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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A turbine develops 10000 kW under a head of 25 meters at 135 r.p.m. Its specific speed is

275.4 r.p.m
215.5 r.p.m.
175.4 r.p.m.
241.5 r.p.m.

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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

Vena contracta
Critical point
None of the listed here
Stagnation point

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Hydraulics and Fluid Mechanics in ME
The losses are more in

laminar flow
critical flow
turbulent flow
transition flow

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

Inlet of draft rube
Penstock
Blade inlet
Guide blade

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Hydraulics and Fluid Mechanics in ME
In a free vortex motion, the radial component of velocity everywhere is

minimum
non-zero and finite
zero
maximum

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Hydraulics and Fluid Mechanics in ME
When the velocity distribution is uniform over the cross-section, the correction factor for momentum is

1
43924
2

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