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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of

1.2
0.8
0.75
1

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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)

wH/2
wH2/2
wH
wH2/3

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Hydraulics and Fluid Mechanics in ME
A hydraulic coupling belongs to the category of

Energy generating machines
Power absorbing machines
Power developing machines
Energy transfer machines

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Hydraulics and Fluid Mechanics in ME
The velocity at which the laminar flow stops, is known as

Higher critical velocity
Velocity of approach
None of these
Lower critical velocity

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Hydraulics and Fluid Mechanics in ME
In axial flow fans and turbines, fluid enters and leaves as follows

Axially, axially
Radially, axially
Axially, radially
Radially, radially

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Hydraulics and Fluid Mechanics in ME
When a cylindrical vessel of radius (r) containing liquid is revolved about its vertical axis ω rad/s, then depth of parabola which the liquid assumes is

ω.r/4g
ω.r/2g
ω².r²/4g
ω².r²/2g

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