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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

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

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Hydraulics and Fluid Mechanics in ME
The most efficient section of a channel is

Square
Triangular
Trapezoidal
Rectangular

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Hydraulics and Fluid Mechanics in ME
Dynamic similarity is said to exist between the model and the prototype, if both of them

Are identical in shape, but differ only in size
None of these
Are equal in size and shape
Have identical velocities

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Hydraulics and Fluid Mechanics in ME
A weir, generally, used as a spillway of a dam is

Broad crested weir
Ogee weir
Narrow crested weir
Submerged weir

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Hydraulics and Fluid Mechanics in ME
The efficiency of power transmission through pipe is (where H = Total supply head, and hf = Head lost due to friction in the pipe)

H/(H + hf )
(H + hf )/H
H/(H - hf )
(H - hf )/H

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Hydraulics and Fluid Mechanics in ME
In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice.

One-third
One-half
One-fourth
Equal to

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