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| Q. |
In vibration analysis 'Beat' frequency is |
| A. | The frequency at which vibrations of a system are damped |
| B. | Said to occur when two vibrations of almost equal frequency are present |
| C. | The frequency when a system exceeds the vibrations frequency from the critical value |
| D. | The frequency below which vibrations do not cause appreciable damage to equipment |
| E. | One at which the vibrations of a system act exactly opposite to the other thereby causing damping |
| Answer» B. Said to occur when two vibrations of almost equal frequency are present | |
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