The minimum speed of wind necessary for the satisfactory working of a wind generator to produce electricity is about:
A
15 km/h
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B
20 m/h
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C
12 m/s
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D
50 km/h
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Solution
The correct option is B 15 km/h Speed of the wind is an important element in rotating the turbines in the wind mills for the generation of electricity. Wind mills cannot be set up everywhere, it can be only set up in highly windy areas or with the minimum wind speed of 15 km/hr.