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The Pelton wheel of a hydroelectric power plant has the following specifications: The average radius of the wheel is 1.70 m; the exit diameter of

The Pelton wheel of a hydroelectric power plant has the following specifications: The average radius of the wheel is 1.70 m; the exit diameter of the nozzle is 9.97 cm; the jet velocity is 90 m/s; and the turning angle of the buckets is 165ยบ. Determine the volume flow rate through the turbine and the rotational speed of the wheel (in rpm) for maximum power. Also, determine the efficiency of the turbine if the shaft power output is 2100 kW.

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