GATE ECE 1999 | Question 1.17

Question

The phase margin (in degrees) of a system having the loop transfer function
\[
\mathrm{G}(s) \mathrm{H}(s)=\frac{2 \sqrt{3}}{s(s+1)} \text { is }
\]

• A. $45^{\circ}$
• B. $-30^{\circ}$
• C. $60^{\circ}$
• D. $30^{\circ}$