Engineering Thermodynamics
Carnot cycle efficiency depends upon

Working condition
Properties of the medium/substance used
Condition of engine
Temperature range of operation

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Engineering Thermodynamics
Zeroth law of thermodynamics

Deals with conversion of mass and energy
Deals with reversibility and irreversibility of process
States that if two systems are both in equilibrium with a third system, they are in thermal equilibrium with each other
Deals with heat engines

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