Questions about OT Stressed Out
December 30, 2021It’s a biology writing paper.
December 30, 2021
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The maximum vacuum created at the summit of a syphon is
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| A. |
2.7 m of water |
| B. |
7.4 m of water |
| C. |
5.5 m of water |
| D. |
none |
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If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.1 kg/cm2, the pressure at a depth of 2.5 m, is
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| A. |
1 metre of water |
| B. |
2 metres of water |
| C. |
3 metres of water |
| D. |
3.5 metres of water |
| E. |
4.0 metres of water |
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The time required to close a valve gradually is (where L is the length of pipe and C = velocity of pressure wave)
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