Module 5-1
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MODULE 5 QUESTIONS B1 Q. The resolution of a DAC depends on the number of bits used in the conversion process—the more bits the greater the resolution. Typical DAC have resolutions of 8, 10 or 12 bits Q. ACARS signals are transmitted at: (a) HF in the range 11 MHz to 14 MHz (b) VHF in the range 118 MHz to 136 MHz (c) UHF in the range 405 MHz to 420 MHz. Q. In a static memory circuit: (a) the memory is retained indefinitely (b) the memory is lost as soon as power is removed (c) the memory needs to be refreshed constantly, even when power is on. Q. Option selectable software (OSS) can be found in 1.EEC, DFDAU 2.IFE, ACMS 3.IMA Q. Which one of the following devices is most susceptible to damage from stray static charges: (a) VLSI microprocessor/MOFET transistor (b) Bi-polar junction transistor (c) SCR Q. which of the following gives the order pf precedence of VHDL operators(highest first) 1.Logical; Relational; shift 2. Relational; Logical; shift 3. Shift; Relational; shift Q. which of the value gives the range of Unsigned byte? 1. 0 to 255 2. −128 to +127 3. 0 to 65,535 Q.The potential at the gird of a CRT is: (a) the same as the cathode (b) negative with respect to the cathode (c) positive with respect to the cathode. Q.The three beams in a colour CRT are associated with the colours: (a) red, yellow and blue (b) red, green and blue (c) green, blue and yellow. Q. The main advantage of using a serial bus in an aircraft is: (a) there is no need for data conversion
(b) it supports the highest possible data rates (c) reduction in the size and weight of cabling. Q. user modifiable software(UMS) can be modified by whom? 1.Aircraft operator 2.Design organisation 3.Manufacturer. 4.Any of the above Q.OSS (option selectable software) can be modified by whom? 1.Aircraft operator 2.Design organisation 3.Manufacturer. 4.Any of the above Q. Logic gates will only produce a logic 1 output when all inputs are simultaneously at logic 0? 1.NAND 2.NOR 3.X-NOR 4. OR Q. The logical function of a combinational logic circuit can be described by a 1.Truth table 2.Boolean algebra 3.Both 1 & 2 Q. The aircraft integrated data system (AIDS) collects and records operational data to permit detailed analysis of 1.aircraft performance 2.maintenance requirements 3.Both 1 & 2 Q. B777 incorporates 1.Honeywell AIMS 2.AIRBUS Q. The basic analogue to digital converter (ADC) has -- a single analogue input and a number of digital outputs Q. The required parallel-to-serial and serial-to-parallel data conversion is carried out by a bus interface using self-clocking ---asynchronous Q. Grounding and bonding resistances of less than ---0.001 OHM to 0.003 OHM are usually required. Q. The functions or capabilities of BITE include the following: 1.real-time, critical monitoring 2.module and/or subassembly failure isolation 3.go/no-go alarms 4. All the above
Q. convert 65535 into hexadecimal 1.FFFF 2. FADF 3. FDFF Q. When compared with an LCD, a CRT display offers the advantage that: (a) the resolution and focus is better (b) it can be viewed over a large angle (c) it uses low voltages and is more energy efficient.
Q.A method used in modern aircraft for reporting in-flight faults to an engineering and monitoring ground station is: (a) TCAS II (b) ACARS (c) GPS. Q. ARINC 429 can connect number of receiver in single bus 1.20 Receivers 2.120 3.180 Q. ARINC 629 can connect number of receiver 1.20 Receivers 2.120 3.180 Q. ARINC 429 data word range (it has 32 bits) 1. five Primary field 2.four field 3.Primary field Q.A software Configuration Management Plan (CMP) must be created and maintained by: (a) the CAA or FAA (b) the aircraft operator (c) the relevant DO. Q. When compared with TTL devices, CMOS logic devices use: (a) less power and have lower noise immunity (b) more power and have lower noise immunity (c) less power and have higher noise immunity. Q. The noise margin for standard TTL devices is: (a) 400 mV (b) 800 mV (c) 2 V.
