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← ScienceWhich mechanism reduces hydraulic pump cavitation when oil viscosity increases?
A)Lower intermolecular fluid friction
B)Increased fluid boundary layer adhesion✓
C)Decreased turbulent kinetic energy dissipation
D)Enhanced fluid shear stress resistance
💡 Explanation
Increased viscosity raises the fluid's boundary layer adhesion effect. This reduces pressure drops leading to vacuum formation because vapour pressures needed for cavitation events rise, therefore cavitation is less likely, rather than decreased turbulence, applicable at high Reynolds numbers under inertial forces.
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