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← TechnologyWhich risk increases when an engine crankshaft operates constantly at high resonant frequency?
A)Bearing failure from oil film breakdown✓
B)Piston damage from increased combustion pressure
C)Valve float from diminished spring force
D)Fuel injector clogging from thermal stress
💡 Explanation
When an engine crankshaft operates continuously at its resonant frequency, excessive vibration induces oil film breakdown from increased localized heat production at the bearings, leading to friction and eventual bearing failure. Therefore, bearing failure results, rather than piston damage, valve float, or injector clogging, each driven by other independent mechanisms.
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