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Which instability arises when lubricating oil's viscosity drops excessively inside a high-speed bearing?

A)Adhesive wear rate will accelerate
B)Reduced cavitation damage probability
C)Higher hydrodynamic film temperature.
D)Increased Bingham plastic transition

💡 Explanation

Adhesive wear accelerates because direct metal-metal contact increases as oil viscosity decreases; this is due to lubricant starvation. Therefore, adhesive wear rises rapidly, rather than cavitation being reduced or temperatures decreasing, due to insufficient viscous lubrication.

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