Discuss the following in detail:
Q: The pump-turbine system in Fig draws water from the upper reservoir in the daytime to produce power for a city. At night, it pumps water from lower to upper reservoirs to restore the situation. For a design flow rate of 15,000 gal/ min in either direction, the friction head loss is 17 ft. Estimate the power in kW
(a) extracted by the turbine and
(b) delivered by the pump.
