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← ScienceWhich risk increases in a Carnot heat engine when an isothermal expansion occurs too rapidly?
A)Increased irreversibility of the process✓
B)Decreased thermal energy reservoir size
C)Reduced compression phase efficiency
D)Elevated maximum operating temperature
💡 Explanation
Increased speed causes reduced efficiency because fast isothermal expansion negates effective heat/work conversion via nonequilibrium thermodynamics, resulting in increased entropy; therefore, the process becomes more irreversible, rather than impacting reservoir sizes or temperature limits.
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