With increase in compression ratio, the efficiency of the otto engine________________?
Correct answer: A. Increases
- A. Increases
- B. Decreases
- C. Remain constant
- D. Increases linearly
Explanation
For an ideal Otto cycle, efficiency is η = 1 − 1/r^(γ−1), where r is the compression ratio and γ is greater than one. Increasing r therefore increases efficiency, though not linearly.
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