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In a pressurized piezoelectric oxygen sensor, which consequence results when a crystal lattice defect exists?

A)Reduced overall oxygen sensitivity
B)Increased false positive indication
C)Greater signal amplification observed
D)Elevated operational temperature threshold

💡 Explanation

Reduced oxygen sensitivity occurs because crystal lattice defects disrupt the uniformity of the piezoelectric potential, effectively reducing the sensor's ability to translate oxygen concentration into a measurable electrical signal. Therefore, sensitivity drops, rather than other signal distortions or threshold changes arise under pressure.

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