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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C. Both A and B

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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


✔ View Answer


B. Very near 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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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


✔ View Answer


A. Low level oscillations

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