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A rotor installed in a fixed orientation with the swept area perpendicular to the pre dominate wind direction is called ___________

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A rotor installed in a fixed orientation with the swept area perpendicular to the pre dominate wind direction is called ___________

(a) Nacelle

(b) Yaw fixed machines

(c) Blades

(d) Anemometer

I had been asked this question during an online interview.

My doubt stems from Components of Wind Energy Conversion System in section Wind Energy of Energy Engineering

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Correct choice is (b) Yaw fixed machines

The explanation: In the locations with the prevailing wind in one direction, the design of a turbine can be greatly simplified. The rotor can be installed in a fixed orientation with the swept area perpendicular to the pre dominate wind direction. This machine is called yaw fixed.

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