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Hydraulics and Fluid Mechanics in ME

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

Jet pump
Reciprocating pump
Air lift pump
Centrifugal pump

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Hydraulics and Fluid Mechanics in ME
A nozzle placed at the end of a water pipe line discharges water at a

High pressure
Low pressure
High velocity
Low velocity

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Hydraulics and Fluid Mechanics in ME
The process of diffusion of one liquid into the other through a semi-permeable membrane is called

surface tension
osmosis
viscosity
cohesion

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Hydraulics and Fluid Mechanics in ME
Coefficient of discharge for a totally submerged orifice as compared to that for an orifice discharging free is

slightly more
nearly half
equal
slightly less

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Hydraulics and Fluid Mechanics in ME
For hydro-dynamically smooth boundary, the friction coefficient for turbulent flow is

a function of Reynolds number and relative roughness
constant
dependent on relative roughness only
dependent only on Reynolds number

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Hydraulics and Fluid Mechanics in ME
Which of the following statement is correct as regard to water wheels?

They are suitable even for low water heads
All of these
They have slow speeds
They give constant efficiency, even if the discharge is not constant

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