A polar plot intersects the unit circle at a point making -45° to the negative real axis then the phase margin of the system is :
A. -45°
B. 45°
C. 180°-45°
D. 180°+45°
Answer:B
A polar plot intersects the unit circle at a point making -45° to the negative real axis then the phase margin of the system is :
A. -45° B. 45° C. 180°-45° D. 180°+45°
Explanation: As the angle is with the negative real axis hence the Phase margin will be 45°.