In a hydroelectric power plant, 100 m3/s of water flows from an elevation of 120 m to

Question:

In a hydroelectric power plant, 100 m3/s of water flows from an elevation of 120 m to a turbine, where electric power is generated. The overall efficiency of the turbine–generator is 80 percent. Disregarding frictional losses in piping, estimate the electric power output of this plant.