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Control Systems - Interview Questions and Answers

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36. The viscous friction co-efficient, in force-voltage analogy, is analogous to
A. charge
B. resistance
C. reciprocal of inductance
D. reciprocal of conductance
Explanation:
37. In a stable control system backlash can cause which of the following ?
A. Underdamping
B. Overdamping
C. Poor stability at reduced values of open loop gain
D. Low-level oscillations
Explanation:
38. In a control system the output of the controller is given to
A. final control element
B. amplifier
C. comparator
D. sensor
Explanation:
39. Phase margin of a system is used to specify which of the following ?
A. Frequency response
B. Absolute stability
C. Relative stability
D. Time response
Explanation:
40. The type 2 system has at the origin.
A. no net pole
B. net pole
C. simple pole
D. two poles
Explanation:
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