Title: M2L2 Quiz
Course: WIND 100WH Introduction to Wind Energy > Section: WIND 100WH Introduction to Wind Energy

Q: A _____ is a dimensionless number and is commonly used as a correction factor in an equation.

Q: The typical _____ coefficient for wind turbine blades is 0.04

Q: Referring to the image above, P1 is ________ than P2 when the wind passes across the airfoil.
- greater
- lower
A: lower

Q: Referring to the image above, V1 is ________ than V2 when the wind passes across the airfoil.
- greater
- lower
A: greater

Q: Referring to the image above, the entire airfoil should move ________ when the wind passes across the airfoil.
- upward
- downward
A: upward

Q: Since the air must travel over a longer distance on the top of the air foil, _____ occurs. The created low-pressure area allows the blade
to rise.

Q: If the blades are 140 feet in length and the rotor is turns once every 5 seconds, what would be the tip speed of the blades?
- 120mph
- 140mph
- 100mph
- 80mph
A: 120mph

Q: The purpose of _____ is to control how much wind the blades may “catch.”
- discarding
- air flow control
- wind knurling
- pitch control
A: pitch control

Q: There are two main types of wind turbines, the _____ and the _____.
- HAWT/VAWT
- WHAT/WVAT
- HWT/VWH
- HWEH/VHWE
A: HAWT/VAWT

Q: _____ function much like an airplane wing.

Q: Referring to the above image, the area within the circle is called the blade’s _____; it is letter _____ in the above diagram.

Q: Referring to the above image, the center of the rotor, where the blades connect, is called the _____; it is letter _____ in the above diagram.

Q: Referring to the above image, the outermost part of the blade is call the blade ___; it is letter _____ in the above diagram.

Q: The blade is letter _____ in the above diagram.

Q: Referring to the above image, letter _____ refers to the blade tip speed and path.