GATE Electrical Engineering (EE) 2022 Solved Paper

The open loop transfer function of unity gain negative feedback system is given as
$\mathit{G}\left(\mathit{s}\right)=\frac{1}{\mathit{s}\left(\mathit{s}+1\right)}$
The Nyquist contour in the 𝑠-plane encloses the entire right half plane and a small neighborhood around the origin in the left half plane, as shown in the figure below. The number of encirclements of the point (−1 + j0) by the Nyquist plot of G(s), corresponding to the Nyquist contour, is denoted as N. Then N equals to