Which risk increases when an engine's lubricating oil degrades?

💡 Explanation

Increased frictional heating becomes a risk because oil degradation reduces FILM THICKNESS, increasing contact between moving parts. This generates more friction and therefore more heat, rather than the other options which relate separately to to combustion or exhaust.

• Which outcome results when a semiconductor's band gap narrows under strain?
• When a tensile load exceeds the hydrogen bonds between the cellulose fibers in paper, which outcome occurs?
• Which outcome occurs when injecting incoherent electromagnetic pulses into optical fiber?
• Which effect on a gallium arsenide semiconductor results when impurities narrow the band gaps?
• Which operational problem arises when multiple lasers, intended for optical interferometry, lack temporal coherence?
• Which consequence results when the inertial confinement fusion (ICF) target implodes asymmetrically?