1. A 50 kW wind turbine operates at peak efficiency when the wind blows at 26 miles per hour. At this rate, it reaches
62% of the Betz limit. What is the coefficient of power for this wind turbine?
2. A wind turbine produces 50 volts and 20 amperes at a certain wind speed. The theoretical power in the wind at this speed to be about 3,900 watts. What is the coefficient of power for this turbine?