A variable-speed HAWT has a power coefficient of 0.45 at its rated wind speed v r and
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A variable-speed HAWT has a power coefficient of 0.45 at its rated wind speed vr and maintains its rated power for wind speeds between this value and its cutout speed of 25 m/s. If the rotor diameter is 100 m, and the rated power is 3 MW, what is vr?
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