Mechatronics 2 Mid Online Bits Www.studentshangout.com

MECHATRONICS 2 MID ONLINE BITS www.studentshangout.com 1. ______ determines the operating speed of PLC. :->Frequency of the clock 2. ______ of a microcontroller handles communications between the computer and the outside world :>Input/output circuitry inte rfaces 3. ______ of a microcontroller recognizes and carries out program instructions. :->CPU 4. ______ type of analog to digital converter is used in precision instrument application such as digital voltmeters :->Ramp 5. _______ are frequently used as the final control element in positional or speed-control systems :>Electric motor 6. _______ are rugged and designed to withstand vibrations, temperature, humidity and noise ` :>PLCs 7. _______ bus of a microcontroller is the means by which signals are sent to synchronize the separate elements :->Control 8. _______ can be used to provide electrically operated actuators :->Solenoids 9. _______ provide signal conditioning in PLC :-> Input/output channels 10. _______ register of a microprocessor is where data for an input to the arithmetic and logic unit is temporarily stored :->Memory address 11. _______ register of a microprocessor will allow the CPU to keep track of its position in a program :>Program counter 12. ________ angle is the angle through which the rotor of a stepper motor rotates for one switching change for the stator coils :->Step 13. ________ in PLCs are very useful in the implementation of switching sequence :->Internal relays 14. ________ is a device that provides a digital out put as a result of a linear or angular displacement :>Encoder 15. ________ motors are used in aerospace gyroscopes :->Brus hless dc 16. ________ motors are used to drive motor scooters :->Wound armature PM 17. ________ motors can be used as controllable variable speed motors :->Steppe r 18. ________ of a micro controller holds the program instructions and data :->Memory 19. ________ of CPU determines the timing and sequence of operations :->Control unit 20. ________ often used in PLCs when there are programs with multiple input conditions :->Internal relays 21. _________ are used in PLCs for starting of multiple output :->Internal relays 22. _________ are used in PLCs, for counting a specified number of contact operations :->Counters 23. _________ bus of a microcontroller carries signals which indicate where data is to be found and for selection of certain memory location or input/output ports b) c) d) :->Address 24. _________ control is invariably used in conjunction with proportional control, so that controller output will not be zero even with a steady error signal b) Integral :->Derivative 25. _________ language is used for a mnemonic code pertaining to microprocessors :->Assembly 26. _________ languages provide a type of programming language which is closer to types of operations required :->High level 27. _________ motors are used in artificial heart pumps :-> Brushless dc 28. _________ motors are used to drive forklifts :->Wound armature PM 29. _________ motors are used to drive wheel chairs :->Wound armature PM 30. _________ type of analog to digital converter has high speed and high resolution :->Ramp 31. __________ are used in PLC for restarting a latch :->Inte rnal relays 32. __________ in PLCS are not actual relays but simulations by the software of PLC :->Internal

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relays 33. __________ in PLCS are not actual relays but simulations by the software of PLC :-> Auxiliary relays 34. __________ in PLCS are not actual relays but simulations by the software of PLC :->Markers 35. __________ type of transistors are used in the inverter section of pulse wave modulated drive circuit :>IGBT 36. ___________ DC motor exerts the highest starting torque :->Series wound 37. ___________ is one of the actions that are often required of an interface circuit of a microprocessor :>Code conversion 38. ___________ is one of the actions that are often required of an interface circuit of a microprocessor :>Changing the number of lines 39. ___________ is one of the actions that are often required of an interface circuit of a microprocessor :>Electrical buffering 40. ___________ is one of the actions that are often required of an interface circuit of a microprocessor :>Timing control 41. ___________ is one of the actions that are often required of an interface circuit of a microprocessor :>Serial data transfer 42. _____controls and processes all the operators within the PLC :->CPU 43. 1. __________ are controlled by direct current command signals that are applied to coils, which become electromagnets :->DC servo motors 44. 10. Electrical relay offers __________ in response to a control signal :->ON/OFF switching action 45. 2. In a digital control system, input to microprocessor is from ________ :->ADC 46. 2. The armature of a dc motor is mounted in the magnetic field produced by _________ :->Field poles 47. 3. ___________ motor has a permanent magnet encased in iron caps which are cut to have teeth :>Hybrid stepper 48. 4. ________ bus of a microcontroller is used to transport a word to or from the CPU and the memory or the input/output devices. :-> Data 49. 5. ____________ motor are extensively used in computer hard disc drives :->Hybrid steppe r 50. 5. As the torque decreases, speed of wound armature PM motor :->Increases 51. 5. C language is an example for __________ language :->High level 52. 6. DC _________ motor has two field windings :->Compound 53. 7. In ________, a magnetic core is moved for measurement of displacement :->LVDT 54. 7. The term __________ refers to the number of independent windings on the stator of stepper motor :>Phase 55. 8. A ________ in PLC is an instruction for some event to occur :->Program step 56. 9. ________ register of a microprocessor contains the result of the latest process carried out in the arithmetic & logic unit :->Status 57. 9. __________ are used when a large, sudden force must be applied to perform some job :>Solenoids 58. 9. For obtaining very small step angles from stepper motor, a technique known as ___________ is

