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For the same values of peak pressure, peak temperature and heat rejection, the correct order of efficiencies for Otto, Dual and Diesel cycles is

For the same values of peak pressure, peak temperature and heat rejection, the correct order of efficiencies for Otto, Dual and Diesel cycles is Correct Answer η<sub>Disel</sub> &gt; η<sub>Dual</sub> &gt; η<sub>Otto</sub>

Explanation:

For same values of peak pressure and temperature. Diesel cycle is most efficient and Otto cycle is least. Efficiency of dual cycle lies in between.

ηDiesel > ηDual > ηOtto

And for same compression ratio and heat rejection or heat addition,

ηOtto > ηDual > ηDiesel

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