EC > GATE 2014 SET-1 > Compensation
For the following feedback system G(s) = 1/[(s+1)(s+2)]. The 2%-settling time of the step response is required to be less than 2 seconds. Which one of the following compensators C(s) achieves this?
A
3(1/(s+5))
B
5(0.03s + 1)
C
2(s + 4)
D
4((s+8)/(s+3))

Correct : 2(s + 4)

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