Which outcome occurs when a lubricant exceeds yield stress?

💡 Explanation

Elastohydrodynamic lubrication relies on viscosity to maintain separation; because exceeding yield stress causes structural breakdown/thinning of the lubricant, the film collapses under load instead of supporting the mechanism; therefore answer C, rather than other effects that also relate to viscosity.

• Which outcome accelerates oxidation in high-temperature alloy components?
• Which outcome occurs due to decreased neutron moderator density during nuclear fission?
• Which risk increases when enriched Uranium-235 fuel rods in a nuclear reactor experience excessive neutron flux?
• Which effect results when electrons encounter nanoscale gaps?
• Which risk increases with increasing laser power density?
• Which risk increases when paraffin wax undergoes rapid melting?