Physics · Machine Foundations
As per the Indian Standard Code of practice, the frequency ratio (the ratio of operating frequency of a machine to the natural frequency of the soil) should not lie within which of the following ranges to avoid resonance?
- 13.0 to 6.0
- 21.5 to 3.0
- 31.0 to 2.5
- 40.5 to 1.5✓
Correct answer
0.5 to 1.5
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