Engineering Thermodynamics
The efficiency of Diesel cycle with decrease in cut-off

First increases and then decreases
Decreases
First decreases and then increases
Increases

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Engineering Thermodynamics
Gases have

Under some conditions one value and sometimes two values of specific heat
Only one value of specific heat
Two values of specific heat
No value of specific heat

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

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

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