Q.

In Micro-USM, using WC tool, what is the value of diameter can be achieved?

A. 1 μm
B. 3 μm
C. 5 μm
D. 7 μm
Answer» C. 5 μm
Explanation: diameter value up to 5 μm can be achieved, using micro-ultrasonic machining on glass, silicon and quartz materials.
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