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Which outcome results when exceeding a heat engine's design speed?

A)Harmonic resonance induces structural failure
B)Increased efficiency due to enhanced convection
C)Reduced emissions from complete combustion
D)Optimal fuel consumption reduces waste

💡 Explanation

Exceeding the design speed excites natural modal frequencies. Harmonic resonance causes destructive oscillations, resulting in structural failure because energy accumulates, therefore the engine might shatter rather than slightly improve fuel economy or perform better.

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