Which phenomenon limits the maximum theoretical efficiency of a steam turbine used in electrical power generation?

💡 Explanation

When sourcing power, heat energy transfers, causing the steam turbine to operate on a thermodynamic cycle, and is therefore ultimately limited by the Carnot efficiency, which depends solely on the temperature difference between the hot and cold reservoirs. Therefore Carnot efficiency is the main constraint, rather than erosion, friction, or cavitation which are practical, but secondary, concerns.

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