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The air standard efficiency of an I.C. engine is given by (where r = Compression ratio, and γ = Ratio of specific heats)

A. 1 - r^{γ - 1}

B. 1 + r^{γ - 1}

C. 1 - (1/r^{γ - 1})

D. None of these

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Correct Answer :

C. 1 - (1/r^{γ - 1})

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