A. Underdamping
B. Overdamping
C. Poor stability at reduced values of open loop gain
D. Low-level oscillations
Related Mcqs:
- Which of the following should be done to make an unstable system stable ?
A. The gain of the system should be decreased
B. The gain of the system should be increased
C. The number of poles to the loop transfer function should be increased
D. The number of zeros to the loop transfer function should be increased - A conditionally stable system exhibits poor stability at______________?
A. low frequencies
B. reduced values of open loop gain
C. increased values of open loop gain
D. none of the above - Which of the following is an open loop control system ?
A. Field controlled D.C. motor
B. Ward leonard control
C. Metadyne
D. Stroboscope - Due to which of the following reasons excessive bond width in control systems should be avoided ?
A. It leads to slow speed of response
B. It leads to low relative stability
C. Noise is proportional to band width
D. None of the above - ___________From which of the following transfer function can be obtained ?
A. Signal flow graph
B. Analogous table
C. Output-input ratio
D. Standard block system
F. None of the above - In order to increase the damping of a badly underdamped system which of following compensators may be used ?
A. Phase-lead
B. Phase-lag
C. Both A. and B.
D. Either A. and B.
F. None of the above - The transfer function technique is considered as inadequate under which of the following conditions ?
A. Systems having complexities and non-linearities
B. Systems having stability problems
C. Systems having multiple input disturbances
D. All of the above - Addition of zeros in transfer function causes which of the following ?
A. Lead-compensation
B. Lag-compensation
C. Lead-lag compensation
D. None of the above - Which of the following is the best method for determining the stability and transient response ?
A. Root locus
B. Bode plot
C. Nyquist plot
D. None of the above - Which of the following is the non-linearity caused by servomotor ?
A. Static friction
B. Backlash
C. Saturation
D. None of the above
