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← ScienceWhich limitation arises because isothermal stages operate infinitely slowly in a heat engine with a Carnot cycle?
A)Power output approaches zero✓
B)Refrigerant supercooling becomes inevitable
C)Thermal efficiency always decreases then
D)Friction within cylinders escalates drastically
💡 Explanation
Because isothermal processes require infinitely slow operation to maintain thermal equilibrium, power output approaches zero because there's no practical temperature difference for heat transfer, rather than alternatives that focus solely on component failure or declining efficiency in other cycles.
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