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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The specific weight of water is 1000 kg/m3

At normal pressure of 760 mm
At 4°C temperature
All of the listed here
At mean sea level

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Hydraulics and Fluid Mechanics in ME
The jet ratio is defined as the ratio of the

Diameter of jet to the diameter of Pelton wheel
Diameter of Pelton wheel to the diameter of jet
Velocity of Pelton wheel to the velocity of jet
Velocity of jet to the velocity of Pelton wheel

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

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Hydraulics and Fluid Mechanics in ME
Centre of buoyancy always

coincides with the centre of gravity
coincides with the centroid of the volume of fluid displaced
remains below the centre of gravity
remains above the centre of gravity

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Hydraulics and Fluid Mechanics in ME
Size of a venturimeter is specified by

pipe diameter
throat diameter
both pipe diameter as well as throat diameter
angle of diverging section

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Hydraulics and Fluid Mechanics in ME
A thick liquid like syrup has a ___ viscosity than a light liquid like water.

Greater
Same
None of the listed here
Lesser

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