Wind Energy

6. the conversion of energy from one for to another.
8. The angle of the blades with respect to the plane of rotation.
9. the friction of the blades against air molecules as they rotate
10. Central component connecting the blades to the driveshaft
11. the rate at which energy changes form from one form to another, or the rate at which work is done.
12. An electronic instrument that can measure voltage, current and resistance
14. “tear drop” shape cross-section used for wind turbine blades.

1. a force times a distance that causes rotation.
2. a force that resists the relative motion of two bodies in contract.
3. the area directly in line with the rotor. This is a dangerous area to stand in case a blade flies out while spinning.
4. the rod or shaft connected to the hub; it rotates the rotor.
5. the electrical pressure or potential difference that drives the electric current.
7. a measure of the rate of flow of electrical charge
13. the rotating section comprised of blades projecting from a hub.
15. a force encountered by the blades that is perpendicular to the oncoming flow of air.