1.Mode of ACARS in which pilot initiates the message 1.Air mode 2. Demand mode 3. Poll mode 2.Required level of humidity in ESD Shop 1.50-70% 3.The pilot gets an aural warning when the aircraft reaches decision height 1. 50Ft before the predetermined DH 1. 20Ft before the predetermined DH 1. 50Ft before the set DH 1. 20Ft before the set DH 4.which filter is 1.Low pass filter 2.High pass filter 3.Low resistance 4.High resistance
used to reduce the voltage
5.which filter is used while converting digital to analogue? 1.Low pass filter 2.High pass filter 3.Both 6.DFDR has the capability to 1.Decode 2. Encode Q.DFDR---Convert analogue to digital Q.Basic instruments to get input from ADS? --HIS,AS,ROC,VSI,VOR,RMI Q. 7.Capacity of double coated DVD-ROM? 8.What is reaction time in fibre optics 1.Time taken to produce a light signal once the source device has received electrical signal. 2.Time taken to produce a electrical signal once the source device has received the light signal. the light signal. 3.Vice versa. 9.Critical angle (fibre optics) definition 10. In fibre optics__________interference_____susceptibility 1.Less, Less 2.High,High 3.Less,High 4.High less 11.EMC
12.Extra voltage produced due to 1.ESSID 2.EMI 3.EMC Q. which of the following is on the Negative triboelectric---1.Polyster 2. glass 3. silk 12.How heading 320deg is independent in 429 13.Convert 23.6 to binary? 14.Convert 9F2 to binary? 15.Bistable device has how many stable states? 1.2 states 0 & 1 2.one 3.zero 4.NOTA Q. component damage easily due to static electricity are? ---Static sensitive device Q. Devices that are more prone to damage tend to those are based on the use of 1.Field effect technology 2.Magnetic tape 3. Rectifier Q. what has pronounced effect on static system? ----Dry weather Q. Level A SOFTWARE classification------Catastrophic failure Q. ESDS soldering iron use ---Low voltage antistatic with grounded bits. Q.ESDS—Ground to low strength wire Q.ESDS highest protection---Conductive materials Q.ESDS---Dry air Q.which device is affected much by ESDS? 1.MOS 2.OP-amp 3.Field 4.diode Q. Rectifier---Cathode
Q. which control the function of deflecting electron beam? 1.cathode 2.anode 3.hotizontal plate 4.all Q. Memory location---Address bar Q.RAM—Volatile Q.ROM---Non-volatile Q. Ray entering from the edges with 1.Take longer path travel faster 1.Take short path travel slow 1.Take longer path travel slow 1.Take short path travel faster Q. Type of communication used to send message ground from aircraft? ---ACARS Q. If more bits are used in digital to analogue converter its resolution? ---Increases Q.In electronic control unit, voltage regulation regulate 1.Position 2.speed 3.Transient Q.SCR known as ----Thyristor Q. Components of computer ---CPU,RAM & I/O Q. In a microprocessor data can be expressed using? ---Hexadecimal Q. IC are made of---Silicon Q.LED used as ---Power indicator Q. Disadvantage of LED? ---Low reverse current
Q. convert 472 octal in binary? Q. Logical function of a combined logic circuit can be described by 1.Truth table 2.Boolean algebra 3.Bot 1 &2 Q .Cache memory---DRAM
16.Optical fibre
1. Robust 2 . Reliable 3.Less weight 4.All
Q. which one is the advantage of optical fibre ? ---Single wire can handle 100 connectors Q. Optical fibre benefit 1.one optical fibre can carry data to 100 of wire. 2.reduce weight
17.Target for option selectable software? --IMA 18.RAM doesn’t use tape because --Slow (Acess time is longer) Q.RAM-Loss of power— ----Data lost Q .volatile memory lost when power disconnect Q.ROM-----Can only be read not write. 19.XNOR 20.NAND Q.An AND gate is equal to ---Series circuit 21.Anti-static –Cotton Q. A 7 segment LED display segment’s A, B, C, D & G illuminated. The characters displayed will be 1.two 2. three 3.4four 4. five
23.EPROM 1.Can only be programmed by manufactures 2.By user 3.Both 24.ARINC429 is 1.Bi directional 2.Unidirectional Q. serial bus buffer---Bi-directional.
