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The power produced from a wind speed 6.4 to 37 km ph by windmill varies from:

[A].	0.1 to 0.5 hp	[B].	0.1 to 0.9 hp
[C].	0.5 to 1 hp	[D].	1 to 9 hp

Answer: Option B

Surendran.k said:

POWER FROM WINDMILL IS 0.5 X density x area of sweep by rotor blade x (velocity of wind)^3 = .5x1.29x.785x4x(1.77)^3 = 11 watts that is 0.01 Hp for the lower limits