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

It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature by using refrigeration cycle.
It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature.
None of these
It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source.

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Engineering Thermodynamics
Which is the incorrect statement about Carnot cycle?

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

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