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With feedback _____ reduces.

(a) System stability

(b) System gain

(c) System stability and gain

(d) Damping

The question was asked during an online interview.

My query is from Stability of Nonlinear System in portion Nonlinear Systems of Control Systems

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Right option is (b) System gain

For explanation I would say: With feedback damping increases and system gain reduces as they are inversely proportional to each other and for the good control system the speed of response must be high with low gain and oscillations.

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