Question

In case of a forced vibration, the resonance peak becomes very sharp when the

• A. dampling force is small
• B. restoring force is small
• C. applied periodic force is small
• D. quality factor is small

Answer 1

The correct option is A dampling force is small

$\begin{array}{c}Lessdampingforcegivesatallerandnarrowerresosnancepeak.\\ Resonance-\\ Ifwevarytheangularfrequency\omega oftheappliedforce,thisamplitudechangesnotbecomesmaximum.\\ \omega ={\omega }^{\prime }=\sqrt{{{\omega }_0}^2-\frac{b^2}{4m^2}}\\ wherein,\\ whenthisconditionisfulfilleditiscausedresonance.\end{array}$

Hence,

option $\left(A\right)$ is correct answer.