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← ScienceWhich risk increases when an imperfect heat engine using a Carnot cycle experiences unexpectedly reduced cooling?
A)Compression cycle pressure remains constant
B)Isothermal expansion phase transition slowdown
C)Engine thermal efficiency sharply decreases✓
D)Heat leakage bypasses working fluid
💡 Explanation
Reduced cooling decreases the temperature differential in a Carnot cycle. The engine thermal efficiency strongly depends on the temperature difference because the theoretical Carnot efficiency is limited; therefore efficiency will decrease significantly, rather than altering the thermodynamic equilibrium.
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