GATE Electrical 2016 Set 1 | Question: 32

Question

Loop transfer function of a feedback system is $G(s)H(s)=\dfrac{s+3}{s^{2}(s-3)}$. 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