Water is pumped from a lake to a storage tank 15 m above at a rate of 70 L/s while consuming 15.4 kW of electric power. Disregarding any frictional losses in the pipes and any changes in kinetic energy, determine (a) the overall efficiency of the pump–motor unit and (b) the pressure difference between the inlet and the exit of the pump.

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Q: A Carnot engine operates between the temperatures Th = 1.00 x 102°C and Tc = 20.0°C. By what factor…

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Q: ) In one application of the Carnot engine, a high temperature was obtained at 327 C. The heat energy…

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Q: ume of 0.2 m3 ;

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Q: 2) The pump of a water distribution system is powered by an electric motor whose efficiency is 80%…

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Q: he thermal efficiency of a Carnot cycle operating between 170 ˚C and 62

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