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Which of the following will not decrease as a result of introduction of negative feedback?

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Which of the following will not decrease as a result of introduction of negative feedback?

(a) Instability

(b) Bandwidth

(c) Overall gain

(d) Distortion

I got this question in final exam.

Query is from Feedback Compensation topic in chapter Design of Control Systems

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Best answer
Right answer is (b) Bandwidth

The explanation: Bandwidth always increases due to negative feedback as the speed of response is directly proportional to the bandwidth.

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