1. |
Critical speed is expressed as ______.
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Answer:
Option (d) |
2. |
The factor which affects the critical speed of a shaft is
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Answer:
Option (d) |
3. |
The speed at which the shaft runs so that the additional deflection of the shaft from the axis of rotation becomes ___________ is known as critical or whirling speed.
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Answer:
Option (d) |
4. |
The critical speed may occur because of __________.
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Answer:
Option (d) |
5. |
The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in
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Answer:
Option (c) |
6. |
When the centre of gravity of the rotor lies between the centre line of the shaft and the centre line of the bearing, e is taken as positive.
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Answer:
Option (b) |
7. |
The first critical speed of an automobile running on a sinusoidal road is calculated by ______.
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Answer:
Option (a) |
8. |
A shaft supported in ball bearings is assumed to be simply supported.
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Answer:
Option (a) |