Engineering Thermodynamics
Which is the incorrect statement about Carnot cycle?

All the heat engines are based on Carnot cycle
All of these
It provides concept of maximising work output between the two temperature limits
It is used as the alternate standard of comparison of all heat engines

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Engineering Thermodynamics
According to First law of thermodynamics,

Total internal energy of a system during a process remains constant
Work-done by a system is equal to the heat transferred by the system
Total energy of a system remains constant
Internal energy, enthalpy and entropy during a process remain constant

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