Choose Kelvin-Plank statement among the following
It is impossible for a heat engine to produce net work in a complete cycle if it exchanges heat only with bodies at a single fixed temperature
The Kelvin–Planck statement prohibits a cyclic heat engine whose sole effect is to absorb heat from one fixed-temperature reservoir and convert it entirely into net work. Hence the first option is correct. The second is the Clausius statement. For an isolated system, entropy increases in irreversible processes and remains constant in reversible processes, so “always increasing” is too strong.
Important Questions from Statements of Second Law of Thermodynamics
Which law of thermodynamics assigns a quality to different form of energy, and also indicates the direction of any spontaneous process?
The heat flows from a cold body to a hot body with aid of an external source. The statement is given by
- The direction of the natural process is defined by ______.
Identify the correct option with respect to the second law of thermodynamics.
I) It gives the concept of temperature
II) It gives the concept of internal energy
III) it gives the concept of entropy
Which of following is true with respect to PMM2?
