For an undamped single degree of freedom system, resonance occurs when the excitation frequency is
Correct answer: C. Equal or very close to the natural frequency
- A. Much lower than the natural frequency
- B. Twice the damping frequency only
- C. Equal or very close to the natural frequency
- D. Independent of the natural frequency
Explanation
Resonance occurs when the forcing frequency approaches the system's natural frequency. At this condition, the vibration amplitude becomes very large in the ideal undamped model.
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