An inward flow reaction turbine has the following data:

Head available = 25 m

Velocity of flow = 2.5 m/s (constant)

Guide blade angle = 10°

Runner vanes are radial at the inlet and discharge at the outlet is radial. What will be the approximate hydraulic efficiency of the turbine? [ given, tan10∘=0.176, g = 10 m/s²]

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