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← TechnologyWhich outcome occurs when thermoelectric generator's (TEG) hot-side temperature drastically increases?
A)Increased Seebeck voltage and power output
B)Decreased electrical conductivity from phonon scattering
C)Reduced thermal gradient across TEG elements
D)Material degradation from excessive thermal stress✓
💡 Explanation
When the hot-side temperature increases drastically, differential thermal expansion causes excessive thermal stress, leading to material degradation or even failure in the thermoelectric generator array. Therefore, material degradation results, rather than improved performance (A), conductivity (B), or reduced gradient (C), which require different operating conditions.
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