EGEE 101 Final Exam Questions and Answers Already Passed
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Course
EGEE 101
Institution
EGEE 101
EGEE 101 Final Exam Questions and
Answers Already Passed
What is the primary goal of energy efficiency in modern energy systems?
To reduce energy consumption while maintaining performance
How does solar power generate electricity?
By converting sunlight into electrical energy using photo...
EGEE 101 Final Exam Questions and
Answers Already Passed
What is the primary goal of energy efficiency in modern energy systems?
✔✔To reduce energy consumption while maintaining performance
How does solar power generate electricity?
✔✔By converting sunlight into electrical energy using photovoltaic cells
What is the main environmental benefit of using wind energy?
✔✔It produces no emissions or pollutants
Which of the following is a major disadvantage of using coal for energy?
✔✔It releases harmful pollutants and carbon dioxide into the atmosphere
What is the purpose of a heat exchanger in energy systems?
✔✔To transfer heat between two fluids without mixing them
1
,How do geothermal power plants produce electricity?
✔✔By harnessing heat from beneath the Earth's surface to generate steam that drives turbines
What is the role of batteries in solar energy systems?
✔✔To store excess energy generated during sunny periods for later use
How is biomass used to generate energy?
✔✔By converting organic materials into biofuels or using them to produce heat and electricity
What is the main principle behind the operation of hydropower plants?
✔✔The conversion of the potential energy of stored water into mechanical energy
What is the advantage of using hydrogen fuel cells for energy?
✔✔They produce only water as a byproduct, making them environmentally friendly
How do nuclear power plants generate electricity?
✔✔By using nuclear reactions to produce heat, which is then used to generate steam and drive
turbines
2
, What are the main sources of energy used in the United States?
✔✔Fossil fuels such as oil, coal, and natural gas
What is the main challenge of using wind energy for large-scale electricity generation?
✔✔The variability of wind speeds, which can make energy production inconsistent
How do photovoltaic cells work?
✔✔They convert sunlight directly into electricity using semiconductor materials
What is the primary function of energy conservation?
✔✔To reduce the total amount of energy consumed, thereby saving resources and reducing
environmental impact
How does a hydroelectric dam generate electricity?
✔✔By using the gravitational potential energy of water to drive turbines that generate electricity
What is the concept of energy independence?
3
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