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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A flow is called hyper-sonic, if the Mach number is

Unity
Less than unity
None of these
Between 1 and 6

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Hydraulics and Fluid Mechanics in ME
A double overhung Pelton wheel has

Two runners
Four runners
Four jets
Two jets

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

First rise and then fall
Horizontal
Steep
Nearly horizontal

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Hydraulics and Fluid Mechanics in ME
Working principle of dead weight pressure gauge tester is based on

Avogadro’s hypothesis
Pascal’s law
Dalton’s law of partial pressure
Newton’s law of viscosity

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Hydraulics and Fluid Mechanics in ME
The eddy viscosity for turbulent flow is

a physical property of the fluid.
independent of the flow
dependent on the flow
a function of temperature only

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

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

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