Question No $(2)$:

In a hydraulic power plant, the water flows at a rate of $60\frac{m^3}{s}$ from an elevation of $120$ m $.$ to a generator where electric power is to be generated. The level difference between the two large reservoirs is $120$ m as shown in the figure. The total irreversible head loss in the system between the two points A and $B($excluding the loss in the turbine$)$ is calculated to be $30$ m $.$ If the overall efficiency of the turbine$-$generator system is $85\%$ Calculate the electric power output from the generator

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