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← ScienceWhich risk increases when operating Stirling engine near Carnot limit?
A)Increased thermal short circuiting losses✓
B)Higher lubricant breakdoawn risk
C)Greater mechanical fatigue failures
D)Elevated NOx emission production
💡 Explanation
Operating near the Carnot limit increases sensitivity to irreversible processes, such as thermal conduction; this promotes thermal short circuiting because even small temperature gradients cause significant heat losses, therefore reducing efficiency, rather than the other thermally activated failure modes.
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