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For an under damped harmonic oscillator, resonance

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+1 vote
in Machine Kinematics by (38.0k points)
For an under damped harmonic oscillator, resonance

(a) occurs when excitation frequency is greater than undamped natural frequency

(b) occurs when excitation frequency is less than undamped natural frequency

(c) occurs when excitation frequency is equal to undamped natural frequency

(d) never occurs

This question was addressed to me during a job interview.

My question is taken from Bifilar and Trifilar Suspension topic in division Simple Harmonic Motion of Machine Kinematics

1 Answer

0 votes
by (106k points)
Correct choice is (c) occurs when excitation frequency is equal to undamped natural frequency

The explanation: For an under damped harmonic oscillator resonance occurs when excitation frequency is equal to the undamped natural frequency

ωd = ωn.

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