2) The pump of a water distribution system is powered by an electric motor whose efficiency is 80% with a shaft that is 97% efficient and a pump that is 60% efficient. The water flow rate through the pump is 0.2 m³/s. What is the total efficiency of the pump/motor assembly? The diameters of the inlet and outlet pipes are the same, and the elevation difference across the pump is negligible. If the pressures at the inlet and outlet of the pump are measured to be 70 kPa and 720 kPa (absolute), respectively, determine the electrical consumption of the pump.

2) The pump of a water distribution system is powered by an electric motor whose efficiency is 80% with a shaft that is 97% efficient and a pump that is 60% efficient. The water flow rate through the pump is 0.2 m³/s. What is the total efficiency of the pump/motor assembly? The diameters of the inlet and outlet pipes are the same, and the elevation difference across the pump is negligible. If the pressures at the inlet and outlet of the pump are measured to be 70 kPa and 720 kPa (absolute), respectively, determine the electrical consumption of the pump.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

2) The pump of a water distribution system is powered by an electric motor whose efficiency is
80% with a shaft that is 97% efficient and a pump that is 60% efficient. The water flow rate
through the pump is 0.2 m³/s. What is the total efficiency of the pump/motor assembly? The
diameters of the inlet and outlet pipes are the same, and the elevation difference across the
pump is negligible. If the pressures at the inlet and outlet of the pump are measured to be 70
kPa and 720 kPa (absolute), respectively, determine the electrical consumption of the pump.

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