The cost of producing solar photovoltaic systems for residential applications has fallen by what percentage since the 1990s?
The cost of producing solar photovoltaic systems for residential applications has fallen by what percentage since the 1990s?
50%
10%
Save your time - order a paper!
Get your paper written from scratch within the tight deadline. Our service is a reliable solution to all your troubles. Place an order on any task and we will take care of it. You won’t have to worry about the quality and deadlines
Order Paper Now500%
80%
25%
Flag this Question
Question 6
1 pts
The case that holds the inner workings of a wind turbine is called the:
Nacelle
Tower
Gearbox
Hub
Generator
Question 7
1 pts
Which of the following is NOT a significant factor in the amount of electricity a wind turbine can generate?
Precipitation
Turbine height
Wind speed
Blade length
Geographic location
Question 8
1 pts
Which country has the largest market for wind energy in the world (as of 2012)?
China
Germany
United States
Ireland
Denmark
Flag this Question
Question 9
1 pts
Why is the market for wind energy in the United States so volatile?
Because the production tax credit used in the United States needs to be renewed every few years.
Because wind energy does not work well in the United States.
Because there is no area in the United States with good wind resources.
Because the feed-in tariff in the United States is too low.
Because of the recent financial crisis.
Flag this Question
Question 10
1 pts
Suppose that you were to double the length of a wind turbine’s blade. How much more electricity would that wind turbine generate (keeping the wind speed and other factors the same)?
Four times as much
Twice as much
Six times as much
Eight times as much