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www.studentshangout.com used :>Mini-stepping 59. A _____ motor would be used for constant speed applications :->DC shunt wound 60. A ________ consists of a resistance element with a sliding contact which can be moved over the length of the element :->Potentiometer 61. A ________ in PLC gives permanent storage for the operating system and fixed. :->System ROM 62. A ________ is a rectifier that converts AC line voltage to a pulsating DC voltage :->Converter 63. A _________ controller produces no offset error and reduces the tendency for oscillations :>Proportional, integral and derivative 64. A _________ controller uses a programmable memory to store instructions and to implement functions such as logic, sequencing, timing, counting and arithmetic :->Programmable 65. A _________ drive is better suited where abrupt load, speed and position changes are likely to occur :>Flux vector 66. A _________ function of PLC enables programs to be designed so that if a certain condition exists, then a section of the program is jumped. :->Conditional jump 67. A __________ is an elementary device that converts an elec trical signal into mechanical motion, usually rectilinear in a straight line :->Solenoid 68. A ___________ shaped wave form is produced by pulse width modulated drive circuit :-> Sinusoidal 69. 'A' in fig is _________:->Interface 70. A number of internal relays are grouped in a PLC together to form a _________ register which can provide a storage area for a series sequence of individual bits. :->Shift 71. An amplifier with a voltage gain of 10, will give for an input of 2mv, an output of _________ mv :->20 72. BAS1C language is an example for _________ language :-> High level 73. 'B'in fig is __________ :->Interface 74. Cascaded timers in PLCs give _________ delay times than with one timer. :->Larger 75. Contents of _________ register of a microprocessor forms an address which defines the top of the stack in RAM :->Stack pointer 76. Conversion time of analog to digital converter is usually _________ :->10 to 100microseconds 77. DC brushed motors require a ____________ and brushes in order to periodically reverse the current through each armature coil :->Commutator 78. DC brushed motors require a commutator and __________ in order to periodically reverse t he current through each armature coil :->Brus hes 79. DC servo motors are referred to as __________ motors :-> Pe rmanent magnet 80. Decrement instruction pertains to ________ instruction set :->Arithmetic 81. Digital controller is basically a _________ used for the control of closed loop control system :>Microprocessor 82. Each rung in ladder diagram of PLC must start with _______ :-> Input 83. Example of input devices to PLC is _________ :->switch 84. Example of openloop control is ________ :->Traffic signals 85. Example of output devices of PLC is ________ :->Motor

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86. Figure shows a ladder program for __________ logic:->XOR 87. Figure shows a situation for __________ logic :->NAND 88. Figure shows a situation for __________ logic:->NOR 89. Figure shows a situation for ____________ logic:->AND 90. Figure shows a situation for ____________ logic:->OR 91. Flow chart symbol shown in fig is _______:->Start/end 92. Flow chart symbol shown in fig is _______:->Start/end 93. Flow chart symbol shown in fig is _______:->Start/end 94. Flow chart symbol shown in fig is _______:->Start/end 95. For Mitsubishi 'F' series PLCs, 'insert a constant'is designated by __________ :->ORI 96. For Mitsubishi 'F' series PLCs, 'start a rung with an open contact' is designated by :->LD 97. FORTRAN language is an example for ________ language :-> High level 98. If 'f' is the supply frequency, 'P' is the number of poles, then speed of ac motor is __________ :>120f/P 99. If PLC is used for speed control of a motor, full speed is realized when the output from the data register is the word_______ :-> 1 1 1 1 1 1 1 1 100.If the control output is 'I' the input error signal is 'e', and KI is a constant, then integral mode of control is expressed by the equation :-> 101.If the number of types of instructions to be handled by a PLC increases, a ________ CPU is required. :-> Faster 102.If εr is the relative permittivity of the dielectric between the plates of a capacitor, ε0 - a constant, 'A' area of overlap between two plates and 'd' is plate separation, then capacitance C = Tε r ε d× :->A/d 103.If 'Φ' is magnetic flux swept through by a conductor changes, then induced e.m.f. 'e' in the conductor is e = ___________ :-> 104.In a _________, when a current passes through coil it can ope n or close port of the connected valve, to allow the flow of a fluid :->Solenoid 105.108. 106. 107.

