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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium.

Neutral
None of these
Unstable
Stable

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Hydraulics and Fluid Mechanics in ME
According to fan laws, at constant speed and capacity, the pressure and power vary

Inversely as density
Directly as the air or gas density
Inversely as square root of density
As square of density

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Hydraulics and Fluid Mechanics in ME
In an immersed body, center of pressure is

could be above or below e.g. depending on density of body and liquid
above the center of gravity
below be center of gravity
at the center of gravity

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Hydraulics and Fluid Mechanics in ME
The ratio of actual work available at the turbine to the energy imparted to the wheel is known as ________ efficiency.

Hydraulic
Overall
None of these
Mechanical

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Hydraulics and Fluid Mechanics in ME
The property by virtue of which a liquid opposes relative motion between its different layers is called

Surface tension
Viscosity
Coefficient of viscosity
Osmosis

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Hydraulics and Fluid Mechanics in ME
A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a

Mouthpiece
Notch
Weir
Nozzle

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