Consider a unity negative feedback system with feed forward gain \(G\left( s \right) = \frac{K}{{s\left( {s + 1} \right)\left( {s + 2} \right)}}\)The root-loci of the system cross the imaginary axis at:

Consider a unity negative feedback system with feed forward gain \(G\

1.	Consider a unity negative feedback system with feed forward gain \(G\left( s \right) = \frac{K}{{s\left( {s + 1} \right)\left( {s + 2} \right)}}\)The root-loci of the system cross the imaginary axis at:
A.	\(s = \pm j\sqrt 3 \)
B.	s = ± j2
C.	s = ± j3
D.	\(s = \pm \;j\sqrt 2\)
Answer» E.

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Consider a unity negative feedback system with feed forward gain \(G\left( s \right) = \frac{K}{{s\left( {s + 1} \right)\left( {s + 2} \right)}}\)The root-loci of the system cross the imaginary axis at:

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