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← ScienceWhich output is reduced because a heat sink is imperfect in a Carnot engine?
A)Isothermal energy transfer
B)Adiabatic expansion work
C)System entropy change
D)Thermal efficiency output✓
💡 Explanation
An imperfect heat sink diminishes the maximum possible coefficient via imperfect temperature reservoirs, causing thermal efficiency to drop given Carnot's theorem because irreversible heat losses occur. The theoretical efficiency declines, therefore, rather than affecting individual cycle stages because other transfers are dictated by system parameters.
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