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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Head developed by a centrifugal pump depends on

Speed
Both (A) and (B) above
Fluid density
Impeller diameter

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Hydraulics and Fluid Mechanics in ME
When the Mach number is less than unity, the flow is called

Sonic flow
Hyper-sonic flow
Sub-sonic flow
Super-sonic flow

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Hydraulics and Fluid Mechanics in ME
An open tank containing liquid is moving with an acceleration on an inclined plane. The inclination of the free surface of the liquid will be __________ to the acceleration of the tank.

Equal to
Inversely proportional
Directly proportional
None of these

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Hydraulics and Fluid Mechanics in ME
The runaway speed of a hydraulic turbine is the speed

At full load
Corresponding to maximum overload permissible
At which the turbine will run freely without load
At which there will be no damage to the runner

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Hydraulics and Fluid Mechanics in ME
According to Bernoulli's equation

Z - p/w + v²/2g = constant
Z - p/w - v²/2g = constant
Z + p/w - v²/2g = constant
Z + p/w + v²/2g = constant

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Hydraulics and Fluid Mechanics in ME
An ideal flow of any fluid must fulfill the following

Newton’s law of viscosity
Continuity equation
Pascal’ law
Newton’s law of motion

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