Vertical-Axis Wind Turbines (VAWTs) Quiz
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Questions and Answers

What is the main advantage of a vertical-axis wind turbine (VAWT) in terms of positioning?

  • The VAWT can achieve higher rotational speeds compared to horizontal-axis wind turbines (HAWT)
  • The turbine can harness wind from any direction without the need for orientation mechanisms
  • The blades experience reduced bending moments due to the transverse rotor shaft
  • The generator and gearbox can be located close to the ground for easier service and repair (correct)

    • What was a major drawback of early vertical-axis wind turbine (VAWT) designs?

  • Significant torque ripple during each revolution (correct)
  • Limited rotational speed compared to horizontal-axis wind turbines (HAWT)
  • Inability to harness wind in disturbed flow-fields
  • Excessive noise generation during operation

    • What design improvement addressed the torque ripple issue in VAWTs?

  • Increasing the length of the rotor shaft
  • Adding more blades to the turbine
  • Using lighter materials for the blades
  • Sweeping the blades helically (Gorlov type) (correct)

    • Why are Savonius VAWTs considered a good alternative for distributed generation devices in an urban environment?

    <p>They perform better in disturbed flow-fields compared to small horizontal-axis wind turbines (HAWT)</p> Signup and view all the answers

    What feature distinguishes a vertical-axis wind turbine (VAWT) from a horizontal-axis wind turbine (HAWT) in terms of wind direction?

    <p>VAWTs do not need to be pointed into the wind</p> Signup and view all the answers

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