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← TechnologyWhich risk increases when an internal combustion engine turbocharger overspools beyond design limits?
A)Compressor surge from choked airflow✓
B)Bearing failure from oil contamination
C)Piston knock from advanced ignition timing
D)Fuel dilution from rich air-fuel mixture
💡 Explanation
When a turbocharger overspools, compressor surge can occur, because rapid pressure fluctuations build on the compressor face reducing mass airflow leading to instability. Therefore, compressor surge results, rather than bearing, knock, or fuel dilution, which are caused by independent mechanical/chemical issues.
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