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← HistoryDuring early steam engine development, which outcome resulted from cylinder condensation decreasing thermal efficiency?
A)Increased fuel consumption✓
B)Decreased piston lifespan
C)Elevated boiler pressure
D)Reduced engine output speed
💡 Explanation
When cylinder walls cooled during the exhaust stroke, condensation of steam occurred during the subsequent intake stroke because of heat transfer, reducing the amount of steam available for work and increasing fuel consumption. Therefore, increased fuel consumption results, rather than piston damage, boiler pressure increase, or reduced speed, which would require different failures.
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