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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as

Ogee weir
Broad-crested weir
Narrow-crested weir
Submerged weir

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Hydraulics and Fluid Mechanics in ME
Which place in hydraulic turbine is most susceptible for cavitations?

Penstock
Inlet of draft rube
Blade inlet
Guide blade

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Hydraulics and Fluid Mechanics in ME
The unit power developed by a turbine is (where P = Power developed by the turbine under a head of water (H).

P/ H²
P/ √H
P/ H3/2
P/ H

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Hydraulics and Fluid Mechanics in ME
If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will

float
None of these
tend to move downward and it may finally sink
rise until its weight equals the buoyant force

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Hydraulics and Fluid Mechanics in ME
The specific speed of a turbine is given by the equation

N√P / H5/4
N√P / H3
N√P / H²
N√P / H3/2

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Hydraulics and Fluid Mechanics in ME
A body floating in a liquid is said to be in neutral equilibrium, if its metacentre

Lies between the centre of buoyancy and centre of gravity
Coincides with its centre of gravity
Lies above its centre of gravity
Lies below its centre of gravity

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