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The closed loop gain of the system shown in the given figure is :

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The closed loop gain of the system shown in the given figure is :

(a) -9/5

(b) -6/5

(c) 6/5

(d) 9/5

I got this question in semester exam.

Question is from Block diagram Algebra topic in section Mathematical Models of Physical Systems of Control Systems

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Correct choice is (b) -6/5

The explanation: C(s)/R(s)=-3/1+3/2=-6/5.

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