Amplitude ratio for steady-state equation

Q.  Consider the steady-state absolute amplitude equation shown below, if ω / ωn = √2  then amplitude ratio (X/Y) =?

(X/Y) = √{1 + [ 2ξ (ω/ωn)]2} / √{[1 – (ω/ωn)2]2  + {2ξ (ω/ωn)2}
- Published on 10 Sep 15

a. 0
b. 1
c. less than 1
d. greater than 1

ANSWER: 1

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