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Fluid Mechanics

Fluid Mechanics
Rotary vacuum pumps can reduce the absolute pressure to as low as __________ mm Hg.

1
0.1
0.01
0.001

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Fluid Mechanics
Multistage compressors are used in industry, because they

Reduce the size requirement
Resemble closely to isothermal compression
Reduce the cost of compressor
Are easy to control

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Fluid Mechanics
Water hammer is caused, when water flowing in a pipe is suddenly brought to rest by closing the valve. The extent of pressure thus produced due to water hammer depends on the

Pipe length
Fluid velocity in the pipe
All of these
Time taken to close the valve

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Fluid Mechanics
The ratio of actual discharge to theoretical discharge through an orifice is equal to

Cd/Cv
Cc . Cv
Cv . Cd
Cc . Cd

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Fluid Mechanics
The capacity of an accumulator is the maximum

Liquid which it can store
Energy which it can store
Discharge which it can deliver
None of these

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Fluid Mechanics
If two capillary tubes of dia 0.5 mm and 1 mm are dipped in a pot containing mercury, then the rise of mercury is

Greater in 0.5 mm dia tube
Greater in 1 mm dia tube
Zero in both the tubes
Same in both the tubes

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