Hydraulics and Fluid Mechanics in ME
The total head of a liquid particle in motion is equal to

Pressure head - (kinetic head + potential head)
Pressure head + kinetic head + potential head
Kinetic head - (pressure head + potential head)
Potential head - (pressure head + kinetic head)

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Hydraulics and Fluid Mechanics in ME
The hydraulic efficiency of an impulse turbine is the

Ratio of the actual power produced by the turbine to the energy actually supplied by the turbine
None of these
Ratio of the actual work available at the turbine to the energy imparted to the wheel
Ratio of the work done on the wheel to the energy of the jet

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Hydraulics and Fluid Mechanics in ME
The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface)

(IG/x̅) - Ax̅
(Ax̅/IG) + x̅
(IG/Ax̅) - x̅
(IG/Ax̅) + x̅

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