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← TechnologyWhich outcome arises when a Stirling engine's regenerator experiences heat soak during its cycle?
A)Reduced engine power output and efficiency✓
B)Increased internal pressure beyond design limits
C)Lubricant breakdown causing increased friction
D)Material fatigue stemming from rapid thermal cycling
💡 Explanation
When heat soak occurs, the regenerator cannot effectively store and release heat because its temperature gradient diminishes, hindering proper heat transfer and reducing cycle efficiency. Therefore, reduced power output and efficiency occur, rather than pressure increase, lubricant breakdown, or material fatigue which result from other heat imbalances.
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