In a digital from _________ :->Comparator controlIn a digital control system, input to correction element is from ________ :->DAC system, input In a digital control system, input to DAC is from ________ :->Microprocessor to ADC is In a digital control system, input to process is from _______ :-> Correction element 108.In a digital control system, output of ADC is fed to ______ :-> Microprocessor 109.In a digital control system, output of correction element is fed to _________ :->Process 110.In a digital control system, output of DAC is fed to _______ :->Correction element 111.In a strain gauge, if '∆R' is change in resistance, 'R' is it s resistance, strain 'ε and G is constant of proportionality, then:->Gε 113.In C language, the ________ statement allows for the selection between several alternatives, the test condition being in parenthesis :->Switch 114.In C language, the _________ statement allows for a loop to be continually repeated as long as the expression is true :-> While 115.In C language, the __________ statement allows branching :->If 116.In C language, the symbol & represents _________ bitwise ope ration :->AND 117.In C language, the symbol '&&' represents _________ logical operator :->AND 118.In C language, the symbol '1' represents _________ bitwise operation :->OR 119.In C language, the symbolrepresents _________ bitwise operation :->NOT 120.In C language, the symbol represents _________ bitwise operation :->EXCLUSIVE-OR 121.In C language, the term ________ is used for the execution of a sequence of statements until a

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particular condition reaches the required condition of being true or false :->Loop 122.In capacitive proximity sensor, change of _________ principle is used :->Plate separation 123.In eddy current proximity sensor, the material of the object should be :-> Metal 124.In Figure pertaining to a ladder diagram for BCD to binary, 'Q' is :->Source data 125. In Figure pertaining to a ladder diagram for compare data, 'C' is _______:->Destination address 126. In Figure pertaining to a ladder diagram for compare data, 'P' is ________:->Source data 127. In Figure pertaining to a ladder diagram for move data, 'A' is ________:->Destination address 128. In Figure pertaining to a ladder diagram for move data, 'B' is :->Source data 129. In figure, E(S) = ________:->R(S) - Y(S) 130.In inductive proximity switch, when the end of the coil is close to a metal object, it's _________ changes :->Inductance 131.In Mitsubishi PLC, auxiliary relays have been preceded by a(n) ______ :-> M 132.In Mitsubishi PLC, input memory address have been preceded by a(n) _________ :->A 133.In Mitsubishi PLC, outputs have been preceded by a(n) _____ :->Y 134.In Mitsubishi PLC, timers have been preceded by a(n) ______ :-> T 135.In proportional control, if KP is proportionality constant, the relation between KP and proportional band is given by ____ :-> 136.In the AC to DC converter section of pulse width modulated drive circuit __________ are used :>Diodes 137.In the control of room temperature by heating, a _______ will occur between room temperature falling below the required temperature and the control system responding and switching on the heater :-> Lag 138.In the conventional dc motors, coils of wire are mounted in slots o n a cylinder of magnetic material called _________ :->Armature 139.In the domestic washing machine, there will be ________ control for various parts of the washing cycle, with feedback loop control of the temperature of hot water and level of water :->Sequence 141.In wound armature PM motor the field flux __________ :->Remains constant 142.In wound armature PM motor, as torque increases, speed of the motor __________ :->Decreases 143.Input information to digital to analog converter is in ______ :->Digital form 144.Instructions written in binary code are referred to as being in ________ language :->Machine 145.Intermediate section of pulse wave modulated drive circuit consists of _________ :->Filte rs 146.Ladder symbol pertaining to PLC shown in Fig is:->Input contact (Normally open) 148. Ladder symbol pertaining to PLC shown in Fig is:->Input contact (Normally closed) 149. Ladder symbol pertaining to PLC shown in Fig is :->Special instruction 150. Laplace inverse of is _____:->(1 - e -at) 151. is ________:->e -atLaplace inverse of 152. Laplace transform of a ramp signal which start at a time t = 0, and described by the equation input '1t' is ________ :->1/S2 153.Laplace transform of a unit amplitude sine wave signal described by equation input 1Sinωt is ___________ :-> 154.Laplace transform of a unit impulse signal which occurs at time t = 0 is _________ :->1 155.Laplace transform of a unit step signal which jumps to the constant value of 1 at a time t = 0 is ___________ :-> 1/S 156.Load instruction belongs to ________ instruction set :->Data transfer 157.LVDT consists of ________ coils ` :-> 4 158.Memory addresses and their locations in the PLC memory allocated for data are termed as ____________ :->Data registers 159.n dc motor with armature conductor of length L and carrying a current 'i', the force re sulting from a

