Practice - Stoichiometric air-fuel ratio (AFR)
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Practice Questions
Test your understanding with targeted questions
Define stoichiometric air-fuel ratio (AFR).
💡 Hint: It indicates the balance necessary for burning fuel.
What does excess air refer to?
💡 Hint: Consider what happens when more air is added than necessary.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the stoichiometric air-fuel ratio?
💡 Hint: Focus on what it means for fuel usage.
True or False: Excess air is beneficial at all times.
💡 Hint: Consider how air supply impacts combustion.
1 more question available
Challenge Problems
Push your limits with advanced challenges
If a combustion engine operates at a stoichiometric AFR of 14.7:1 and the actual supplied air is 35.4 kg for 2.4 kg of fuel, what is the equivalence ratio?
💡 Hint: Determine stoichiometric air first, then find the equivalence ratio.
A furnace uses 12 kg of air to burn 1 kg of coal. If the actual supply of air is 14 kg, calculate the excess air and discuss its effects on combustion.
💡 Hint: Use the excess air formula and consider the combustion implications.
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