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Insertion of negative feedback in control system affects:

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Insertion of negative feedback in control system affects:

(a) The transient response to vanish uniformly

(b) The transient response to decay very fast

(c) No change in transient response

(d) The transient response decays at slow rate

This question was addressed to me in an international level competition.

My question is taken from Feedback Compensation in division Design of Control Systems

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Correct option is (b) The transient response to decay very fast

Explanation: Feedback can be positive or negative but practically positive feedback is not used as it causes oscillations in the system with more gain and hence negative feedback is use which causes speed of response to increase.

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