Slug' relay operated on the principle of

1. 2. 3. 4.

1. Large load 2. Small

1. Braided wire 2. PVC

116

REVISED OBJECTIVE QUESTIONS & ANSWERS 3. Fibre glass (*) 4. Silicon rubber

58. Instrument used bonding in a/c

51. Asymmetrical waveform rms value calculated over 1. 2. 3. 4.

1. 2. 3. 4.

Full cycle Half cycle (*) Two cycle Three cycle

52. Time current characteristics protection devices

of

Bonding tester Ohm meter with wire and battery Ammeter and battery 1 & 2 are correct (*)

1. To reduce iron loss 2. To improve p.f. 3. To improve η 60. Material of pole shoes are of 1. 2. 3. 4.

53. To test generator or motor windings for opens 1. Place armature in growler and connect a 110 v test on adjacent segment light should light. (*) 2. Check adjacent segment on commutator with an ohmmeter on high resistnce scale 3. Used a 12/24 v test light between the armature core segments and shafts

Laminated sheet Laminated sheet (*) Cast iron Thin soft iron lamination

61. If

load kept constant increased then η will

and

p.f.

1. Increase 2. Decrease 3. Remains constant 62. In generator field winding consists

54. In fire detection system, false fire warning due to,

1. Thick wire carrying for low current 2. Thin winding and high current 3. Thin winding and low current (*)

1. Improper routing or clamping the system 2. Moisture 3. Dents or kinks or crushed sensor sections (*) 4. 2 & 3 are correct

63. Fleming left hand rule middle finger indicates 1. Direction of current 2. Direction of rotor 3. Direction of flux (*)

55. In inductor 'A' of air core and 'B' iron core then inductance in 'B' is More (*) Same Less Not affected

64. For measuring insulation resistance megger consist of 1. 2. 3. 4.

56. Capacity of choke input filter is for 1. Current smothering action 2. Voltage smothering action 3. As in 1 & 2 are correct

Moving coil galvanometer Voltmeter and ammeter coil (*) Ohm meter and ammeter Ohm meter

65. Fuses and C.B. are used 1. Hear loads 2. Hear bush bar 3. Between bush bar and load

57. Ohm is used for measurement of 1. 2. 3. 4.

measuring

59. Why the rotor bars of induction motor is placed deeper into the rotor

1. Above the wire capacity 2. Below the wire capacity (*) 3. As close as possible to the wire capacity

1. 2. 3. 4.

for

Resistance Inductive reactance Capacitive reactance All above are correct (*)

66. Relay contact get heated, due to 1. Low contact pressure (*)

115

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 3. Reducing flame. 4. None of the above.

2. Low voltage 3. Low current 67. Which instrument is used to measure high frequency low current measurement 1. 2. 3. 4.

Electromagnetic ammeter Moving coil galvanometer (*) Thermostat type instrument Induction type instrument

68. Moving coil instrument is used to measure

R001. Rockwell tester measures Resistance to penetration and depth. * Diameter of impression. Size of indentation. All of the above are correct.

R002. P-N Junctions used as 1. 2. 3. 4.

To be used Borescope. To be used Fiberscope. To be used Endoscope. All of the above are correct. * Radiography depends on

1. 2. 3. 4.

Size and shape of the job. Thickness of Materials. X-ray. All of the above are correct. *

1. Number of teeth per inches on pitch diameter. 2. Size of the gear teeth. 3. As in (1) & (2) are correct. * 4. None of the above is correct.

R003. In PNP transistor

R010. Hand reamer is used to

to to to to

R004. Cleaning of titanium spares by 1. Steel or steel wool. 2. Iron scrapers. 3. Mild abrasive or hands polish with aluminum. * 4. None of the above. R005. Aluminum alloy are welded with

1. Remove small amount of materials and expand a hole. 2. As in (1) and is turned with tap wrench. * 3. Make an undersize or oversize hole to correct size. 4, All of the above are correct. R011. At absolute zero temperature, an intrinsic semiconductor will act as 1, 2. 3. 4.

Insulator. * Super conductor. Neutral. None of the above.

R012. In semiconductor depletion zone

1. Oxidizing flame. 2. Neutral flame. * CORRECT ANSWER IS MARKED * AT END

1. 2. 3. 4. R008.

R009. The diametric pitch indicates

Rectifier or Non return valve. * Oscillator. Amplifier. None of the above.

