Question

How is the action of yaw controlled in small turbines?

(a) Tail vane

(b) Blades

(c) Shaft

(d) Yaw motor

The question was asked by my college director while I was bunking the class.

This intriguing question originated from Components of Wind Energy Conversion System in portion Wind Energy of Energy Engineering

Answer 1

The correct choice is (a) Tail vane

For explanation I would say: In small turbines, yaw action is controlled by a tail vane while is larger machines a servomechanism operated by a wind-direction sensor controls the yaw motor keeping the turbine properly oriented.