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← ScienceWhich outcome results when lubricant viscosity degrades at high shear?
A)Increased frictional heating and wear✓
B)Reduced hydrodynamic film thickness
C)Elevated lubricant pump power draw
D)Decreased shaft resonant frequency
💡 Explanation
Increased frictional heating and wear occurs because shear thinning lowers viscosity in the boundary lubrication regime; this reduces film thickness and increases friction, rather than occurring due to increased pump power or changed harmonics in the shaft.
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