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1. |
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» C. 180¬¨¬®‚Äö√†√ª-45¬¨¬®‚Äö√†√ª | |