Practice Dual Cycle (4.3) - Power and Refrigeration Cycles - Applied Thermodynamics

Practice: Dual Cycle

Lesson 4.3Power and Refrigeration Cycles

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9 questions

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6 sample questions

Question 1.
Define the Dual Cycle.
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Think about what two cycles are being implemented.
Question 2.
What is thermal efficiency?
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Consider how efficiency is measured in thermodynamic cycles.
3Question 3.
What defines the Dual Cycle?
- A cycle that uses only constant volume heat addition
- A combination of Otto and Diesel cycles with mixed heat addition
- Only applicable for Diesel engines
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Recall the characteristics of both cycles.
4Question 4.
True or False: The Dual Cycle has lower thermal efficiency than the Otto Cycle.
- True
- False
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Consider how heat is added in the Dual Cycle.
Question 5.
A Dual Cycle engine operates with a compression ratio of 8 and a specific heat ratio (γ) of 1.4. Calculate its thermal efficiency. What happens to efficiency if the compression ratio is increased to 12?
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The formula relates compression ratio to thermal efficiency.
Question 6.
Explain how adapting Dual Cycle engines might reduce emissions in urban settings compared to traditional engine cycles.
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Think about the environmental benefits of more efficient engines.

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