Question: The root locus of a unity feedback system is shown in the figure below. The open-loop transfer function of the system is (a) (c) K

The root locus of a unity feedback system is shown in the figure below. The open-loop transfer function of the system is

(a) (c) K s(s+1)(s+3) K(s+3) s(s+1) + 3-2-1 (b) (d) jo s-plane

(a) (c) K s(s+1)(s+3) K(s+3) s(s+1) + 3-2-1 (b) (d) jo s-plane K(s+1) s(s+3) O Ks (s+1)(s+3)

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