1. Flow of electrons from emitter base. 2. Holes moves from collector emitter. 3. Flow of electrons from base emitter. 4. Flow of electrons from emitter base. *

1. Reducing space charge. 2. Prevents secondary emission. 3. It increases emission of electrons from cathode to plate. * 4. Control electron flow from plate to cathode. R007. To check interior surface condition of cylinder & surface

1. Low frequency AC signal 2. High frequency AC signal 3. Both AC and DC signal (*)

1. 2. 3. 4.

R006. In triode grid

1. Has positive holes pairs. 2. Has negative electrons pairs.

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REVISED OBJECTIVE QUESTIONS & ANSWERS 3. Has neutral electron-hole pairs. * 4. None of the above is correct. R013. Internal barrier semiconductor

potentials

3. Gray and white are used as decimal multipliers for very small values. 4. All of the above are correct. *

in

1. Increases with higher temperature. 2. Decreases with higher temperature.* 3. No change with temperature rise.

R019. When temperature is lowered from room temperature to 50 0 K, resistance of Ge & Si semiconductor will 1. 2. 3. 4.

R014. Mark the correct statement 1. Silicon semiconductor has zero reverse current with reverse voltage. 2. Germanium semiconductor has zero reverse current with reverse voltage 3. Varactor diode is used for electronic tuning. 4. As in (1) and (3) are correct. * R015. Mark the correct statement 1. Tunnel diodes are also called ‘Esaki diodes’. 2. Tunnel diodes have heavy doping. 3. In tunnel diodes, current decreases with increase voltage and used as an amplifier or oscillator. 4. All of the above are correct. * R016. In Light Emitting Diodes (LED) 1. Gallium (Ga) is used for best efficiency. 2. Have several colors depending on the materials are used in the chip. 3. Have high current consumption than LCD. 4. All of the above are correct. * R017. Liquid crystal displays (LCD) are 1. Dynamic scattering. 2. Field effect type. 3. Dynamic scattering type produces frosty white letters on dark background and field effect type produces black letters on silvery background. 4. All of the above are correct. *

Both increase. * Both decrease. Ge decreases, Si increases. Si decreases, Ge increases.

R020. To check external threads 1. 2. 3. 4. R021.

Thread gauge is used. Ring gauge is used. * Plug gauge is used. None of the above is correct. A modern computers executes

1. One instruction at a time. 2. Millions of instructions at a time. 3. Millions of instructions in a second not at a time. * 4. None of the above is correct. R022. In metal spraying process 1. Metal is sprayed on copper / Nickel. 2. Metal is sprayed on solid surface. 3. Al / Cu / Ni are sprayed on the metal to improve corrosion resistance. * 4. None of the above is correct. R023. To improve corrosion resistance, pure aluminum is coated on both side of alloy is known as 1. 2. 3. 4.

Al-clad. Pure clad Both (1) and (2) are correct. * None of the above is correct.

R024. The file used to make keyways and slots is 1. 2. 3. 4.

R018. Capacitor color coding uses 1. In mica capacitor six-dot systems. 2. In Tubular ceramic capacitor color dots or bands.

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Half round file. Triangular file. Square file. * Knife file.

CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS R025. If drill size is not mentioned on the drill, then it is measured by 1. A drill gauge with fractions towards the left & decimal towards the right 2. A drill gauge with fractions towards the right & decimal towards the left. * 3. A hole gauge or SWG. 4. None of the above is correct.

1. A diamond cone & spherical ball is used on material softer than C-20. 2. For softer materials. 3. If the hardness scale overlaps top of ‘B’ scale & bottom of ‘C’ scale, ‘C’ scale set up is used. * 4. None of the above is correct. R027. CPU of computers consist of

R032. A formed rivet is removed by 1. Center punch with drilling a hole slightly smaller than shank diameter. 2. Center punch with drilling a hole slightly greater than shank diameter. 3. Using flat chisel, chop off the head 4. As in (1) and (2) are correct. * R033. The most commonly used insulating material for an aircraft is

Input and output. Memory. ALU and Control unit. Both (2) and (3) are correct. *

1. 2. 3. 4.

R028. In work shop, parallel bars are used to

Nylon & cotton base. Rubber & silk base. Teflon. * As in (1) and (2) are correct.

