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Question: a radial flow hydraulic turbine produces 32 kw under a...

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A radial flow hydraulic turbine produces 32 kW under a head of 16m and running at 100 rpm. A geometrically similar model producing 42 kW and a head of 6 m is to be tested under geometrically similar conditions. If model efficiency is assumed to be 92%, find the diameter ratio between the model and prototype, the volume flow rate through the model, and speed of the model.
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