Concept drill
encirclements
GATE Electronics & Communication · Frequency Response · 2016-2016
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The number and direction of encirclements around the point −1 + j0 in the complex plane by the Nyquist plot of G(s) =$${{1 - s} \over {4 + 2s}}$$ is
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2016 PYQ
A closed-loop control system is stable if the Nyquist plot of the corresponding open-loop transfer function
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