Gate EC-2012 Question Paper With Solutions

Q. 30 The feedback system shown below oscillates at 2 rad/s when

(A) K = 2 and a = 0.75

(B) K = 3 and a = 0.75

(C) K = 4 and a = 0.5

(D) K = 2 and a = 0.5

Answer: A

Explanation: