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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The two important forces for a floating body are

buoyancy, inertial
inertial, gravity
buoyancy, gravity
buoyancy, pressure

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Hydraulics and Fluid Mechanics in ME
The shear stress between the two liquid layers is __________ proportional to the distance between two layers.

Both A and B
Directly
None of these
Inversely

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Hydraulics and Fluid Mechanics in ME
A body floating in a liquid is said to be in neutral equilibrium, if its metacentre

Lies above its centre of gravity
Lies between the centre of buoyancy and centre of gravity
Coincides with its centre of gravity
Lies below its centre of gravity

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Hydraulics and Fluid Mechanics in ME
The vapour pressure over the concave surface is

greater than the vapour pressure over the plane surface
less man the vapour pressure over the plane surface
equal to the vapour pressure over the plane surface
zero

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Hydraulics and Fluid Mechanics in ME
For pipes, laminar flow occurs when Reynolds number is

More than 4000
Less than 4000
Between 2000 and 4000
Less than 2000

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

Lower than
None of these
Same as
Higher than

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