Hydraulics and Fluid Mechanics in ME
Coefficient of velocity is defined as the ratio of

Actual discharge through an orifice to the theoretical discharge
Area of jet at vena contracta to the area of orifice
None of these
Actual velocity of jet at vena contracta to the theoretical velocity

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Hydraulics and Fluid Mechanics in ME
In an outward flow reaction turbine

The water flows parallel to the axis of the wheel
The water enters at the centre of the wheel and then flows towards the outer periphery of the wheel
The flow of water is partly radial and partly axial
The water enters the wheel at the outer periphery and then flows towards the centre of the wheel

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