Question

Water flows at a rate of 50. kg.s^-1 and a velocity of 32 m-s into a hydroelectric turbine. If the power
output from the turbine is 20. kW, what is its efficiency? Give your answer as a percentage.​

Answer 1

Answer:

If you don't mind equations the easiest way to explain how much power you could generate is to look at the equation for calculating hydropower:

• P = m x g x Hnet x η
• Hnet = Hgross x 0.9 = 2.5 x 0.9 = 2.25 m.
• 3 m3/s = 3,000 litres per second.
• Power (W) = m x g x Hnet x η = 3,000 x 9.81 x 2.25 x 0.751 = 49,729 W = 49.7 kW.