The Nyquist plot of the transfer function G(s) = does n

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59

M: +2.00/-0.66

The Nyquist plot of the transfer function G(s) = does not encircle the point (1+j0) for K=10 but does encircle the point (-1+j0) for K=100. The the closed loop system (having unity gain feedback) is

[GATE EC 2017 Set 1]

A stable for K = 10 and stable for K = 100

B stable for K = 10 and unstable for K = 100

C unstable for K = 10 and stable for K =100

D unstable for K = 10 and unstable for K = 100