If the tip speed ratio is 1.5, and the wind speed is 12 km/hr, the speed of the tip of the windmill is ___________ km/hr
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Tip speed ratio
This is the ratio of the tangential speed of the tip to the actual speed of the wind.
In this case this ratio is :
1.5 = 3 : 2
The speed of the wind = 12
Speed of the tip = 3/2 × 12 = 18
= 18 km/h
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