R034. In aircraft bonding & screening is done to

1. Lift the Jobs. 2. To mark the job parallel line. 3. To level the work piece. 4. Both (1) and (3) are correct. * R029. In a rheostat 1. Both end terminals are used to vary the resistance. 2. The middle and end terminals are used to vary the resistance with jockey in contact. * 3. All three terminals used to vary the resistance. 4. Only one terminal is used to vary the resistance. R030. Tapered roller bearing 1. Take axial & radial loads simultaneously in one direction. * 2. Take heavy axial & moderate radial loads in either direction. 3. Take axial load only. CORRECT ANSWER IS MARKED * AT END

R031. In an air lock fastener the material it can withstand is 1. Inscribe on the head of the stud in 1000 of an inch. * 2. Stamped on the stud receptacle. 3. No marking available. 4. None of the above is correct.

R026. In Rockwell hardness tester

1. 2. 3. 4.

4. None of the above is correct.

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1. Prevent static charge accumulation. 2. Prevent radio frequency interference. 3. Eliminate ground wiring. 4. All of the above are correct. * R035. Ice box rivets, if not riveted in the prescribe time, can be 1. Rejected. 2. Re-heat treated once. 3. Re-heat treated for maximum of 3 times. 4. Re-heat treated any number of times. * R036. When a weld structure is cooled 1. The strength can be improved by hammering. *

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. Hammering will destroying the joint. 3. As in (1) when prescribe in drawing. 4 None of the above is correct.

4. None of the above is correct. * R042. The strength of 18-8 steel can be increased by

R037. In lead acid cell

1. 2. 3. 4.

1. The positive plates are made of lead di-oxide(PbO2) and negative plate is pure spongy lead. * 2. The positive plates are made of lead per-oxide (PbO) and negative plate is pure spongy lead. 3. The electrolyte H2SO4 does not take chemical reaction while charging & discharging. 4. As in (2) and (3) are correct.

R038. An alternating voltage supplied to the face of the crystal is converted to sound wave 1. Known as Piezo-electric effect. 2. Electromagnetic effect. 3. As in (1) and frequency depends on the thickness of the crystal. * 4. As in (1) and frequency depends on the applied voltage.

R43.

R044. After swaging procedure, it is found that the thickness of the sleeve is reduced 1. It shows correct swaging is done. 2. It is over swaged and job must be discarded. * 3. Open out and re-swaging to be done 4. None of the above is correct. R045. Hawks bill snips are used to

1. Cut internal curves and radii. * 2. Cut external curves and radii. 3. As in (1) and (2) are correct. 4. None of the above is correct. R046. OR gate gives an out put when 1. Any one of the input is energized.* 2. None of the input is energized. 3. All of the inputs are energized.

R040. Bevel gear are used for 1. Transmitting motion between shafts inclined at the angle each other. * 2. Taking heavy load with low speed. 3. Speed reducer. 4. All of the above are correct. R041. In an ideal transformer 1. Energy loss is caused by core. 2. Copper loss is caused by conduction 3. Eddy current loss by magnetization.

The filler material in composite material improves

1. The pot life, strength and make resin application easier. * 2. Shelf life and strength. 3. Curing is faster. 4. All of the above are correct.

R039. Mark the correct statement for radiography of X-ray 1. They don’t travel in straight line. 2. They don’t destroy living cells. 3. They heat the metal on which they fall. 4. They can’t be reflected & refracted. *

Heat treatment only. Hot working only. Cold working only. * None of the above is correct.

R047. Shank of the Hand reamer is

1. Square in shape. * 2. Hexagonal in shape. 3. Straight and taper. 4. None of the above is correct. R048. XOR gate denoted in Boolean equation is ______ 1. A + B

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CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. A. B 3. A B.* 4. None of the above is correct.

R056. Rocker arm and pin diameter is measured by 1. Telescopic gauge. 2. Micrometer. * 3. Hole gauge.

R049. Which of the following Boolean algebra equation is not the correct? 1. 2. 3. 4.

A + A. 0 A + A. 1

B = 0 =

R50.

AN steel fitting color is

1. 2. 3. 4. R051.

Black. * Blue. Green. None of the above is correct. H2So4 is neutralized by

1. 2. 3. 4.

