Engineering Thermodynamics
When two bodies are in thermal equilibrium with a third body, they are also in thermal equilibrium with each other. This statement is called

Zeroth law of thermodynamics
Second law of thermodynamics
Kelvin Planck's law
First law of thermodynamics

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Engineering Thermodynamics
Carnot cycle consists of

Two constant pressure and two isentropic processes
Two constant volume and two isentropic processes
Two isothermal and two isentropic processes
One constant volume, one constant pressure and two isentropic processes

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