Q.ILS deviation---white to amber Q. Decesion height---white to amber Q. DH-----EADI Q. Q. Convert FFFF into binary? Q. A group of data sent one after another in ----Serial data Q. Diode arrow indicate—Hole current. Q.No. of bit in a byte? ---8 Q. Opcode in computer system 1.Decimal code 2.BCD 3.binary code 4.set of instruction. 26.Mask programmable—ROM Q. EICAS provide the following information 1.Engine parameter only 2.Engine parameter and system warning 3.Engine parameter and navigational data Q. Use of MOS ---In voltage regulator
Q. Grounding & bonding can also be minimised by the effects of ---HIRF
Q. Modifiable software can be upgraded by 1.operator 2.designer 28.Advantage of LCD over CRT? --Large viewing angle Q. The fastest data converter? ---Flash Q. Smaller function in semiconductor devices are susceptible to damage due to ---Electrostatic
Q.1011.11 to decimal---11.75 Q. SRAM & DRAM ---DRAM must be refreshed periodically. 29.(428)8---- (100111010)2 Q. what are the mode of ECAM---Four display mode( 3 auto, 1 manual) Q. Parts of EFIS Q. which bus provide timely & control signal throughout the system? ---Control bus Q.GPS consist of --Space, User , control Q. Logic device that produces a binary O/P Q. Advantage of different bus in bus system? Q.Rigidity---All Q. fibre Optic connector has 1.alignemnet key -Plug groove 2.Guided pin & cavities 3.Both Q.Covert 10011.1 into decimal. 1.6.125 2.6.001 3.6.12 4.6.876
(b) it supports the highest possible data rates (c) reduction in the size and weight of cabling. Q. user modifiable software(UMS) can be modified by whom? 1.Aircraft operator 2.Design organisation 3.Manufacturer. 4.Any of the above Q.OSS (option selectable software) can be modified by whom? 1.Aircraft operator 2.Design organisation 3.Manufacturer. 4.Any of the above Q. Logic gates will only produce a logic 1 output when all inputs are simultaneously at logic 0? 1.NAND 2.NOR 3.X-NOR 4. OR Q. The logical function of a combinational logic circuit can be described by a 1.Truth table 2.Boolean algebra 3.Both 1 & 2 Q. The aircraft integrated data system (AIDS) collects and records operational data to permit detailed analysis of 1.aircraft performance 2.maintenance requirements 3.Both 1 & 2 Q. B777 incorporates 1.Honeywell AIMS 2.AIRBUS Q. The basic analogue to digital converter (ADC) has -- a single analogue input and a number of digital outputs Q. The required parallel-to-serial and serial-to-parallel data conversion is carried out by a bus interface using self-clocking ---asynchronous Q. Grounding and bonding resistances of less than ---0.001 OHM to 0.003 OHM are usually required. Q. The functions or capabilities of BITE include the following: 1.real-time, critical monitoring 2.module and/or subassembly failure isolation 3.go/no-go alarms 4. All the above
Q. convert 65535 into hexadecimal 1.FFFF 2. FADF 3. FDFF Q. When compared with an LCD, a CRT display offers the advantage that: (a) the resolution and focus is better (b) it can be viewed over a large angle (c) it uses low voltages and is more energy efficient.
Q.A method used in modern aircraft for reporting in-flight faults to an engineering and monitoring ground station is: (a) TCAS II (b) ACARS (c) GPS. Q. ARINC 429 can connect number of receiver in single bus 1.20 Receivers 2.120 3.180 Q. ARINC 629 can connect number of receiver 1.20 Receivers 2.120 3.180 Q. ARINC 429 data word range (it has 32 bits) 1. five Primary field 2.four field 3.Primary field Q.A software Configuration Management Plan (CMP) must be created and maintained by: (a) the CAA or FAA (b) the aircraft operator (c) the relevant DO. Q. When compared with TTL devices, CMOS logic devices use: (a) less power and have lower noise immunity (b) more power and have lower noise immunity (c) less power and have higher noise immunity. Q. The noise margin for standard TTL devices is: (a) 400 mV (b) 800 mV (c) 2 V.
