Q. Why is a blade twisted along its length rather than its width?

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Q. Which of the following blade designs further increases the efficiency of airfoil blades?

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Q. Why does wind speed increase with height above ground?

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Q. Increased wind tower height and longer blades do not result in an increase in power.

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Q. Why should longer turbine blades be made of stronger materials?

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Q. Which of the following is best reason for not using longer blades even though they produce greater output power?

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Q. Which theory is used to model the wind turbine?

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Q. What is blade element momentum theory?

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Q. Wind turbines convert wind energy to ________

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Q. Which of the following components of a wind turbine system is arranged in the order in which energy is being converted?

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Q. Which of the following are commonly used commercial wind turbines?

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Q. What are horizontal wind turbines?

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Q. Which of the following is an advantage of a horizontal axis wind turbine?

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Q. What is an upwind turbine?

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Q. What is the main advantage of an upwind turbine?

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Q. What is the main disadvantage of an upwind turbine?

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Q. What is a downwind turbine?

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Q. What is the main advantage of any downwind turbine?

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Q. What is the main disadvantage of a downward wind turbine?

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Q. What is a vertical wind turbine?

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