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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The coefficient of discharge for an external mouthpiece depends upon

Area of mouthpiece
Length of mouthpiece
Pressure of liquid
Velocity of liquid

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Hydraulics and Fluid Mechanics in ME
Saving of work done and power by fitting an air vessel to double acting reciprocating pump is of the order of

0.492
0.688
0.848
0.392

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Hydraulics and Fluid Mechanics in ME
The ratio of the inertia force to the viscous force is called

Froude's number
Weber's number
Euler's number
Reynold's number

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Hydraulics and Fluid Mechanics in ME
The value of mass density in kgsecVm4 for water at 0°C is

1000
1
100
101.9

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Hydraulics and Fluid Mechanics in ME
In an isothermal atmosphere, the pressure

increases exponentially with elevation
varies in the same way as the density
decreases linearly with elevation
remains constant

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Hydraulics and Fluid Mechanics in ME
Impulse turbine is generally fitted

About 2.5 m above the tail race to avoid cavitations
At the level of tail race
Slightly below the tail race
Little above the tail race

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