A unity feedback system with open-loop transfer function G (s) = 4/[s(s+p)] is critically damped. The value of the parameter p is
A. 4
B. 3
C. 2
D. 1
Answer:A
A unity feedback system with open-loop transfer function G (s) = 4/[s(s+p)] is critically damped. The value of the parameter p is
A. 4 B. 3 C. 2 D. 1
Explanation: The value of the p can be calculated by comparing the equation with the standard characteristic equation.