Ultrasonic machines, used in material removal processes, require ultra – McqOptions

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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.

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