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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The flow in a pipe is neither laminar nor turbulent when Reynold number is

Between 2000 and 2800
Less than 2000
None of these
More than 2800

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

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Hydraulics and Fluid Mechanics in ME
The ratio of absolute viscosity to mass density is known as

viscosity index
kinematic viscosity
coefficient of viscosity
specific viscosity

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Hydraulics and Fluid Mechanics in ME
Rotameter is a device used to measure

rotation
absolute pressure
flow
velocity of fluid

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Hydraulics and Fluid Mechanics in ME
Saving of work done and power by fitting an air vessel to single acting reciprocating pump is of the order of

84.8%
68.8%
49.2%
39.2%

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Hydraulics and Fluid Mechanics in ME
The fluid forces considered in the Navier Stokes equation are

pressure, viscous and turbulent
gravity, pressure and viscous
gravity, pressure and turbulent
gravity, viscous and turbulent

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