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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A piece weighing 3 kg in air was found to weigh 2.5 kg when submerged in water. Its specific gravity is

6
7
1
5

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Hydraulics and Fluid Mechanics in ME
The upper surface of a weir over which water flows is known is

crest
sill
weir top
nappe

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Hydraulics and Fluid Mechanics in ME
Hydrometer is used to determine

relative humidity
specific gravity of gases
specific gravity of liquids
specific gravity of solids

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Hydraulics and Fluid Mechanics in ME
The critical depth meter is used to measure

Depth of flow in an open channel
Depth of channel
Hydraulic jump
Velocity of flow in an open channel

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Hydraulics and Fluid Mechanics in ME
An internal mouthpiece is said to be running __________ if the length of the mouthpiece is more than three times the diameter of the orifice.

Free
Full
None of these
Partially

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Hydraulics and Fluid Mechanics in ME
In order to avoid cavitation in centrifugal pumps

The suction pressure should be high
The delivery pressure should be high
The delivery pressure should be low
The suction pressure should be low

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