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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The distance y from pipe boundary, at which the point velocity is equal to average velocity for turbulent flow, is (where R is radius of pipe)

0.423 R
0.707 R
0.223 R
0.577 R

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Hydraulics and Fluid Mechanics in ME
Stream lines and path lines always coincide in case of

steady flow
uniform flow
laminar flow
turbulent flow

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Hydraulics and Fluid Mechanics in ME
The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.

More than
Equal to
Less than
None of these

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Hydraulics and Fluid Mechanics in ME
In an immersed body, center of pressure is

at the center of gravity
below be center of gravity
above the center of gravity
could be above or below e.g. depending on density of body and liquid

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

Broad crested weir
Submerged weir
Ogee weir
Narrow crested weir

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Hydraulics and Fluid Mechanics in ME
The discharge over a right angled notch is (where H = Height of liquid above the apex of notch)

(8/15) Cd. 2g. H²
(8/15) Cd. 2g. H
(8/15) Cd. 2g. H3/2
(8/15) Cd. 2g. H5/2

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