Automatic Control Systems MCQ

Automatic Control Systems MCQ

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  • 25th Aug, 2022

Take Automatic Control Systems MCQ Test & Online Quiz to test your Knowledge

Practice here the best  Automatic Control Systems MCQ Questions that check your basic knowledge of Automatic Control Systems. This Automatic Control Systems MCQ Test contains 20+ Multiple Choice Questions. You have to select the right answer to the question. apart from this, you can also download the Automatic Control Systems MCQ PDF completely free.

Automatic Control Systems MCQ

1) What is a stepper motor?

  • A. It is a kind of rotating amplifier
  • B.It is a two phase induction motor
  • C.It is an electromechanical device
  • D.It is an electromagnetic transducer

2) When a unit step voltage drives a lag network the output

  • A. remains constant at unit step value
  • B.decreases exponentially from 1 to 0
  • C.increases exponentially from zero to final value
  • D.None of the above

3) Bellows converts

  • A. pressure difference into voltage
  • B.pressure difference into displacement
  • C.displacement into pressure difference
  • D.None of the above

4) Stepper motors find applications in printers.

  • A. True
  • B.False

5) in control systems the magnitude of error voltage ..........

  • A. is very large
  • B.is very small
  • C.neither small nor large
  • D.None of the above

6) Usually, What is the current rating of dc tachogenerator?

  • A. Small
  • B.Medium
  • C.High
  • D.None of the above

7) Does Lag compensation increase the bandwidth of the system?

  • A. Yes
  • B.No

8) What are the most commonly used devices for differencing and amplification, in control systems?

  • A. FET amplifiers
  • B.BJT amplifiers
  • C.Operational amplifiers
  • D.All of the above

9) In a second order system ωn = 10 rad/sec and ζ = 0.1, then find the ωd =?

  • A. 1 rad/sec
  • B.9 rad/sec
  • C.9.1 rad/sec
  • D.9.95 rad/sec

10) Which of the following device is used for providing rate feedback voltage in position control system?

  • A. Potentiometer
  • B.Tacho generator
  • C.Synchro-transmitter
  • D.Synchro-transformer

11) The relative stability of a system is given by which of the followings?

  • A. Phase margin alone
  • B.Gain margin alone
  • C.Both A & B
  • D.None of the above

12) Transport lag usually exists in ............

  • A. Thermal systems
  • B.Pneumatic systems
  • C.Hydraulic systems
  • D.All of the above

13) The entire damping comes from ............ in the field controlled motor.

  • A. Back emf
  • B.Field resistance
  • C.Armature resistance
  • D.Motor friction and load

14) Integral control action

  • A. Removes offset
  • B.May lead to oscillatory response
  • C.Both A & B
  • D.None of the above

15) A system is highly oscillatory if gain margin is close to 1 or phase margin is zero.

  • A. True
  • B.False

16) Which of the following sensor is generally used in incremental optical encoder?

  • A. LCD
  • B.LED
  • C.Photodiode
  • D.None of the above

17) Magnetic amplifier is used for .............

  • A. Power amplification
  • B.Current amplification
  • C.Voltage amplification
  • D.Frequency amplification

18) Which of the following control action can never be used alone?

  • A. Integral
  • B.Derivative
  • C.Proportional
  • D.None of the above

19) Robotic manipulator arms mostly use

  • A. Hydraulic actuator
  • B.Electric motor actuator
  • C.Pneumatic actuator
  • D.None of the above

20) Mechanical impedance is the ratio of

  • A. Rms force to rms velocity
  • B.Rms force to rms displacement
  • C.Rms velocity to rms displacement
  • D.All of the above

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