Engineering Thermodynamics
When a gas is heated at constant pressure

Both temperature and volume will increase
Its temperature will increase
Its volume will increase
Neither temperature not volume will increase

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Engineering Thermodynamics
According to Kelvin-Planck’s statement of second law of thermodynamics,

It is impossible to construct a device which operates in a cyclic process and produces no effect other than the transfer of heat from a cold body to a hot body
None of these
It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work
It is possible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work

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

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

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