Jawaban:

Karnot heat engine is famous in the world because it is considered as the most efficient heat engine possible. This is because it operates on the principle of the Carnot cycle, which is a theoretical thermodynamic cycle that describes the most efficient heat engine that is possible.

The Carnot cycle is composed of four reversible processes that occur in a specific order: isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression. The engine's efficiency is determined by the temperature difference between the hot and cold reservoirs, and it is independent of the working fluid used. This means that the Carnot cycle can be used as a theoretical benchmark to compare the efficiency of other heat engines.

There is a need to train this engine to have a better efficiency than other engines because in real-world applications, heat engines are not 100% efficient. By understanding the principles of the Carnot cycle, engineers can design and improve the efficiency of real-world heat engines by minimizing the amount of heat wasted during the expansion and compression processes.

Furthermore, in modern era, with the increasing need for energy efficiency and reduced carbon emissions, the development of more efficient heat engines has become a critical area of research. Understanding the Carnot cycle can be help to improve the efficiency of real-world heat engines, which could help to reduce energy consumption and decrease carbon emissions