Engineering :: Fluid Mechanics and Hydraulic Machines

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In a reaction turbine

[A].	It is possibel to regulate the flow without loss	[B].	It must be placed at the foot of the fall and above the tail race
[C].	Work done is purely by the change in the kinetic energy of the jet	[D].	Only part of the head is converted into velocity before the water enters the wheel
[E].	None of the above

Answer: Option D