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Hydraulics and Fluid Mechanics in ME

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

shows erratic behaviour
remains same
decreases
increases

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Hydraulics and Fluid Mechanics in ME
The width of the bucket for a Pelton wheel is generally ________ the diameter of jet.

Double
Three times
Four times
Five times

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Hydraulics and Fluid Mechanics in ME
For hydro-dynamically smooth boundary, the friction coefficient for turbulent flow is

dependent only on Reynolds number
a function of Reynolds number and relative roughness
constant
dependent on relative roughness only

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Hydraulics and Fluid Mechanics in ME
When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is

1.84(L - nH)H2
1.84(L - 0.1nH)H5/2
1.84(L - nH)H3
1.84(L - 0.1nH)H3/2

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Hydraulics and Fluid Mechanics in ME
Capillary action is due to the

All of the listed here
Surface tension
Cohesion of the liquid
Adhesion of the liquid molecules and the molecules on the surface of a solid

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Hydraulics and Fluid Mechanics in ME
The Francis formula for the discharge over Cipoletti weir is

1.84 LH1/2
1.84 LH
1.84 LH5/2
1.84 LH3/2

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