Which thermodynamic cycle serves as the theoretical standard of maximum possible efficiency for any heat engine operating between two thermal reservoirs?

💡 Solution & Explanation

The Carnot cycle represents an idealized thermodynamic cycle establishing the theoretical maximum thermal efficiency achievable by any heat engine operating between two temperatures. Practical cycles like the Otto and Rankine engines approximate thermodynamic principles but suffer from inherent irreversibilities limiting their efficiency. Thermodynamic laws and ideal cycles are standard concepts in engineering and physics evaluations.