General Studies · Mechanical Vibrations
Which of the following statements is TRUE for the vibration of a mechanical system?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The amplitude ratio and transmissibility of a vibration isolator are unity when the frequency of the exciting force is √2 times the natural frequency.✓
- 2For damped mechanical systems, the amplitude of vibration tends to become infinity when the excitation frequency (ω) reaches the system's natural frequency (ωn).
- 3The damping can be obtained from the response of the system under forced vibration using the logarithmic decrement method.
- 4Damping ratio (ξ) is the ratio of the critical damping to the actual damping.
Correct answer
The amplitude ratio and transmissibility of a vibration isolator are unity when the frequency of the exciting force is √2 times the natural frequency.
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