Question: The engine is working on ideal Otto cycle. The temperature at the beginning and at the end of compression is (60^{circ} mathrm{C}) and (400^{circ} mathrm{C}).

The engine is working on ideal Otto cycle. The temperature at the beginning and at the end of compression is $60^{\circ} \mathrm{C}$ and $400^{\circ} \mathrm{C}$. Calculate the air standard efficiency.

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