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Control Systems - Interview Questions and Answers

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41. 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
Explanation:
42. An increase in gain, in most systems, leads to
A. smaller damping ratio
B. larger damping ratio
C. constant damping ratio
D. none of the above
Explanation:
43. The transfer function is applicable to which of the following ?
A. Linear and time-in variant systems
B. Linear and time-variant systems
C. Linear systems
D. Non-linear systems
Explanation:
44. The position and velocity errors of a type-2 system are
A. constant, constant
B. constant, infinity
C. zero, constant
D. zero, zero
Explanation:
45. Which of the following statements is not necessarily correct for open control system ?
A. Input command is the sole factor responsible for providing the control action
B. Presence of non-linearities causes malfunctioning
C. Less expensive
D. Generally free from problems of non-linearities
Explanation:
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