Which of the following is true about USM?

1.	Which of the following is true about USM?
A.	There is direct contact between the tool and the workpiece
B.	There is no direct contact between the tool and the workpiece
C.	This process is not suitable for machining of brittle materials
D.	This process consumes very less power
Answer» C. This process is not suitable for machining of brittle materials

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Which of the following is true about USM?

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