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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to

1/2 × breadth
1/2 × sloping side
1/4 × (depth + breadth)
1/2 × depth

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Hydraulics and Fluid Mechanics in ME
The point at which the resultant pressure on an immersed surface acts, is known as

Centre of depth
Centre of gravity
Centre of immersed surface
Centre of pressure

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Hydraulics and Fluid Mechanics in ME
Pitot tube is used for measurement of

dsscharge
pressure
flow
velocity

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Hydraulics and Fluid Mechanics in ME
A square surface 3 m × 3 m lies in a vertical line in water pipe its upper edge at water surface. The hydrostatic force on square surface is

9,000 kg
18,000 kg
13,500 kg
27,000 kg

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Hydraulics and Fluid Mechanics in ME
The pressure of fluid due to hammer blow is

Inversely proportional to density of fluid
Directly proportional to (density)1/2 of fluid
Inversely proportional to (density)1/2 of fluid
Directly proportional to density of fluid

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Hydraulics and Fluid Mechanics in ME
The property of fluid by virtue of which it offers resistance to shear is called

surface tension
viscosity
adhesion
cohesion

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