#1
Which of the following is a renewable energy source?
18 answered
#2
What is the primary unit used to measure energy consumption?
19 answered
#3
What is the purpose of an Energy Star label on appliances?
18 answered
#4
What is the primary energy source for generating electricity in most power plants?
16 answered
#5
Which of the following factors affects the energy efficiency of a building?
14 answered
#6
What is the term used to describe the ratio of useful energy output to the total energy input of a system?
14 answered
#7
Which factor affects the energy efficiency of a device the most?
15 answered
#8
What does 'standby power' refer to in terms of energy consumption?
13 answered
#9
Which of the following is an example of energy efficiency improvement in transportation?
11 answered
#10
Which sector consumes the largest share of energy in most developed countries?
11 answered
#11
Which type of energy is produced by the splitting of an atom?
10 answered
#12
What does the term 'passive solar design' refer to?
10 answered
#13
What is the concept behind 'cogeneration'?
13 answered
#14
What is the typical energy conversion efficiency of incandescent light bulbs?
13 answered
#15
Which renewable energy source has the highest energy density?
9 answered
#16
What is the efficiency of a Carnot heat engine operating between two reservoirs at temperatures T1 and T2?
9 answered
#17
What is the efficiency of a perfect heat engine according to the second law of thermodynamics?
7 answered
#18
Which of the following is an example of a renewable energy storage technology?
10 answered