Which of the following statements is incorrect in respect of closed loop control system?

Which of the following statements is incorrect in respect of closed loop control system ?

A. The source power of the feedback system is modulated by error signal
B. Use of feedback minimizes the effects of disturbing signal
C. With feedback system the transient response decays more quickly
D. A D.C. closed loop control system has modulated wave forms

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Answer: D

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