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← ScienceWhich consequence results when attempting to operate a Carnot engine beyond fundamental limits?
A)Decreased efficiency, increased irreversibility✓
B)Reversible operation, limitless energy
C)Entropy decrease, heat flows upwards
D)Perpetual motion, conserved output
💡 Explanation
Carnot engine efficiency depends on operating temperature differences; exceeding them increases irreversibility because of increased entropy generation from non-ideal heat transfer. Therefore, the efficiency decreases, rather than the engine exhibiting reversible or perpetual motion.
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