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← ScienceWhich constraint limits the efficiency of deep space probe's radioisotope thermoelectric generator (RTG) approximated as a Carnot engine?
A)Waste heat dissipation temperature limits✓
B)Fuel isotope decay chain parameters
C)Thermoelectric material conduction bandwidth
D)RTG mechanical vibration tolerances
💡 Explanation
The Carnot efficiency depends on the temperature difference because the Carnot cycle dictates maximum efficiency depends on hot and cold reservoir temperatures. Therefore, the cold sink temperature from waste heat determines maximum RTG efficiency, rather than other material properties.
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