Question 58
Figure 10.14 shows a traditional windmill that makes use of wind to grind grain or pump water. Figure 10.15 shows a modern wind turbine that uses wind power to generate electricity. In a traditional windmill, the windmill’s blades are connected to a driveshaft, which turns gears and millstones to grind the grain. In the modern wind turbine, wind spins the blades to turn a rotor that drives a generator to generate electricity.
Look at the shapes of the blades of the traditional windmill and wind turbine. Traditional windmills have blades of about 5 to 10 metres long. Wind turbines have longer blades of about 30 to 40 metres. If the traditional windmill were connected to a generator, do you think it would be more or less efficient at generating electricity compared to the wind turbine?
Look at the shapes of the blades of the traditional windmill and wind turbine. Traditional windmills have blades of about 5 to 10 metres long. Wind turbines have longer blades of about 30 to 40 metres. If the traditional windmill were connected to a generator, do you think it would be more or less efficient at generating electricity compared to the wind turbine?
