1
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
The open loop transfer function of a unity feedback open-loop system is $$\frac{2s^2+6s+5}{\left(s+1\right)^2\left(s+2\right)}$$. The characteristic equation of the closed loop system is
A
$$2s^2+6s+5=0$$
B
$$\left(s+1\right)^2\left(s+2\right)=0$$
C
$$2s^2+6s+5+\left(s+1\right)^2\left(s+2\right)=0$$
D
$$2s^2+6s+5-\left(s+1\right)^2\left(s+2\right)=0$$
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