R057. Current flowing through parallel conductors

= B + A 0. = A. 0. *

1. Current in same direction repels each other. 2. Current in same direction attract each other. * 3. Current in opposite direction will attract each other. 4. Current in opposite direction will repel each other. R058. A chisel is used to

Sodium bicarbonates. Ammonia. Potassium hydroxides. As in (1) and (2) are correct. *

1. Cut hardened steel. 2. Cut any materials softer than it. * 3. As in (1) and (2) are correct. R059. While replacing a tyre where one wheel has to be raised

R052. Close tolerance bolt is identified 1. 2. 3. 4.

By triangle with centre cross. * By Circle with centre cross. By cross. None of the above is correct.

1. A single jack is used. 2. Other wheel must be chocked fore and aft. 3. The wheel should be only high enough to clear the ground. 4. All of the above are correct. *

R053. I beam is manufactured by 1. 2. 3. 4.

Extrusion. Drawing. Cold working. None of the above is correct. *

R060. The Diode and Triode 1. Act as an amplifier & rectifier respectively. 2. Converts AC to DC and increase magnitude of alternating current respectively. * 3. Both (1) and (2) are correct. 4. None of the above is correct.

R054. 7075 major alloy element is 1. 2. 3. 4.

Copper Magnesium. Zinc. * None of the above is correct.

R061. Mark the correct statement for pure semiconductor

R055. If weld is made quickly (wet flux) 1. 2. 3. 4.

Cracking will occur. Porosity will occur. * Pitting will occur. All of the above is correct.

CORRECT ANSWER IS MARKED * AT END

two

1. They are poor conductor of electricity. 2. Ohms law does not hold true for them.

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REVISED OBJECTIVE QUESTIONS & ANSWERS 3. They do not have large number of free electron. 4. All of the above are correct. *

R067. Under the action of electric forces in an electric field, mark the correct statement.

R062. Conductivity is increased of pure semiconductor by

1. Positive charge flow from lower to higher potential. 2. Negative charge flow from higher to lower potential. * 3. Charge flow lower to higher potential 4. Positive charge can flow from any potential to provide electric field equal.

1. Doping is done. 2. No impurities are added. 3. Impurities deliberately added. 4. Both (1) and (3) are correct. * R063. The electric lines of force 1. Can never intersect each other. * 2. Always try to expand along their length. 3. Attract each other laterally. 4. Can exit inside a conductor.

R068. Mark the correct statement. 1. Turnbuckle ends are normally made from cadmium plated steel. 2. Turnbuckles barrels are normally made of steel. 3. Turnbuckle ends may be of cable eye, pin eye and fork eye. * 4. As in (1) and (3) are correct.

R064. In case of current induced by magnet, the strength of induced current increases 1. With decrease in area & number of turn of the coil. 2. With increase in relative motion of the coil. 3. With decrease in area and increase in number turn of the coil. 4. As in (2) and (3) are correct. * R065. Clevis bolt is used for 1. Shear loads only and require a shear nut. * 2. Tensile loads and require a self locking nut. 3. Any type of load and require any type of nut. R066. The heat treatment method of tempering depend on 1. 2. 3. 4.

Type of steel. Size and shape of the metals. The purpose to be used. All of the above are correct. *

R069. If sealer from heat treated steel parts on dirt accumulation on it, this may be cleaned by 1. 2. 3. 4.

Sand blasting. Wet blasting using liquid abrasive. Wire brash and scraper. All of the above are correct. *

R070. On a machine drawing, the characteristic of a surface is specified by 1. 2. 3. 4.

Proper dimension. * Limits and tolerance. Fringe pattern. None of the above is correct.

R071. Common drilling machine perform 1. Hole drilling. 2. Reaming and spot facing. 3. Counter sinking. 4. All of the above and also tapping & lapping. * R072. Cutting speed of drilling means 1. Speed of circumference.

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CORRECT ANSWER IS MARKED * AT END

REVISED OBJECTIVE QUESTIONS & ANSWERS 2. The distance that drill would roll if placed on its side. 3. RPM of the drill bit. 4. Both (1) and (2) are correct. * R073. The thickness of gear teeth is measured

1. At a point where the pitch circle of the gear cross the tooth. * 2. By vernier caliper. 3. By Micrometer. 4. Both (2) and (3) are correct. R074. The mutual inductance between two coils is 1. Flow linked with one when current in the other is unity. 2. EMF induced is one when the current in the other is unity. 3. EMF induced in the coil when the current through the coil itself changes. 4. As in (1) and (2) are correct. *

CORRECT ANSWER IS MARKED * AT END

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