GATE IN 2022 IN Q43: Control Systems

The Nyquist plot of a stable open-loop system

is plotted in the frequency range

as shown. It is found to intersect a unit circle with center at the origin at the point

. The points

and

lie on

and assume values

and

. The phase margin (PM) and the gain margin (GM) of the system are ______

Your answerChoose one option.

PM = 39.7° and GM = 4.76

PM = 39.7° and GM = 0.07

PM = −39.7° and GM = 4.76

PM = −39.7° and GM = 0.07

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