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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The impeller of a centrifugal pump may have

Volute casing
Volute casing with guide blades
Vortex casing
Any one of these

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Hydraulics and Fluid Mechanics in ME
According to Bazin's formula, the discharge over a rectangular weir is mL2g x H3/2 where m is equal to

0.405 + (0.003/H)
0.003 + (0.405/H)
0.003 + (H/0.405)
0.405 + (H/0.003)

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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

Notch
Weir
None of these
Orifice

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Hydraulics and Fluid Mechanics in ME
Viscous force is the __________ of shear stress due to viscosity and cross-section area of flow.

Sum
Ratio
Product
Different

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Hydraulics and Fluid Mechanics in ME
Discharge (Q) of a centrifugal pump is given by (where D = Diameter of impeller at inlet, b = Width of impeller at inlet, and Vf = Velocity of flow at inlet)

Q = π.D.bf.V
Q = D.b.Vf
Q = π.D.Vf
Q = π.b.Vf

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Hydraulics and Fluid Mechanics in ME
Water is _________ liquid.

None of these
An incompressible
Both A and B
A compressible

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