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← ScienceWhich phenomenon causes increased energy dissipation in journal bearings due to diminished lubricant cooling?
A)Viscous shear heating intensifies✓
B)Adhesive wear rate increases
C)Interfacial tribochemical reaction dominates
D)Rolling contact fatigue accelerates
💡 Explanation
Viscous shear heating occurs because the fluid's viscosity creates friction as layers slide; therefore, reduced lubricant cooling allows temperatures to rise, and the increased energy converts to heat rather than maintaining lower operating temperatures.
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