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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The overall efficiency for a Pelton wheel lies between

0.65 to 0.75
0.75 to 0.85
0.50 to 0.65
0.85 to 0.90

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Hydraulics and Fluid Mechanics in ME
Which of the following pump is successfully used for lifting water to the boilers?

Airlift pump
Centrifugal pump
Reciprocating pump
Jet pump

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Hydraulics and Fluid Mechanics in ME
A fluid whose viscosity does not change with the rate of deformation or shear strain is known as

Non-Newtonian fluid
Newtonian fluid
Ideal fluid
Real fluid

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Hydraulics and Fluid Mechanics in ME
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge

0.75 Q
1.5 Q
Same quantity of liquid
Q/0.75

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Hydraulics and Fluid Mechanics in ME
The continuity equation is connected with

Conservation of mass
Compressibility of fluids
Open channel/pipe flow
Steady/unsteady flow

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Hydraulics and Fluid Mechanics in ME
A flow in which the volume of a fluid and its density does not change during the flow is called _________ flow.

Compressible
Incompressible
Viscous
None of these

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