1000_ control system quiz
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1000+ Control System Quiz, Top MCQ On Control System

Posted on by Darshan Vaniya

Hello guys, welcome back to our blog. In this article, I will share a control system quiz so that you can test your knowledge, I will some commonly asked MCQs on the control system, etc.

If you have any electrical, electronics, and computer science doubts, then ask questions. You can also catch me on Instagram – CS Electrical & Electronics And Chetan Shidling. 

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Control System Quiz

1) ________ is known as automatic control system. 

  • a) Open loop control system 
  • b) Closed loop control system 
  • c) Either 1 or 2 
  • d) Nether 1 nor 2 

Answer

2) Advantages of the open-loop control system is/are,

  • a) simple and economical
  • b) accurate
  • c) reliable
  • d) all of the above

Answer

3) Why signal flow graph is used? 

  • a) To find the stability of the system 
  • b) To find the transfer function of a system 
  • c) To find poles of the system 
  • d) All of the above 

Answer

4) Which is the Electrical analogous quantity for spring element (K) in force voltage analogy? 

  • a) L 
  • b) R 
  • c) 1/C 
  • d) C 

Answer

5) The input of the system is depending upon the output quantity, then the  system is a 

  • a) open-loop control system
  • b) closed-loop control system
  • c) either 1 or 2
  • d) none of the above

Answer

6) Assume two blocks having gains P and Q, and connected in series with each other, what is the resultant gain using the block diagram reduction method? 

  • a) P+Q 
  • b) P*Q 
  • c) P-Q 
  • d) P/Q 

Answer

7) In signal flow graph input node is node having only________ branches.

  • a) incoming
  • b) outgoing  
  • c) both 1 and 2
  • d) none of the above

Answer

8) Which of the following are the characteristics of a negative feedback control system? 

  • a) Low sensitivity to parameter variations 
  • b) Rejection of disturbance signals 
  • c) (a) & (b) both 
  • d) None of above 

Answer

9) Which of the following is/are the example of an actuator?

  • a) Pneumatic motor 
  • b) Hydraulic motor 
  • c) All 
  • d) Electric motor 

Answer

10) Transient state analysis deals with_____. 

  • a) Magnitude of error 
  • b) Nature of response 
  • c) Both 1 and 2 
  • d) None of the above 

Answer

11) The steady-state error for ramp input for a type two system is  equal to  

  • a) zero
  • b) infinite
  • c) non-zero number
  • d) constant

Answer

12) Differentiation of parabolic response is a ___________response.

  • a) parabolic 
  • b) ramp 
  • c) step 
  • d) Impulse 

Answer

13) Lead compensator is used to improve 

  • a) Transient response 
  • b) Steady-state response 
  • c) Both 1 and 2 
  • d) None of the above 

Answer

14) Find the Laplace transform for sin(ωt)? 

  • a) 1/s 
  • b) 1/s²
  • c) s/(s²+ω²) 
  • d) ω/(s²+ω²) 

Answer

15) For a type 1 system with parabolic input, the steady-state error is

  • a) zero
  • b) finite constant
  • c) infinite
  • d) indeterminate

Answer

16) Time taken for the response to rise from zero to 100 % for the very  first time is called 

  • a) Rise time
  • b) Settling time
  • c) Delay time
  • d) Peak time

Answer

17) Lead network is used to 

  • a) improve transient response
  • b) both A and C
  • c) increase bandwidth 
  • d) improve steady-state response 

Answer

18) A system is stable for (where GM = Gain Margin and PM = Phase  Margin) 

  • a) GM and PM both +ve 
  • b) GM and PM both -ve 
  • c) GM -ve 
  • d) PM – ve

Answer

19) In a control system, an integrator is represented by

  • a) s
  • b) s2
  • c) 1 / s2
  • d) 1 / s

Answer

20) A function of one or more variables that provides information  about the nature of a physical event is called 

  • a) signal
  • b) interference
  • c) system
  • d) noise

Answer

21) A system of constant voltage and constant frequency is called  _______ system

  • a) feedback
  • b) infinite
  • c) zero
  • d) none of the above

Answer

22) The transfer function of the control system depends on

  • a) the system parameters alone
  • b) nature of the input
  • c) initial conditions of input and output
  • d) nature of the output 

Answer

23) Error constants of a system are a measure of 

  • a) transient state response
  • b) steady-state response as well as a transient state response
  • c) relative stability
  • d) steady-state response

Answer

24) Transient response is improved in case of 

  • a) lag network
  • b) lead network
  • c) both A and B
  • d) None of these 

Answer

25) Which of the following controller is also known as anticipatory controllers? 

  • a) proportional controller 
  • b) integral controller 
  • c) derivative controller 
  • d) both 1 and 3 

Answer

26) The magnitude condition for root locus is________.

  • a) |G(s)H(s)| = 0 
  • b) |G(s)H(s)| = 2 
  • c) |G(s)H(s)| = 1 
  • d) |G(s)H(s)| = ∞ 

Answer

27) A lag compensator 

  • a) increases the damping ratio 
  • b) decreases the damping ratio 
  • c) increases the bandwidth 
  • d) increases the stability 

Answer

28) If the bandwidth of the system is very broad, then the response of the system is 

  • a) faster 
  • b) slower
  • c) independent of bandwidth 
  • d) none of the above 

Answer

29) Which of the following is the correct formula for the transfer function of an electrical RC phase lag compensating network?

  • a) RCS/(1+RCS) 
  • b) RC/(1+RCS) 
  • c) C/(1+RCS) 
  • d) 1/(1+RCS) 

Answer

30) Traffic signal light system is the example of_______. 

  • a) Open-loop system 
  • b) Closed-loop system 
  • c) Both (a) and (b) 
  • d) None of these

Answer

This was about the “Control System Quiz“. I hope this article may help you all a lot. Thank you for reading.

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