Control System Multiple Choice Questions and Answers
21. In a non-linear control system limit cycle is self sustained oscillations of
A. Fixed frequency
B. Variable frequency
C. Variable amplitude
D. Fixed frequency and amplitude
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D. Fixed frequency and amplitude
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22. In a hybrid feedback control system carrier signals are
A. Only A.C.
B. Only D.C.
C. Both A and B
D. None of the above
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23. The steady state output of a unity feedback control system is.............reference input
A. Equal to
B. Very near to
C. Much more than
D. Not related to
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24. In control systems stepper motors can be used for
A. Tape drives
B. Capstan drives
C. Computers
D. None of the above
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25. Backlash, in a stable control system, can cause which of the following?
A. Low level oscillations
B. Overdamping
C. Underdamping
D. All of the above
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