In a pumped hydro system 325 MWh of electric energy was drawn from the grid to störe water with an energy of 270 MWh, While discharging, it delivers the grid an energy of 230 MWh. The turnaround efficiency is: 83.1% 70.8% 90.1% 85.2%

In a pumped hydro system 325 MWh of electric energy was drawn from the grid to störe water with an energy of 270 MWh, While discharging, it delivers the grid an energy of 230 MWh. The turnaround efficiency is: 83.1% 70.8% 90.1% 85.2%

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter7: Alternating Current, Power Distribution, And Voltage Systems

Section: Chapter Questions

Problem 8RQ

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Concept explainers

Electrical Power Generation

In an electric power generator, one type of energy is converted into electrical energy. Power-generating systems are simply a combination of potential or stored energy that is converted to provide kinetic energy, which, in turn, generates electrical energy for use in engines, lighting, heating, and other benefits of modern life.

Question

In a pumped hydro system 325 MWh of electric energy was drawn from the grid to
störe water with an energy of 270 MWh, While discharging, it delivers the grid an
energy of 230 MWh. The turnaround efficiency is:
83.1%
70.8%
90.1%
85.2%

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