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Types of Wind Turbines

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Questions and Answers

Which of the following statements about the efficiency of Savonius wind turbines is correct?

Savonius turbines can achieve 100% efficiency at converting wind energy to electrical energy.
Savonius turbines have the same efficiency as conventional turbines at converting wind energy to electrical energy.
Savonius turbines are less efficient than conventional turbines at converting wind energy to electrical energy. (correct)
Savonius turbines are more efficient than conventional turbines at converting wind energy to electrical energy.

What is the main advantage of a Savonius wind turbine compared to a horizontal axis wind turbine (HAWT)?

Savonius turbines can operate effectively even when the wind changes direction. (correct)
Savonius turbines require less expensive structures to hold them in place.
Savonius turbines are more efficient at converting wind energy to electrical energy.
Savonius turbines can generate more power at low wind speeds.

Which of the following is a disadvantage of Savonius wind turbines compared to horizontal axis wind turbines (HAWTs)?

Savonius turbines are more difficult to maintain than HAWTs.
Savonius turbines are louder and noisier than HAWTs.
Savonius turbines generate less power than HAWTs. (correct)
Savonius turbines require more expensive structures to hold them in place.

What is the main advantage of a horizontal axis wind turbine (HAWT) compared to a Savonius wind turbine?

HAWTs are more efficient at converting wind energy to electrical energy. (A) Signup and view all the answers

Which of the following is a feature of horizontal axis wind turbines (HAWTs) that is not mentioned for Savonius wind turbines?

Requirement for a tower or other expensive structure to hold the turbine in place. (D) Signup and view all the answers

What is the main reason Savonius wind turbines are described as 'excellent in areas of turbulent wind'?

Savonius turbines have a vertical axis design that allows them to continue operating effectively even when the wind direction changes. (A) Signup and view all the answers

Which of the following is a benefit of horizontal axis wind turbines (HAWTs) compared to Savonius wind turbines that is not mentioned in the text?

HAWTs can generate more power per unit of swept area than Savonius turbines. (C) Signup and view all the answers

What is the main reason the text states that Savonius wind turbines 'are less efficiency than the common HAWT'?

The 'scoop system' used in Savonius turbines to capture wind energy is less efficient than the rotor design of HAWTs. (B) Signup and view all the answers

Which of the following is a key difference between horizontal axis wind turbines (HAWTs) and Savonius wind turbines that is not mentioned in the text?

The typical tip speed ratio (TSR) of HAWTs versus Savonius turbines. (B) Signup and view all the answers

What is the main reason Savonius wind turbines are described as 'self starting'?

Savonius turbines do not require an external starting mechanism, as their 'scoop' design allows them to start rotating on their own. (D) Signup and view all the answers

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