Stability Theory – 65

65. A polar plot intersects the unit circle at a point making an angle of -45 ˚ with the negative real axis. The phase margin of the system is :

(a) -45˚
(b) 45˚
(c) -180˚ – 45˚
(d) -180˚ + 45˚

Answer : (b)

Explanation : No answer description available for this question. Let us discuss.

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