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magnetic flux density 'B' at right angles to the conductor is _________ :-> 160.Number of steps that can be handled by a small PLC is typically of the order of 300 to ________ :>1000 161.One of the input to the shift registers of PLC is ________ :-> SFT 162.One of the input to the shift registers of PLC is ________ ` :-> SFT 163.One of the inputs to the shift registers of PLC is ________ :->OUT 164.Output of analog to digital converter is a _________ :->Serial binary word 165.Output of process, in a digital control system is fed to ____ :->Comparator 166.Output of pulse width modulated drive circuit is variable __________ 3phase power :->Voltage and variable frequency 167.PASCAL language is an example for ________ language :->High level 168.PLCs are generally provided with only __________ timers :->Delay-ON 169.Position sensors are concerned with the determination of the position of some objec t w.r.t ________ :->Some reference point 170.Rotate (left or right) instruction pertains to __________ instruction set :->Logical 171.Size of memory in PLC is linked to __________ and the complexity of program used :->Numbe r of inputs/Outputs 172.Solenoid valves are an example of application of _______ :->Solenoids 173.Steady state error for a system with error e(t) is e ss = _____ (E(S)- Laplace transform of e(t)) :> The ________ is an example of a mechanical switch used in control syste ms as an actuator :174. >Electrical relay 175.The ________ mode of control is one, where the rate of change of the control output is proportional to the input error signal :->Integral 176.The ________ offers a simple ON/OFF switching action in response to a control signal :>Electrical relay The _________ converts the fixed voltage and frequency of an AC power line to an adjustable AC177. voltage and frequency :->Drive controller 178.The _________ motor produces rotation through equal angles :->Stepper 179.The integral mode of control is not usually used alone but it is frequently used in conjunction with the _______ mode :-> Proportional 180.The inverter section of pulse width modulated drive circuit consists of __________ :-> Transistor switches 181.The process of repeated checking each peripheral device to see if it is ready to send or accept a new byte of data is called ______ :->Polling 182.The relationship between the Laplace transform of the output and the Laplace transform of t he input is stated by _________ :->Transfer function 183.The solid-state relay is usually implemented using _________ and _________ :->SCRs, TRIACS 184.The term _________ is used for a device, such as a sensor, keyboard, actuator etc which is connected to a microprocessor :->Peripheral 185.The term __________ controller is used for a simple controller based on a microprocessor carrying

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out programmed logic instructions. :->Programmable logic 186.The term __________ error is used for the difference between the set value input and the output after all transients have died away :->Steady state 187.The ways in which controllers react to error signals are termed as _________ :->Control modes 188.Two phase stepper motors are termed _______ when they have six connecting wires for the generation of the switching-sequence :->Unipolar 189.Typical step angle of hybrid stepper motor is _________ :->0.9 ° 190.Usage a bimetallic strip for temperature control is an example of ________ mode of control :>Twostep 191.variable reluctance stepper motor generally gives step angles of _________ :->7.5 ° 192.When a digital computer is used as a controller, the term ________ controller is used. :-> Direct digital When a low-current signal is inadequate to drive a heavy industrial relay, _________ is used to193. boost the control signal :->Amplifier 194.When all bits are zero, analog output of digital to analog converter is __________ :->Zero 195.When there is a steady error signal, there will not be any output of _________ control :>Derivative 196.With the _________ mode of the control, the change in controller output from the set point value is proportional to the rate of change with time of the error signal :->Derivative 197.With the _________ mode, the size of the controller output is proportional to the size of the error :>Proportional

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