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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?

Kaplan turbine
Pelton wheel
None of these
Francis turbine

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Hydraulics and Fluid Mechanics in ME
For hypersonic flow, the Mach number is

greater than unity
greater than 4
unity
greater than 2

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Hydraulics and Fluid Mechanics in ME
The factional resistance of a pipe varies approximately with __________ of the liquid.

Velocity
Pressure
Cube of velocity
Square of velocity

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Hydraulics and Fluid Mechanics in ME
The stress-strain relation of the newtoneon fluid is

parabolic
inverse type
hyperbolic
linear

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Hydraulics and Fluid Mechanics in ME
The ratio of the normal force of jet of water on a plate inclined at an angle of 30° as compared to that when the plate is normal to jet, is

1
√2
1/√2
43832

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Hydraulics and Fluid Mechanics in ME
The unit speed of the turbine runner is

N/H3/2
N/H
N/√H
N/H²

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