Electrical Engineering > GATE 2022 > Nyquist Stability Criterion
The open loop transfer function of a unity gain negative feedback system is given as G(s) = 1/(s(s+1)).
The Nyquist contour in the s-plane encloses the entire right half plane and a small neighbourhood around the origin in the left half plane, as shown in the figure below. The number of encirclements of the point (-1+j0) by the Nyquist plot of G(s), corresponding to the Nyquist contour, is denoted as N. Then N equals to
Correct : b
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