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← ScienceWhich risk increases when turbines operate sub-optimally near Carnot efficiency?
A)Thermal runaway within core materials
B)Cavitation within the working fluid
C)Increased vibration leading to fatigue✓
D)Decreased electrical resistance generation
💡 Explanation
Operating near Carnot efficiency requires minimizing temperature differences, which leads to erratic and potentially higher cycle frequencies; because blade vibration induces fatigue, therefore fatigue risk increases, rather than other thermal failures at normal operating temperatures.
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