1.

THE_POLAR_PLOT_OF_THE_OPEN_LOOP_TRANSFER_FUNCTION_OF_A_FEEDBACK_CONTROL_SYSTEM_INTERSECTS_THE_REAL_AXIS_AT_-2._THE_GAIN_MARGIN_OF_THE_SYSTEM_IS?$

A. -5dB
B. 0dB
C. -6dB
D. 40dB
Answer» E.


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