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Control Systems - Interview Questions and Answers

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6. 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
Explanation:
7. An automatic toaster is a ______ loop control system.
A. open
B. closed
C. partially closed
D. any of the above
Explanation:
8. Which of the following devices are commonly used as error detectors in instruments ?
A. Vernistats
B. Microsyns
C. Resolvers
D. Any of the above
Explanation:
9. Any externally introduced signal affecting the controlled output is called a
A. feedback
B. stimulus
C. signal
D. gain control
Explanation:
10. As a result of introduction of negative feedback which of the following will not decrease ?
A. Band width
B. Overall gain
C. Distortion
D. Instability
Explanation:
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