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Which outcome results when exceeding the critical Reynolds number within lubricating oil inside a journal bearing?

A)Increased frictional heating of the bearing
B)Reduced load-carrying capacity of bearing
C)Enhanced oil film thickness uniformity
D)Decreased vibration within bearing assembly

💡 Explanation

Exceeding the critical Reynolds number promotes turbulence, thus increasing viscous dissipation and frictional heating of the bearing because the flow transitions from laminar to disordered. Therefore, heat increases rather than being effectively removed, because other options do reduce friction under ideal flowing conditions.

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