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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a

Weir
Mouthpiece
Notch
Nozzle

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Hydraulics and Fluid Mechanics in ME
Metacentric height for small values of angle of heel is the distance between the

centre of buoyancy and metacentre
centre of gravity and centre of buoy-ancy
centre of gravity and metacentre
free surface and centre of buoyancy

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Hydraulics and Fluid Mechanics in ME
Reciprocating pumps are no more to be seen in industrial applications (in comparison to centrifugal pumps) because of

High initial and maintenance cost
Necessity of air vessel
Lower discharge
Lower speed of operation

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Hydraulics and Fluid Mechanics in ME
A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena contracta. The coefficient of contraction is

0.64
0.46
0.78
0.87

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Hydraulics and Fluid Mechanics in ME
The centre of gravity of the volume of the liquid displaced is called

Metacentre
Centre of buoyancy
Centre of pressure
None of the listed here

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

None of these
More than
Same as
Less than

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