Practice Efficiency (1.6.C) - Fuel Cells - Renewable Energy Engineering

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9 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the primary function of a fuel cell?
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Think about how batteries work versus how fuel cells operate.
Question 2.
Name one type of fuel cell.
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Look at the examples given in the section.
3Question 3.
What is the primary product of a hydrogen fuel cell?
- Electricity
- Carbon Dioxide
- Water
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Think about what happens when hydrogen combines with oxygen.
4Question 4.
True or False: Fuel cells store energy like batteries.
- True
- False
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Consider how fuel cells generate power.
Question 5.
Calculate the practical efficiency of a given hydrogen fuel cell, knowing that its Gibbs free energy change is 237 kJ/mol and its enthalpy change is 286 kJ/mol.
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Use the formula presented in the detailed summary.
Question 6.
Analyze the advantages of using a Solid Oxide Fuel Cell (SOFC) compared to a conventional combustion engine in terms of efficiency and emissions.
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Consider the principles of thermodynamics and the outputs of both systems.

5 more questions in this section. Enroll free to practise them all.