In regenerating the feedback, the transfer function is given by(a) C(s)/R(s)=G(s)/1+G(s)H(s)(b) C(s)/R(s)=G(s)H(s)/1-G(s)H(s)(c) C(s)/R(s)=G(s)/1+G(s)H(s)(d) C(s)/R(s)=G(s)/1-G(s)H(s)I had been asked this question in unit test.The query is from Transfer Functions topic in chapter Mathematical Models of Physical Systems of Control Systems

In regenerating the feedback, the transfer function is given by(a) C(s

1.	In regenerating the feedback, the transfer function is given by(a) C(s)/R(s)=G(s)/1+G(s)H(s)(b) C(s)/R(s)=G(s)H(s)/1-G(s)H(s)(c) C(s)/R(s)=G(s)/1+G(s)H(s)(d) C(s)/R(s)=G(s)/1-G(s)H(s)I had been asked this question in unit test.The query is from Transfer Functions topic in chapter Mathematical Models of Physical Systems of Control Systems
Answer» Correct option is (d) C(s)/R(s)=G(s)/1-G(s)H(s) EASIEST explanation: REGENERATING feedback is positive feedbackand it increases the infinitely and hence the speed of response of the system reduces.

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