engineering recuitment NCL Assistant Foreman (Trainee) Mock Test 2024 Thermodynamics Second Law of Thermodynamics and Entropy Entropy and Irreversibility
An electric motor of 15 kW is subjected to a braking test for 1/2 hour. The heat generated by the frictional forces in the process is transferred to the surrounding at 27°C. The resulting entropy change will be
1
90 kJ / K
2
180 kJ / K
3
55.5 kJ / K
4
1000 kJ / K