Задача 20а

Task 20a Determine the engine power of a pump with a volumetric supply of V dm3 / s of a liquid with a relative density of 1.25. The total pump head is 60 m. The pump efficiency is 0.7, the transmission efficiency is 0.95, the electric motor efficiency is 0.93. a) 20 dm3/s; b) 40 dm3 / s; c) 60 dm3/s

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