Discussion
The most suitable range of wind speeds for wind power generation is
Answer: B
Wind turbines start generating at the cut-in speed of about 4 m/s, reach rated power at about 12 to 15 m/s and are shut down at high speed. So the most suitable range of wind speeds is 4 to 12 m/s. The range of 1 to 5 m/s is too low for useful power, and 10 to 20 and 20 to 50 m/s include speeds at which turbines are stopped to protect them. The answer is 4 - 12 m/s.
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