A unit gain 2nd order underdamped process has a period of oscillation 1 second

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A unit gain 2nd order underdamped process has a period of oscillation 1 second and decay ratio 0.25. The transfer function of the process is

Options:

A . 1/(0.024 s2 +0.067 s + 1)

B . 1/(0.067 s2 + 0.024 s + 1)

C . 1/(0.021 s2 + 0.1176 s + 1)

D . 1/(0.1176 s2 + 0.021 s + 1)

Answer: Option A

-NA-

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