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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
When the velocity distribution is uniform over the cross-section, the correction factor for momentum is

1
2
43924

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

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

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Hydraulics and Fluid Mechanics in ME
According to Darcy's formula, the loss of head due to friction in the pipe is (where f = Darcy's coefficient, l = Length of pipe, v = Velocity of liquid in pipe, and d = Diameter of pipe)

4flv²/2gd
flv²/gd
flv²/2gd
3flv²/2gd

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Hydraulics and Fluid Mechanics in ME
The top of the weir over which the water flows is known as

Nappe or vein
Orifice
Sill or crest
None of these

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Hydraulics and Fluid Mechanics in ME
The runaway speed of a hydraulic turbine is the speed

At which there will be no damage to the runner
At which the turbine will run freely without load
Corresponding to maximum overload permissible
At full load

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Hydraulics and Fluid Mechanics in ME
The buoyancy depends upon the

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

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