Hydraulics and Fluid Mechanics in ME
Surface tension

Is a function of the curvature of the interface
Is also known as capillarity
Decreases with fall in temperature
Acts in the plane of the interface normal to any line in the surface

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

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

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