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Automatic Control Systems

Q1: For a second order system damping factor is 0.1. If ωd is frequency of damped oscillations and ωn is natural frequency, then

A ωd ≈ ωn

B

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ωn ≈ ωn

D ωd ≈ (ωn)2

ANS:A - ωd ≈ ωn

ωd = ωn(1 - 0.1)2 ⋍ ωn



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