The open-loop transfer function of a unity feedback system is \(G\left( s \right) = \frac{K}{{s\left( {s + 5} \right)}}.\) The gain K that results in a phase margin of 45° is

The open-loop transfer function of a unity feedback system is \(G\left

1.	The open-loop transfer function of a unity feedback system is \(G\left( s \right) = \frac{K}{{s\left( {s + 5} \right)}}.\) The gain K that results in a phase margin of 45° is
A.	35
B.	30
C.	25
D.	20
Answer» B. 30