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Which consequence results when rapid thermal cycling induces cracks in solid oxide fuel cell ceramic?

A)Increases ionic conductivity efficiency sharply
B)Delamination reduces effective electrolyte thickness
C)Sealing failure causes fuel-air mixing
D)Electrode polarization minimizes cell voltage

💡 Explanation

Fuel-air mixing results from sealing failure as cracks propagate, because differential thermal expansion causes stress. This cracking undergoes **mechanical fatigue**, therefore fuel leaks rather than increased ion transport and concentration losses, stemming from different mechanical failures.

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