Title: M5L2 Quiz
Course: WIND 100WH Introduction to Wind Energy > Section: WIND 100WH Introduction to Wind Energy

Q: Linemen make up a large part of the wind farm installation workforce. They are required to survey, design, and build all structures pertaining to the linking of towers by lines and the overall collection at specially designed substation/s.
- True
- False
A: True

Q: Wind farm substations are designed to collect electrical power, monitor power penetration to the grid, and dis/connect from the farms power lines.
- True
- False
A: True

Q: Grid-tied systems are not associated with power penetration.
- True
- False
A: False

Q: NEC stands for the ____________.
- National Electrical Council
- National Electrical Code
- National Energy Code
- New Electrical Construction
A: National Electrical Code

Q: Grid-tied systems must out of phase with the grid.
- True
- False
A: False

Q: A disconnect is used for power isolation.
- True
- False
A: True

Q: Net metering ___________ ordinary utility meters.
- differs from
- is similar to
A: differs from

Q: Net metering is covered in ________, Section 210.
- NEC
- PURPA
- OSHA
- IEC
A: PURPA

Q: A U.S. grid-tied inverter is designed to sync its output with the grid’s 60Hz ac.
- True
- False
A: True

Q: Smaller wind turbines use ______ generators. Their output is made into ac (and synced with the grid’s frequency) by a/n ______.
- DC, inverter
- ac, rectifier
- ac, inverter
- PM, rectifier
A: DC, inverter

Q: Some _______ wind turbines have double-fed induction generators. They use an inverter-generator feedback system to align the exciter current of the generator to 60Hz. This allows the synchronous speed to deviate by up to about 10%.
- small
- large
- None of the above: this type of system does not exist.
A: large

Q: Low-voltage ride through or LVRT is a means of controlling the actions and connection of a wind turbine when voltage levels ___________________.
- unexpectedly increase
- unexpectedly decrease
- spike
- surge
A: unexpectedly decrease

Q: When a section of the grid is isolated from the rest it is called _______________.
- separation
- islanding
- exemption
- clearing
A: islanding

Q: DC is allowed to bleed through inverters into the grid.
- True
- False
A: False

Q: Capacitive and inductive loads cause the current and voltages to become out of phase. Since power is the product of current and voltage, if the power is not happening at the same time, there is an overall __________ to the circuit.
- voltage surge
- power loss
- voltage decrease
- power gain
A: power loss