Changes
/* Anemometers */
[[Image:windvane.png|center|300px|thumb|Fig 14 [http://www1.eere.energy.gov/windandhydro/wind_how.html Anemometer & Wind vane]]]
Source:[http://blog.mapawatt.com/2009/07/06/make-sure-you-have-wind-speed/ sourceAnemometer]
'''Types of anemometers'''
Wind vanes are used to measure the wind directions and communicates with the yaw system to orient the turbine properly with respective to wind directions, to extract maximum amount of power from wind. Wind turbines are oriented to upstream wind or down stream wind.
Source:[http://www.top-alternative-energy-sources.com/inside-a-wind-turbine.html sourceA Wind Turbine]
===Yaw Mechanism===
