Question: A unity feedback system has a loop transfer function (a) Sketch the root locus for K > 0 (b) Find the roots when K =

A unity feedback system has a loop transfer functionL(s) = KG(s) = K(s + 1) S + s +2

(a) Sketch the root locus for K > 0

(b) Find the roots when K = 2 and 3

(c) Compute the rise time, percent overshoot, and settling time (with a 2% criterion) of the system for a unit step input when K = 2 and 3.

L(s) = KG(s) = K(s + 1) S + s +2

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