In a hydro-electric power plant, the difference in elevation between the surface of headwater and tail water surface is 182 m. When the flow is 2.25 m 3 /s, the friction loss in the penstock is 18 m and the head utilized by the turbine is 140 m. The mechanical friction in the turbine is 74.6 kW, and the leakage loss is 0.085 m 3 /s. Calculate: A. Brake power B. Mechanical efficiency C. Overall turbine efficiency

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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In a hydro-electric power plant, the difference in elevation between the surface of headwater and tail water surface is 182 m. When the flow is 2.25 m 3 /s, the friction loss in the penstock is 18 m and the head utilized by the turbine is 140 m. The mechanical friction in the turbine is 74.6 kW, and the leakage loss is 0.085 m 3 /s. Calculate:


A. Brake power
B. Mechanical efficiency
C. Overall turbine efficiency

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