#1
Which of the following is a renewable energy source?
Coal
Natural Gas
Solar
Nuclear
#2
What is the primary unit used to measure energy consumption?
Watts
Volts
Kilowatt-hours
Amps
#3
What is the purpose of an Energy Star label on appliances?
To indicate high energy consumption
To indicate low energy consumption
To indicate availability of spare parts
To indicate the country of origin
#4
What is the primary energy source for generating electricity in most power plants?
Coal
Natural Gas
Wind
Nuclear
#5
Which of the following factors affects the energy efficiency of a building?
Roof color
Type of windows
Building orientation
All of the above
#6
What is the term used to describe the ratio of useful energy output to the total energy input of a system?
Energy factor
Energy conversion rate
Energy efficiency
Energy productivity
#7
Which factor affects the energy efficiency of a device the most?
Material used in construction
Size of the device
Design and technology
Color of the device
#8
What does 'standby power' refer to in terms of energy consumption?
Power consumed by devices when turned off but still plugged in
Power consumed by devices when in use
Power generated from renewable sources
Power stored in batteries
#9
Which of the following is an example of energy efficiency improvement in transportation?
Increasing vehicle weight
Reducing aerodynamic drag
Using larger engine sizes
Increasing tire pressure
#10
Which sector consumes the largest share of energy in most developed countries?
Residential
Industrial
Commercial
Transportation
#11
Which type of energy is produced by the splitting of an atom?
Nuclear energy
Solar energy
Wind energy
Geothermal energy
#12
What does the term 'passive solar design' refer to?
Using solar panels to generate electricity
Directly converting sunlight into heat without mechanical systems
Using wind turbines to harness wind energy
Using solar concentrators to heat water
#13
What is the concept behind 'cogeneration'?
Using a single energy source to produce electricity and heat simultaneously
Using multiple energy sources to power a single device
Producing energy through nuclear fusion reactions
Storing excess energy for later use
#14
What is the typical energy conversion efficiency of incandescent light bulbs?
#15
Which renewable energy source has the highest energy density?
Wind
Hydroelectric
Biomass
Geothermal
#16
What is the efficiency of a Carnot heat engine operating between two reservoirs at temperatures T1 and T2?
T1 / (T1 - T2)
(T1 - T2) / T1
(T1 - T2) / T2
1 - (T2 / T1)
#17
What is the efficiency of a perfect heat engine according to the second law of thermodynamics?
100%
50%
0%
It cannot be determined
#18
Which of the following is an example of a renewable energy storage technology?
Batteries
Flywheels
Hydrogen fuel cells
Pumped hydro storage