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Fluid Mechanics

Fluid Mechanics
A hydraulic ram acts as a/an __________ pump.

Impulse
Reciprocating
Parallel cylinder
Centrifugal

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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

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

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Fluid Mechanics
Two dimensional stream function

Is constant along an equipotential surface
None of these
Relates velocity and pressure
Is constant along a stream line

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Fluid Mechanics
Reynolds number for flow of water at room temperature through 2 cm dia pipe at an average velocity of 5 cm/sec is around

10
2000
100
1000

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Fluid Mechanics
Permanent loss in a venturimeter is about __________ percent of the pressure drop in theupstream cone.

70
40
10
1

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Fluid Mechanics
For a stable equilibrium of a submerged body (where, G and B are centres of gravity & buoyancy respectively).

B & G coincide
B is above G
None of these
G is above B

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