What is the purpose of monitoring yaw position?

• A. To optimize blade pitch.
• B. To reduce noise.
• C. To prevent over-twisting on tower cables.
• D. To increase rotor speed.

Answer: (C)

Yaw position is tracked to keep the nacelle oriented correctly with respect to the wind direction, and to ensure the yaw system operates within safe limits. The cables and electrical harness pass through the yaw bearing, so repeated or excessive yaw motion can twist or fatigue these cables. By monitoring yaw position, the system can stop or limit yawing before the cables become over-twisted, protecting electrical connections and the structure. Blade pitch and rotor speed are controlled by other systems—pitch control adjusts blades based on wind and speed, and yaw itself doesn’t directly set rotor speed. While yaw misalignment can slightly affect noise due to loads, preventing cable twisting is the primary reason for monitoring yaw position.