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Control Systems - Interview Questions and Answers

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26. On which of the following factors does the sensitivity of a closed loop system to gain changes and load disturbances depend ?
A. Frequency
B. Loop gain
C. Forward gain
D. All of the above
Explanation:
27. In liquid level and electrical system analogy, voltage is considered analogous to
A. head
B. liquid flow
C. liquid flow rate
D. none of the above
Explanation:
28. Transfer function of a system is used to calculate which of the following ?
A. The order of the system
B. The time constant
C. The output for any given input
D. The steady state gain
Explanation:
29. The transient response, with feedback system,
A. rises slowly
B. rises quickly
C. decays slowly
D. decays quickly
Explanation:
30. A controller, essentially, is a
A. sensor
B. clipper
C. comparator
D. amplifier
Explanation:
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