The forward path transfer function of a unity feedback system is given by G(s) = 1/(1+s)^2. What is the phase margin of the system?
A. –π rad
B. 0 rad
C. π/2 rad
D. π rad
Answer:D
The forward path transfer function of a unity feedback system is given by G(s) = 1/(1+s)^2. What is the phase margin of the system?
A. –π rad B. 0 rad C. π/2 rad D. π rad
Explanation: Magnitude at gain cross over frequency is 1 and PM is π rad.