Question
The average wind speed at a height of 80m over the North Sea is estimated to be about 9 m/s. Norway plans to build a 10-MW wind turbine in the North Sea, which will have blades of diameter 145m producing an average of 3 MW of power. Calculate the efficiency of the turbine.
My teacher said the answer is 42%, but I don't know how to get that answer.
My teacher said the answer is 42%, but I don't know how to get that answer.