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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The specific weight of sea water is __________ that of pure water.

Less than
More than
Same as
None of these

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Hydraulics and Fluid Mechanics in ME
Units of surface tension are

energy/unit area
it has no units
both of the above
distance

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Hydraulics and Fluid Mechanics in ME
The ratio of quantity of liquid discharged per second from the pump to the quantity of liquid passing per second through the impeller is known as

Manometric efficiency
Volumetric efficiency
Overall efficiency
Mechanical efficiency

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Hydraulics and Fluid Mechanics in ME
The buoyancy depends upon the

Compressibility of the liquid
Weight of the liquid displaced
Pressure with which the liquid is displaced
Viscosity of the liquid

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Hydraulics and Fluid Mechanics in ME
The discharge through a channel of rectangular section will be maximum, if

Its breadth is twice the depth
Its depth is thrice the breadth
Its breadth is thrice the depth
Its depth is twice the breadth

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Hydraulics and Fluid Mechanics in ME
According to Bazin's formula, the discharge over a rectangular weir is mL2g x H3/2 where m is equal to

0.003 + (0.405/H)
0.003 + (H/0.405)
0.405 + (0.003/H)
0.405 + (H/0.003)

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