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Which risk dramatically escalates when nearing Carnot efficiency?

A)Increased mechanical vibration instabilities
B)Heat exchanger surface oxidation
C)Internal fluid turbulent transition
D)System sensitivity to small gradients

💡 Explanation

Tiny temperature differences become crucial to heat transfer, because near Carnot limits any deviation from theoretical equilibrium drastically reduces the ideal cycle's effectiveness. Therefore, system calibration is increasingly sensitive rather than causing vibrations, turbulence, or oxidation which are dictated by operating properties.

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