Engineering Thermodynamics
For same compression ratio and for same heat added

Otto cycle is more efficient than Diesel cycle
Both Otto and Diesel cycles are equally efficient
Diesel cycle is more efficient than Otto cycle
Efficiency depends on other factors

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Engineering Thermodynamics
According to Dalton's law, the total pressure of the mixture of gases is equal to

Sum of the partial pressures of all
Greater of the partial pressures of all
Sum of the partial pressures of all divided by average molecular weight
Average of the partial pressures of all

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