In the unity feedback system shown below, the value of derivative feedback constant a, which will increase the damping ratio of the system to 0.7 is

In the unity feedback system shown below, the value of derivative feed

1.	In the unity feedback system shown below, the value of derivative feedback constant a, which will increase the damping ratio of the system to 0.7 is
A.	0.152
B.	0.245
C.	0.353
D.	0.558
Answer» C. 0.353

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In the unity feedback system shown below, the value of derivative feedback constant a, which will increase the damping ratio of the system to 0.7 is

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