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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Medium specific speed of turbine implies it is

Any one of the above
Propeller turbine
Impulse turbine
Francis turbine

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Hydraulics and Fluid Mechanics in ME
A hemispherical tank of radius (R) has an orifice of cross-sectional area (a) at its bottom and is full of liquid. The time required to empty the tank completely is

14π R3/2/15Cd × a √(2g)
14π R5/2/15Cd × a √(2g)
14π R1/2/15Cd × a √(2g)
14π R7/2/15Cd × a √(2g)

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Hydraulics and Fluid Mechanics in ME
In an external mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to 0.89 times the height of the liquid, above the vena contracta.

None of these
Equal to
Less than
More than

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Hydraulics and Fluid Mechanics in ME
Manometer is used to measure

very low pressure
difference of pressure between two points
atmospheric pressure
pressure in pipes, channels etc

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Hydraulics and Fluid Mechanics in ME
Two pipe systems can be said to be equivalent, when the following quantites are same

flow and length
friction factor and diameter
length and diameter
friction loss and flow

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Hydraulics and Fluid Mechanics in ME
A double overhung Pelton wheel has

Four runners
Four jets
Two jets
Two runners

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