In the Bode-plot of a unit y feedback cont rol system, the value of phase of G (jω) at the gain cross over frequency is – 125°. The phase margin of the system is
– 125°
– 55°
55°
125°
Correct Option: C
Given that in a Bode-plot | G φ(jω) | ω = 125° Phase margin of system, φM = – 125 + 180 = 55°
