Which consequence results when a Stirling engine overheats during operation?

💡 Explanation

Reduced thermodynamic efficiency occurs because overheating increases irreversible processes due to greater temperature differences during heat transfer; the Stirling cycle deviates from ideal isothermal conditions, therefore reducing efficiency, rather than the other options which would require different conditions or failures.

• Which outcome increases when fuel cell membrane dries?
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• Which risk increases when eddy currents circulate uncontrollably within a transformer core?
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