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← ScienceWhich risk increases when a piezoelectric crystal in a high-frequency accelerometer experiences excessive mechanical stress?
A)Signal aliasing at resonant frequencies
B)Debye relaxation causing signal damping
C)Crystal lattice dislocations reducing sensitivity✓
D)Increased Johnson noise floor obscures signal
💡 Explanation
Crystal lattice dislocations reduce sensitivity in the accelerometer because applied stress causes the mechanism of plastic deformation. This introduces permanent imperfections, therefore signal output is decreased rather than increased noise, aliasing, or damping.
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