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Electrical Engineering Objective Questions { Control System }



36.  On adding a pole at s = 0, the Nyquist plot of a system will
A. remain unaltered
B. rotate clockwise by 90?
C. rotate anticlockwise by 90?
D. rotate by 180?

37.  In a control system, the controller consists of
A. error detector
B. error detector and control element
C. error detector and controlled element
D. none of these

38.  The phase margin of a system specifies
A. relative stability
B. absolute stability
C. frequency response
D. none of these

39.  The Bode diagram method is applied to
A. minimum phase network
B. non-minimum phase network
C. all pass network
D. every network of the control system

40.  The bandwidth ofa control system may be increased by
A. phase lead compensator
B. phase lag compensator
C. phase lag?lead compensator
D. none of these

41.  Addition of zeros in transfer function causes
A. lead compensation
B. lag compensation
C. lag?lead compensation
D. none of these

42.  Addition ofpoles in transfer function causes
A. lead compensation
B. lag compensation
C. lag-lead compensation
D. none of these

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