Engineering Thermodynamics
Which is the incorrect statement about Carnot cycle?

All the heat engines are based on Carnot cycle
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
All of these

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Engineering Thermodynamics
Which of the following is the correct statement of the second law of thermodynamics?

All of these
There is a definite amount of mechanical energy, which can be obtained from a given quantity of heat energy
It is impossible to transfer heat from a body at a lower temperature to a higher temperature, without the aid of an external source
It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work

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