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Which of the following is an effect of lag compensation?

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Which of the following is an effect of lag compensation?

(a) Decrease bandwidth

(b) Improves transient response

(c) Increases the effect of noise

(d) Increases stability margin

This question was posed to me during an online exam.

This is a very interesting question from Cascade Compensation in Time Domain in chapter Design of Control Systems

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The correct option is (a) Decrease bandwidth

Easy explanation: Lag compensation is the integral compensation that introduces the lag in the response by slowing the response and reducing the steady state error value by decreasing bandwidth.

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