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Hydraulics and Fluid Mechanics in ME

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

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

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Hydraulics and Fluid Mechanics in ME
If the net positive suction head (NPSH) requirement for the pump is not satisfied, then

Efficiency will be low
Excessive power will be consumed
Cavitation will be formed
No flow will take place

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Hydraulics and Fluid Mechanics in ME
The maximum discharge over a broad crested weir is

0.384 Cd × L × H1/2
1.71 Cd × L × H1/2
1.71 Cd × L × H3/2
0.384 Cd × L × H3/2

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Hydraulics and Fluid Mechanics in ME
A metal with specific gravity of o floating in a fluid of same specific gravity a will

be fully immersed with top surface at fluid surface
sink to bottom
float over fluid
partly immersed

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Hydraulics and Fluid Mechanics in ME
Which of the following pump is successfully used for lifting water from deep wells?

Jet pump
Air lift pump
Centrifugal pump
Reciprocating pump

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Hydraulics and Fluid Mechanics in ME
A flow through an expanding tube at constant rate is called

Steady uniform flow
Steady non-uniform flow
Unsteady non-uniform flow
Unsteady uniform flow

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