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← ScienceWhich consequence results when thermal expansion overwhelms tolerances in a piston engine?
A)Engine efficiency markedly decreases
B)Catastrophic mechanical seizure occurs✓
C)Fuel consumption decreases sharply
D)Exhaust emissions significantly reduce
💡 Explanation
Mechanical seizure occurs because thermal expansion leads to tighter frictional interfaces and adhesion, resulting in surface welding; therefore the engine seizes, rather than allowing operation at reduced efficiency because of dimensional changes at thermal equilibrium.
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