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Fluid Mechanics

Fluid Mechanics
The ratio of actual discharge to theoretical discharge through an orifice is equal to

Cc . Cd
Cc . Cv
Cd/Cv
Cv . Cd

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Fluid Mechanics
The most suitable flow measuring device for the fluid flow measurement in a very large diameter pipeline is a

V-notch
Weir
Kennison nozzle
Pitot tube

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Fluid Mechanics
Bernoulli's equation is not applicable, when the flow is

Viscous
Incompressible
Irrotational
All of these

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Fluid Mechanics
Boundary layer separation occurs when the

Pressure reaches a minimum
Valve is closed in a pipeline
Cross-section of the channel is reduced
Velocity of sound is reached

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Fluid Mechanics
Priming of a centrifugal pump is done to

Avoid chances of separation inside the impeller
Develop effective pressure rise by the pump
None of these
Increase the mass flow rate of fluid

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Fluid Mechanics
The equivalent diameter for flow through a rectangular duct of width B and height H is

2HB/(H + B)
HB/(H + B)
HB/2(H + B)
4HB/(H + B)

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