1.Mode of ACARS in which pilot initiates the message 1.Air mode 2. Demand mode 3. Poll mode 2.Required level of humidity in ESD Shop 1.50-70% 3.The pilot gets an aural warning when the aircraft reaches decision height 1. 50Ft before the predetermined DH 1. 20Ft before the predetermined DH 1. 50Ft before the set DH 1. 20Ft before the set DH 4.which filter is 1.Low pass filter 2.High pass filter 3.Low resistance 4.High resistance
used to reduce the voltage
5.which filter is used while converting digital to analogue? 1.Low pass filter 2.High pass filter 3.Both 6.DFDR has the capability to 1.Decode 2. Encode Q.DFDR---Convert analogue to digital Q.Basic instruments to get input from ADS? --HIS,AS,ROC,VSI,VOR,RMI Q. 7.Capacity of double coated DVD-ROM? 8.What is reaction time in fibre optics 1.Time taken to produce a light signal once the source device has received electrical signal. 2.Time taken to produce a electrical signal once the source device has received the light signal. the light signal. 3.Vice versa. 9.Critical angle (fibre optics) definition 10. In fibre optics__________interference_____susceptibility 1.Less, Less 2.High,High 3.Less,High 4.High less 11.EMC
12.Extra voltage produced due to 1.ESSID 2.EMI 3.EMC Q. which of the following is on the Negative triboelectric---1.Polyster 2. glass 3. silk 12.How heading 320deg is independent in 429 13.Convert 23.6 to binary? 14.Convert 9F2 to binary? 15.Bistable device has how many stable states? 1.2 states 0 & 1 2.one 3.zero 4.NOTA Q. component damage easily due to static electricity are? ---Static sensitive device Q. Devices that are more prone to damage tend to those are based on the use of 1.Field effect technology 2.Magnetic tape 3. Rectifier Q. what has pronounced effect on static system? ----Dry weather Q. Level A SOFTWARE classification------Catastrophic failure Q. ESDS soldering iron use ---Low voltage antistatic with grounded bits. Q.ESDS—Ground to low strength wire Q.ESDS highest protection---Conductive materials Q.ESDS---Dry air Q.which device is affected much by ESDS? 1.MOS 2.OP-amp 3.Field 4.diode Q. Rectifier---Cathode
Q. which control the function of deflecting electron beam? 1.cathode 2.anode 3.hotizontal plate 4.all Q. Memory location---Address bar Q.RAM—Volatile Q.ROM---Non-volatile Q. Ray entering from the edges with 1.Take longer path travel faster 1.Take short path travel slow 1.Take longer path travel slow 1.Take short path travel faster Q. Type of communication used to send message ground from aircraft? ---ACARS Q. If more bits are used in digital to analogue converter its resolution? ---Increases Q.In electronic control unit, voltage regulation regulate 1.Position 2.speed 3.Transient Q.SCR known as ----Thyristor Q. Components of computer ---CPU,RAM & I/O Q. In a microprocessor data can be expressed using? ---Hexadecimal Q. IC are made of---Silicon Q.LED used as ---Power indicator Q. Disadvantage of LED? ---Low reverse current
Q. convert 472 octal in binary? Q. Logical function of a combined logic circuit can be described by 1.Truth table 2.Boolean algebra 3.Bot 1 &2 Q .Cache memory---DRAM
16.Optical fibre
1. Robust 2 . Reliable 3.Less weight 4.All
Q. which one is the advantage of optical fibre ? ---Single wire can handle 100 connectors Q. Optical fibre benefit 1.one optical fibre can carry data to 100 of wire. 2.reduce weight
17.Target for option selectable software? --IMA 18.RAM doesn’t use tape because --Slow (Acess time is longer) Q.RAM-Loss of power— ----Data lost Q .volatile memory lost when power disconnect Q.ROM-----Can only be read not write. 19.XNOR 20.NAND Q.An AND gate is equal to ---Series circuit 21.Anti-static –Cotton Q. A 7 segment LED display segment’s A, B, C, D & G illuminated. The characters displayed will be 1.two 2. three 3.4four 4. five
23.EPROM 1.Can only be programmed by manufactures 2.By user 3.Both 24.ARINC429 is 1.Bi directional 2.Unidirectional Q. serial bus buffer---Bi-directional.
Q.ILS deviation---white to amber Q. Decesion height---white to amber Q. DH-----EADI Q. Q. Convert FFFF into binary? Q. A group of data sent one after another in ----Serial data Q. Diode arrow indicate—Hole current. Q.No. of bit in a byte? ---8 Q. Opcode in computer system 1.Decimal code 2.BCD 3.binary code 4.set of instruction. 26.Mask programmable—ROM Q. EICAS provide the following information 1.Engine parameter only 2.Engine parameter and system warning 3.Engine parameter and navigational data Q. Use of MOS ---In voltage regulator
Q. Grounding & bonding can also be minimised by the effects of ---HIRF
Q. Modifiable software can be upgraded by 1.operator 2.designer 28.Advantage of LCD over CRT? --Large viewing angle Q. The fastest data converter? ---Flash Q. Smaller function in semiconductor devices are susceptible to damage due to ---Electrostatic
Q.1011.11 to decimal---11.75 Q. SRAM & DRAM ---DRAM must be refreshed periodically. 29.(428)8---- (100111010)2 Q. what are the mode of ECAM---Four display mode( 3 auto, 1 manual) Q. Parts of EFIS Q. which bus provide timely & control signal throughout the system? ---Control bus Q.GPS consist of --Space, User , control Q. Logic device that produces a binary O/P Q. Advantage of different bus in bus system? Q.Rigidity---All Q. fibre Optic connector has 1.alignemnet key -Plug groove 2.Guided pin & cavities 3.Both Q.Covert 10011.1 into decimal. 1.6.125 2.6.001 3.6.12 4.6.876
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