EC > GATE 2017 SET-1 > Nyquist Plot
The Nyquist plot of the transfer function G(s)=K/((s2+2s+2)(s+2)) does not encircle the point (-1+j0) for K=10 but does encircle the point (-1+j0) for K=100 Then the closed loop system (having unity gain feedback) is
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

Explanation

Correct : b

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