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Control Systems - Interview Questions and Answers

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16. A control system with excessive noise, is likely to suffer from
A. saturation in amplifying stages
B. loss of gain
C. vibrations
D. oscillations
Explanation:
17. Which of the following statements is correct for any closed loop system ?
A. All the co-efficients can have zero value
B. All the co-efficients are always non-zero
C. Only one of the static error co-efficients has a finite non-zero value
D. None of the above
Explanation:
18. 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
Explanation:
19. Which of the following statements is correct for a system with gain margin close to unity or a phase margin close to zero ?
A. The system is relatively stable
B. The system is highly stable
C. The system is highly oscillatory
D. None of the above
Explanation:
20. The transient response of a system is mainly due to
A. inertia forces
B. internal forces
C. stored energy
D. friction
Explanation:
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