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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall per unit length is (where w = Specific weight of liquid, and H = Height of liquid)

wH2/3
wH
wH/2
wH2/2

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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

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

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Hydraulics and Fluid Mechanics in ME
The discharge through an external mouthpiece is given by (where a = Cross-sectional area of the mouthpiece, and H = Height of liquid above the mouthpiece)

1.585 a.√(2gH)
0.855 a.√(2gH)
5.85 aH.√(2g)
1.855 aH.√(2g)

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Hydraulics and Fluid Mechanics in ME
Property of a fluid by which molecules of different kinds of fluids are attracted to each other is called

cohesion
compressibility
adhesion
viscosity

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Hydraulics and Fluid Mechanics in ME
Center of pressure on an inclined plane is

Below the Centroid
At metacentre
At the Centroid
Above the Centroid

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Hydraulics and Fluid Mechanics in ME
The surface tension of mercury at normal temperature is __________ that of water.

None of these
Same as
Higher than
Lower than

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