MCQOPTIONS
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| 1. |
When a system is subjected to forced vibrations, then under steady-state conditions |
| A. | it vibrates at its natural frequency |
| B. | it vibrates at the imposed frequency |
| C. | it vibrates at the mean of natural and imposed frequencies |
| D. | none of these |
| Answer» C. it vibrates at the mean of natural and imposed frequencies | |