Design of Reinforced Concrete structures (3160612) MCQs
MCQs of Earthquake Resistant Design of building
| 21. |
A body of mass 20 kg is suspended from a spring which deflects 20mm under this load. Calculate the frequency of free vibrations in Hz.
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Answer:
Option (a) |
| 22. |
In which of the cases the factor c = 0?
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Answer:
Option (b) |
| 23. |
Magnification factor is the ratio of the maximum displacement due to forced vibrations to the deflection due to _________
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Answer:
Option (a) |
| 24. |
Calculate critical damping coefficient in N/m/s from the following data: mass = 100 Kg ω = 10 rad/s
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Answer:
Option (a) |
| 25. |
Calculate critical damping coefficient in N·s/m from the following data. mass = 200 Kg ω = 20 rad/s
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Answer:
Option (a) |
| 26. |
The ratio of the actual damping coefficient (c) to the critical damping coefficient (cc) is known as _________
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Answer:
Option (a) |
| 27. |
What is meant by critical damping coefficient?
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Answer:
Option (b) |
| 28. |
In damped free vibrations, which parameters indicate vibrations?
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Answer:
Option (c) |
| 29. |
Calculate logarithmic decrement if damping factor is 0.33.
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Answer:
Option (d) |
| 30. |
Calculate natural frequency of damped vibration, if damping factor is 0.52 and natural frequency of the system is 30 rad/sec which consists of machine supported on springs and dashpots.
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Answer:
Option (a) |
