The open loop transfer function of a unity feedback control system is given by G (s) = K(s + 2)s(s2 + 2s + 2)The centroid and angles of root locus asymptotes are respectively

The open loop transfer function of a unity feedback control system is

1.	The open loop transfer function of a unity feedback control system is given by G (s) = K(s + 2)s(s2 + 2s + 2)The centroid and angles of root locus asymptotes are respectively
A.	zero and + 90 , 90
B.	2/3 and + 60 , 60
C.	zero and + 120 , 120
D.	2/3 and 90 and 90 , + 90
Answer» B. 2/3 and + 60 , 60

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The open loop transfer function of a unity feedback control system is given by G (s) = K(s + 2)s(s2 + 2s + 2)The centroid and angles of root locus asymptotes are respectively

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