| 21. |
In steam and gas turbines, rolling contact bearings are used.
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Answer:
Option (b) |
| 22. |
For crank shaft bearings, the ratio of the length of the journal to its diameter is less than unity.
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Answer:
Option (a) |
| 23. |
Which following is (are) the example(s) of Plain bearing(s)?
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Answer:
Option (d) |
| 24. |
Which following type(s) of bearing(s) have no rolling element?
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Answer:
Option (d) |
| 25. |
When the shaft rotates in anticlockwise direction at high speed in a bearing, it will
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Answer:
Option (c) |
| 26. |
A sliding bearing in which the working surfaces are completely separated from each other by lubricant is called zero film bearing.
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Answer:
Option (b) |
| 27. |
The lubrication in which a load of bearing is carried solely by a film of fluid and there is no contact between the two bearings surface is called
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Answer:
Option (a) |
| 28. |
The lubrication in which a load of bearing is carried partly by a film of fluid and partly by direct surface contact is called
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Answer:
Option (b) |
| 29. |
In a boundary lubricated bearing, there is a __________ of lubricant between the journal and the bearing.
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Answer:
Option (b) |
| 30. |
When a load of bearing is carried by direct surface to surface contact is called
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Answer:
Option (c) |