The open loop transfer function G(s) of a unity feedback control syste

1.	The open loop transfer function G(s) of a unity feedback control system is given as,
A.	three roots with nearly equal real parts exist on the left half of the s-plane
B.	one real root is found on the right half of s-plane
C.	the root loci cross the j axis for a finite value of k; k 0
D.	three real roots are found on the right half of the s-plane
Answer» B. one real root is found on the right half of s-plane

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The open loop transfer function G(s) of a unity feedback control system is given as,

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