Loop transfer function of a feedback system is \(G\left( s \right)H\le – McqOptions

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1.	Loop transfer function of a feedback system is \(G\left( s \right)H\left( s \right) = \frac{{s + 3}}{{{s^2}\left( {s - 3} \right)}}\;.\) Take the Nyquist contour in the clockwise direction. Then, the Nyquist plot of G(s) H(s) encircles \(- 1 + j0\)
A.	once in clockwise direction
B.	twice in clockwise direction
C.	once in anticlockwise direction
D.	twice in anticlockwise direction
Answer» B. twice in clockwise direction

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