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← ScienceWhich risk increases when a turbocharger bypass valve fails to open during engine deceleration?
A)Compressor surge from backflow stagnation✓
B)Turbine overspeed due to reduced load
C)Bearing failure from oil cavitation
D)Intercooler icing from pressure drop
💡 Explanation
When the bypass valve fails to open, rapid deceleration causes pressure waves to reflect back through the compressor, disrupting airflow and causing compressor surge because the air stagnates. Therefore compressor surge is likely, rather than overspeed, bearing failure, or icing which involves other thermodynamic mechanisms.
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