Engineering
Engineering, 19.03.2021 18:20, heber9609

The water in a large lake is to be used to generate electricity by the installation of a hydraulic turbine-generator. The elevation difference between the free surfaces upstream and downstream of the dam is 165 ft. Water is to be supplied at a rate of 7000 lbm/s. The electrical power generated is measured to be 1546 hp and the generator efficiency of 92%. (1 hp = 550 lbf. ft/s). Determine:
a. the overall efficiency of the turbine-generator.
b. the mechanical efficiency of the turbine.

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