Question:-
Suppose the Nyquist plot of the loop transfer function G(j w)H(j w) for w=0 and w= ¥ for a single-loop feedback control system is shown in Fig. Q.74 The gain K appears as a multiplying factor in G(s) H(s) one pole of G(s) H(s) lies in the right half of s-plane and no pole is on the j w axis.

Which one of the following statements is TRUE in the case of closed-loop stability?
Option (A)
The closed-loop system is stable for 0.25 < K < 0.5
Option (B)
The closed-loop system is stable for K > 0.5
Option(C)
The closed-loop system is unstable for all values of K
Option(D)
The closed-loop system is stable for K = 0.25
Correct Option:
(B)
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