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1. |
Ultrasonic machines, used in material removal processes, require ultrasonic transducers. The transducers work on different working principle. One of the working principles of such ultrasonic transducers is based on |
A. | eddy current effect |
B. | Seebeck effect |
C. | piezo-resistive effect |
D. | piezo-electric effect |
Answer» E. | |