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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Which of the following turbine is preferred for 0 to 25 m head of water?

Pelton wheel
Francis turbine
Kaplan turbine
None of these

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Hydraulics and Fluid Mechanics in ME
According to fan laws, at constant pressure, the speed capacity and power vary

As square of density
Inversely as density
Inversely as square root of density
Directly as the air or gas density

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Hydraulics and Fluid Mechanics in ME
The specific weight of sea water is __________ that of pure water.

More than
None of these
Less than
Same as

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Hydraulics and Fluid Mechanics in ME
Which of the following has highest coefficient of discharge ?

venturimeter
CipoUetti weir
Borda’s mouthpiece running full
sharp edged orifice

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Hydraulics and Fluid Mechanics in ME
A point, in a compressible flow where the velocity of fluid is zero, is called

Critical point
Stagnation point
None of the listed here
Vena contracta

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Hydraulics and Fluid Mechanics in ME
A model of a reservior is drained in 4 mts by opening the sluice gate. The model scale is 1: 225. How long should it take to empty the prototype ?

4 x V225 minutes
4 (225)1/3 minutes
4 x (225)3/2 minutes
4 minutes

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