If the average velocity in the pipe $(D=0\mathrm{.}08cm)$ is $2\frac{m}{s},$ and $2hp$ is input into the water, then the energy grade line would increase suddenly at the pump a distance nearest $($efficiency is $80\%)$

A flow rate of $2\frac{m^3}{s}$ exists in the pipe with length of $400m$ and diameter of $90cm.$ What is the expected power output of the turbine $(85\%$ efficient$)$ if the elevation difference of the reservoir surfaces is $76m.$

Answer: $$