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← ScienceWhich consequence results when a heat engine experiences exhaust backpressure?
A)Reduced thermal efficiency and overheating✓
B)Increased power output at peak efficiency
C)Decreased cylinder wear and emissions
D)Optimization of the Carnot cycle limits
💡 Explanation
Backpressure forces exhaust to do more work. Less net work is done by the engine's piston because pressure increases; therefore efficiency suffers, rather than producing more power under ideal Carnot conditions or reducing component wear.
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