Question
Download Solution PDFWith reference to wind turbines, which of the following statements are correct?
I. In a propeller-type turbine, the number of blades is three to six.
Il. The Darrieus type of turbine is an example of vertical axis turbines.
III. Propeller type turbines are rarely used.
IV. A multi-blade type turbine is an example of horizontal axis turbines.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
The correct explanation for option 3 is as follows:
I. In a propeller-type turbine, the number of blades is three to six.
This statement is correct. Propeller-type turbines typically have three to six blades.
II. The Darrieus type of turbine is an example of vertical axis turbines.
This statement is correct. The Darrieus turbine is a vertical axis wind turbine.
III. Propeller-type turbines are rarely used.
This statement is incorrect. Propeller-type turbines are commonly used in horizontal axis wind turbines and are not considered rare.
IV. A multi-blade type turbine is an example of horizontal axis turbines.
This statement is correct. Multi-blade turbines are often associated with horizontal axis wind turbines.
Therefore, the correct option is 3) I, II, and IV.
Last updated on Jun 16, 2025
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