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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The static head of a centrifugal pump is equal to the _________ of suction head and delivery head.

Difference
Product
None of these
Sum

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Hydraulics and Fluid Mechanics in ME
A hydraulic accumulator is a device used to store _________ energy which may be supplied to a machine later on.

Kinetic
Strain
Pressure
None of these

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Hydraulics and Fluid Mechanics in ME
According to fan laws, at constant weight of air or gas, the speed, capacity and pressure vary

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

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Hydraulics and Fluid Mechanics in ME
The speed ratio in case of Francis turbine varies from

1 to 1.5
0.6 to 0.9
0.4 to 0.5
0.15 to 0.3

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Hydraulics and Fluid Mechanics in ME
The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)

wAx
wA/x
wA
wx

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Hydraulics and Fluid Mechanics in ME
In a centrifugal pump casing, the flow of water leaving the

Vortex
Axial
Radial
Centrifugal

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