1.The gross head available to a hydroelectric power plant is 100 m. The utilized head in the runner.

1.The gross head available to a hydroelectric power plant is 100 m. The utilized head in the runner of the hydraulic turbine is 72 m. If the hydraulic efficiency of the turbine is 90%, (a) estimate the head lost due to pipe friction in the penstock. (b) If the available discharge to a turbine unit is 10 m3/s, calculate the specific speed of the turbine. Assume the mechanical efficiency as 0.95 and rotational speed of the turbine as 200 rpm.

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