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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
An opening in the side of a tank or vessel such that the liquid surface with the tank is below the top edge of the opening, is called

Orifice
Notch
None of these
Weir

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Hydraulics and Fluid Mechanics in ME
The discharge over a rectangular notch is

Directly proportional to H3/2
Inversely proportional to H3/2
Directly proportional to H5/2
Inversely proportional to H5/2

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Hydraulics and Fluid Mechanics in ME
The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)

16μvl/wd²
8μvl/wd²
32μvl/wd²
4μvl/wd²

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

Radial flow
Forced vortex
Rectilinear flow
Free vortex motion

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Hydraulics and Fluid Mechanics in ME
In impulse Turbine, energy available at the inlet is in the form of

Potential Energy
Strain Energy
Kinetic energy
None of these

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Hydraulics and Fluid Mechanics in ME
When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is

1.84(L - 0.1nH)H3/2
1.84(L - nH)H3
1.84(L - 0.1nH)H5/2
1.84(L - nH)H2

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