Wind Energy Mid-Unit Quiz

Which of the following is an example of mechanical advantage?

• Placing a large gear near a rotor, then a smaller gear next to the larger one, to increase the speed of rotation.

• Placing equal sized gears near a rotor so that the speed of rotation is increased.

• Placing bigger gears near a rotor so that the speed of rotation is increased.

• None of these.

The first wind mills were created in the region now known as (a)   .

What is the function of a generator?

• To transform AC to DC electricity.

• To transform mechanical energy to AC electricity.

• To rotate along with the blades.

• To transfer power along a grid.

Which of the following is not an example of the historical use of windmills?

• For exploration into remote regions.

• For irrigation and water-pumping.

• For the creation of electricity.

• For testing the strength of solar winds.

What is one downside of wind-turbine as an energy source?

• It is not sustainable

• It creates greenhouse gases.

• It has a high up-front cost.

• None of these.

Does a wind-farm affect the local wildlife in the area?

• Yes, but not as harshly as a solar farm.

• Yes, more harshly than a solar farm.

• No, not at all.

In order to use mechanical advantage, the first gear should be the (a)   in the series.

Which of the following is not a benefit of wind energy?

• It creates new and high-paying jobs.

• It generates no emissions.

• It always produces the same amount of energy.

• It reduces the dependency on fossil fuels.

Is wind just another name for energy?

• Yes, wind is energy.

• No, wind is not energy.

The earliest windmills...

• Were mostly used to pump water from underground.

• Were mounted on tall towers.

• Changed direction with the direction of the wind.

• First found in the Netherlands.