Automatic Control System MCQ Questions and Answers
1. A system with large time constant corresponds to a _____ system.
Answer : B
2. The AC servomotor is basically a :
Answer : C
3. Error or actuating signal is generated in a :
Answer : B
4. In a block diagram error detector _____
Answer : B
5. The drag up rotor employed in a 2-phase induction motor to give :
Answer : B
Automatic Control System MCQ
6. Damping in a control system is a function of
Answer : C
7. Root locus is the plot of the roots of the characteristic equation of a closed loop system against variation in :
Answer : A
8. Slope of factor K in plotting Bode Magnitude curve is :
Answer : A
9. If a zero appears in the first column of the Routh table, the system is :
Answer : A
10. Which of the following technique provide quick transient and stability response ?
Answer : D
Automatic Control System MCQ
11. The characteristic equation of a closed loop system is given by S²+4S+16=0. The undamped natural frequency in rad/sec is :
Answer : C
12. Which of the following may result in instability problem :
Answer : D
13. In time domain specification, the delay time is the time required for the response to reach :
Answer : C
14. If all the roots of the characteristic equation lie in the left half of S-plane the system will be :
Answer : A
15. Root locus is used to calculate :
Answer : D
Automatic Control System MCQ
16. Which of the test signal are best utilized by the stability analysis ?
Answer : B
17. The critical value of gain for the system is 40. The system is operating at a gain of 20. The gain margin of the system is :
Answer : C
18. Addition of zero at the origin causes
Answer : A
19. Multiple signals as input can be used in which systems :
Answer : A
20. The characteristic equation of a system is given by 3S^4 +10S³+5S²+2=0. The system is :
Answer : C
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