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

All of these
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
There is a definite amount of mechanical energy, which can be obtained from a given quantity of heat energy

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Engineering Thermodynamics
Select the wrong statement

All of these
An Ericsson cycle consists of two constant pressure and two isothermal processes.
An Otto cycle consists of two constant volume and two isentropic processes.
A Joule cycle consists of two constant volume and two isentropic processes.

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