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Mr. Dubey • 52.43K Points
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Q. The output of the feedback control system must be a function of:

(A) reference input
(B) reference output
(C) output and feedback signal
(D) input and feedback signal
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Explanation by: Mr. Dubey 
 feedback control system has the property of reducing the error and that is by differencing the output with the desired output and as the equation of the output of the system is c=gr/1+gh.

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