Question

A wind turbine that is 80 feet in diameter has a steady wind of 30 mph (miles per hour) blowing into it. The efficiency of the turbine in converting wind energy to electricity is 40%. If the mass density of air is 0.075 lbm/ft³ answer the following questions. You did watch the video lectures ...right?

What is the actual power output of the turbine in horsepower to three significant digits ______________? Do not type in units, do not forget efficiency.

What is the velocity of the air leaving the turbine based on the efficiency of 40% in ft/s to three significant digits  ?__________________

What is the force required to hold the turbine in place in lbf to three significant digits ________________? Do not enter units or plus or minus signs, just a magnitude.

Answer 1

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