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Hydraulics and Fluid Mechanics in ME

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 an internal mouthpiece, if the jet after contraction does not touch the sides of the mouthpiece, then the mouthpiece is said to be

Partially running full
Running free
Partially running free
Running full

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Hydraulics and Fluid Mechanics in ME
The force of buoyancy is always __________ the weight of the liquid displaced by the body.

Equal to
Less than
None of these
More than

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Hydraulics and Fluid Mechanics in ME
In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice.

One-third
One-half
Equal to
One-fourth

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Hydraulics and Fluid Mechanics in ME
Which of the following hydraulic unit is used for transmitting increased or decreased torque to the driven shaft?

Hydraulic torque converter
Hydraulic ram
Hydraulic accumulator
Hydraulic intensifier

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

Pressure
Cube of velocity
Square of velocity
Velocity

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