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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The ratio of the normal force of jet of water on a plate inclined at an angle of 30° as compared to that when the plate is normal to jet, is

1
43832
1/√2
√2

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Hydraulics and Fluid Mechanics in ME
The hydraulic grade line is

always above the centre line of pipe
never above the energy grade line
always sloping downward in the direction of flow
All of these

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Hydraulics and Fluid Mechanics in ME
The tendency of a liquid surface to contract is due to the following property

adhesion
cohesion
viscosity
surface tension

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Hydraulics and Fluid Mechanics in ME
Any change in load is adjusted by adjusting following parameter on turbine

Net head
Flow
Absolute velocity
Blade velocity

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Hydraulics and Fluid Mechanics in ME
Ratio of inertia force to elastic force is known as

Froude number
Reynold’s number
Mach number
Weber’s number

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Hydraulics and Fluid Mechanics in ME
A weir is said to be broad crested weir, if the width of the crest of the weir is ________ half the height of water above the weir crest.

More than
None of these
Equal to
Less than

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