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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The variation in the volume of a liquid with the variation of pressure is called its

Viscosity
Surface tension
Compressibility
Capillarity

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

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

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Hydraulics and Fluid Mechanics in ME
When a piping system is made up primarily of friction head and very little of vertical lift, then pump characteristics should be

Nearly horizontal
First rise and then fall
Horizontal
Steep

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Hydraulics and Fluid Mechanics in ME
Bulk modulus of a fluid __________ as the pressure increases.

Remain same
None of these
Increases
Decreases

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Hydraulics and Fluid Mechanics in ME
A body floats in stable equilibrium

When the metacentre is above e.g.
When its e.g. is below its center of buoyancy
Metacentre has nothing to do with position of e.g. for determining stability
When its meatcentric height is zero

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

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

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