Control System Objective Questions and Answers

8. A synchro-transmitter receiver unit is a

9. Which one of the following is an example of open-loop system?

A. A windscreen wiper

B. Aqualung

C. Respiratory system of an animal

D. A system for controlling anti-rocket missiles.

Discussion

10. The correct sequence of steps needed to improve system stability is

A. insert derivative action, use negative feedback reduce gain

B. reduce gain, use negative feedback, insert derivation action

C. reduce gain, insert derivation action, use negative feedback

D. use negative feedback, reduce gain, insert derivation action.

Discussion

11. Consider the system x(t) = [o i] X(t) + [b2] u(t) 1 1bi c(t) = d1d2 X (t) The conditions for complete state controllability and complete observability is

A. di >0, b2 >0, bi and d2 can be anything

B. di > 0, d2 > 0, bi and b2 can be anything

C. bi >0, b2 > 0, di and d2 can be anything

D. bi > 0, b2 > 0, bi and di can be anything

Discussion

12. Canonical decomposition of a linear time invariant system is given by

A. completely controllable and observable

B. completely controllable and unobservable

C. uncontrollable but observable

D. neither completely controllable not observable

Discussion

13. The transfer function of a system is given by 1 G (jo)) = (jo)) (juiT + 1) , K < ?T Which one of the following is the Bode plot of this function?

A. 0 log K0.1/T

B. 10fT cg,.?40 dB/decade

C. -20 dB/decade

D. -20dB/decade(0=K0.1/T

Discussion

14. The main drawback of a feedback system is

Electrical Engineering Objective Questions { Control System }