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← TechnologyWhich outcome occurs when turbine RPM exceeds design thresholds in boosted engines?
A)Compressor surge induces flow instability✓
B)Increased catalytic converter efficiency occurs
C)Crankshaft torsional damping increases rapidly
D)Fuel injector pulse width lengthens optimally
💡 Explanation
Compressor surge follows because exceeding designed speed creates a pressure differential against the direction of flow causing flow Reversal – also known as compressor surge — therefore A rather than B, C, or D. The surge reduces boost rather than producing efficient catalysis.
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