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Equivalence ratio is
- a)actual fuel-air ratio/stoichiometric fuel-air ratio
- b)stoichiometric fuel-air ratio/actual fuel-air ratio
- c)stoichiometric fuel-air ratio/actual fuel-fuel-ratio
- d)None of these
Correct answer is option 'B'. Can you explain this answer?
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Equivalence ratio isa)actual fuel-air ratio/stoichiometric fuel-air ra...
Understanding Equivalence Ratio
The equivalence ratio is a critical concept in combustion and engine performance analysis. It provides insight into the fuel and air mixture quality in a combustion process.
Definition of Equivalence Ratio
- The equivalence ratio (Φ) is defined as:
- Φ = Actual Fuel-Air Ratio / Stoichiometric Fuel-Air Ratio
Correct Answer Explanation
- The correct answer is option 'B' because it accurately describes how the equivalence ratio is calculated.
- In this context:
- Actual Fuel-Air Ratio refers to the real mixture of fuel and air being used in the combustion process.
- Stoichiometric Fuel-Air Ratio represents the ideal mixture where all fuel is completely burned with no leftover reactants.
Importance of Equivalence Ratio
- The equivalence ratio indicates the efficiency of fuel combustion:
- A ratio of Φ = 1 signifies a stoichiometric mixture, ensuring complete combustion.
- A ratio less than 1 indicates a lean mixture (excess air), while a ratio greater than 1 indicates a rich mixture (excess fuel).
Practical Implications
- Understanding the equivalence ratio helps engineers optimize engine performance, emissions, and fuel consumption.
- It also plays a vital role in applications such as:
- Internal combustion engines
- Gas turbines
- Industrial burners
In summary, the equivalence ratio is a vital metric in mechanical engineering that affects combustion efficiency and performance. Option 'B' correctly defines its calculation, highlighting the relationship between actual and stoichiometric fuel-air ratios.
The equivalence ratio is a critical concept in combustion and engine performance analysis. It provides insight into the fuel and air mixture quality in a combustion process.
Definition of Equivalence Ratio
- The equivalence ratio (Φ) is defined as:
- Φ = Actual Fuel-Air Ratio / Stoichiometric Fuel-Air Ratio
Correct Answer Explanation
- The correct answer is option 'B' because it accurately describes how the equivalence ratio is calculated.
- In this context:
- Actual Fuel-Air Ratio refers to the real mixture of fuel and air being used in the combustion process.
- Stoichiometric Fuel-Air Ratio represents the ideal mixture where all fuel is completely burned with no leftover reactants.
Importance of Equivalence Ratio
- The equivalence ratio indicates the efficiency of fuel combustion:
- A ratio of Φ = 1 signifies a stoichiometric mixture, ensuring complete combustion.
- A ratio less than 1 indicates a lean mixture (excess air), while a ratio greater than 1 indicates a rich mixture (excess fuel).
Practical Implications
- Understanding the equivalence ratio helps engineers optimize engine performance, emissions, and fuel consumption.
- It also plays a vital role in applications such as:
- Internal combustion engines
- Gas turbines
- Industrial burners
In summary, the equivalence ratio is a vital metric in mechanical engineering that affects combustion efficiency and performance. Option 'B' correctly defines its calculation, highlighting the relationship between actual and stoichiometric fuel-air ratios.
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Equivalence ratio isa)actual fuel-air ratio/stoichiometric fuel-air ratiob)stoichiometric fuel-air ratio/actual fuel-air ratioc)stoichiometric fuel-air ratio/actual fuel-fuel-ratiod)None of theseCorrect answer is option 'B'. Can you explain this answer?
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