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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Specific speed for reaction turbines ranges from

250 to 300
80 to 200
10 to 100
0 to 4.5

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Hydraulics and Fluid Mechanics in ME
A nozzle is generally made of

Convergent-divergent shape
Divergent shape
Cylindrical shape
Convergent shape

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Hydraulics and Fluid Mechanics in ME
The magnitude of water hammer depends upon the

Elastic properties of the liquid flowing through the pipe
Elastic properties of the pipe material
All of these
Speed at which the valve is closed

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

More than
Less than
Same as
None of these

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Hydraulics and Fluid Mechanics in ME
The unit power developed by a turbine is (where P = Power developed by the turbine under a head of water (H).

P/ H3/2
P/ H
P/ √H
P/ H²

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Hydraulics and Fluid Mechanics in ME
For very great pressures, viscosity of moss gases and liquids

increases
shows erratic behaviour
decreases
remains same

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