a. Even if we ignore the frictional losses, explain why wind turbines aren't 100% efficient.
b. Discuss the graph shown in Figure 01.
c. Through the help of a very simple schematic, explain the difference between a horizontal axis wind turbine and a vertical axis wind turbine for harnessing wind energy.
Power (kilowatts)
Cut-out speed
Rated output power
Power curve
Cut-in speed
3.5
14
25
Typical wind turbine power output with steady wind speed.
Figure 01 Page 1 of 2