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← ScienceWhich risk increases during a Carnot engine cycle?
A)Heat transfer to cold reservoir✓
B)System irreversibility approaches zero
C)Engine approaches maximum efficiency
D)Entropy transferred equals energy transferred
💡 Explanation
Heat transfer to a cold reservoir must occur during the Carnot cycle to complete it; the mechanism describes heat expulsion to lower temperature. Therefore, heat transfer is required, rather than a theoretical 'zero' transfer, because isothermal compression demands waste heat rejection.
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