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

Home » Control System » Control system miscellaneous » Question

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

1. – 6 / 5
2. 1 / 5
3. – 5 / 6
4. None of the above

Correct Option: A

For positive feedback system, the closed-loop gain of the system is given by

M(s) =	C(s)	=	G(s)
	R(s)		1 - G(s) H(s)

=	-3				=	-6
	1 + 3 ×	1				5
		2