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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to

2700
21000
10000
2100

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Hydraulics and Fluid Mechanics in ME
Which of the following pump is successfully used for lifting water from deep wells?

Centrifugal pump
Air lift pump
Reciprocating pump
Jet pump

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Hydraulics and Fluid Mechanics in ME
A flow whose streamline is represented by a straight line, is called __________ dimensional flow.

Four
One
Two
Three

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Hydraulics and Fluid Mechanics in ME
A glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, α = Angle of contact of the liquid surface, and σ = Surface tension)

4wd/σ cosα
wd/4σ cosα
σ cosα/4wd
4σ cosα/wd

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Hydraulics and Fluid Mechanics in ME
Saving of work done and power by fitting an air vessel to double acting reciprocating pump is of the order of

0.392
0.688
0.848
0.492

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Hydraulics and Fluid Mechanics in ME
Which place in hydraulic turbine is most susceptible for cavitations?

Inlet of draft rube
Blade inlet
Guide blade
Penstock

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