engineering recuitment DVC Junior Engineer Mock Test 2024 Thermodynamics Second Law of Thermodynamics and Entropy Statements of Second Law of Thermodynamics
According to Kelvin-Planck’s statement of the second law of thermodynamics, which of the following statements is correct?
1
Heat from a source should be rejected to a high temperature sink.
2
It restricts the mechanical efficiency of the heat engine to be lesser than unity.
3
Thermal efficiency of the heat engine will be unity.
4
It restricts the thermal efficiency of the heat engine to be lesser than unity.