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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The gross or total head of the turbine is the ___________ of the water levels at the head race and tail race.

Difference
Sum
Product
None of these

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Hydraulics and Fluid Mechanics in ME
The force per unit length is the unit of

Compressibility
Viscosity
Capillarity
Surface tension

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Hydraulics and Fluid Mechanics in ME
The pressure measured with the help of a Piezometer tube is in

Head of liquid
N/mm2
N/m2
All of these

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Hydraulics and Fluid Mechanics in ME
In centrifugal pumps, maximum efficiency is obtained when the blades are

Straight
Bent backward
Radial
Bent forward

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Hydraulics and Fluid Mechanics in ME
A channel is said to be of most economical cross-section, if

It gives maximum discharge for a given cross-sectional area and bed slope
It involves lesser excavation for the designed amount of discharge
All of these
It has minimum wetted perimeter

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Hydraulics and Fluid Mechanics in ME
Piezometer is used to measure

Very low pressures
Pressure in pipe, channels etc
Difference of pressure between two points
Atmospheric pressure

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