Q. 28 A single-input single output feedback system has forward transfer function G(s )
and feedback transfer function H(|s ). It is given that
Which of
the following is true about the stability of the system ?
(A) The system is always stable
(B) The system is stable if all zeros of G(s )H(s ) are in left half of the s -plane
(C) The system is stable if all poles of G(s )H(s ) are in left half of the s -plane
(D) It is not possible to say whether or not the system is stable from the
information given
Answer:(A)
Explanation:
Excellent