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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is excess air?
π‘ Hint: Think about why combustion would need more air than the ideal amount.
Question 2
Easy
How is excess air calculated?
π‘ Hint: Consider what you divide and subtract in the formula.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does excess air in combustion refer to?
- The ideal amount of air needed
- Air in excess of the stoichiometric amount
- Any air present during combustion
π‘ Hint: Think about the difference between 'enough' and 'extra' air.
Question 2
True or False: Excess air can increase combustion efficiency.
- True
- False
π‘ Hint: Consider what happens when there's too much air affecting fuel burn.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A combustion system used 300 kg of air for 150 kg of fuel while the stoichiometric requirement is 200 kg. Calculate the excess air and discuss the implications.
π‘ Hint: Follow the formula and reflect on what excess air would mean for combustion efficiency.
Question 2
In a factory, engineers decide to operate their furnace with an air-to-fuel ratio resulting in 80% excess air. Assess the pros and cons and suggest the ideal range for air input.
π‘ Hint: Consider both the efficiency and environmental impact in your assessment.
Challenge and get performance evaluation