1.

Drilling in Ultrasonic Machining is done, by which motion of the tool?(a) Only rotation(b) Only oscillation(c) Oscillation and rotation(d) None of the mentionedI have been asked this question in exam.The doubt is from USM topic in chapter Mechanical Processes of Advanced Machining

Answer»

Correct CHOICE is (c) OSCILLATION and rotation

Easiest explanation: The PROCESS, which uses USM for DRILLING, is known as Rotary Ultrasonic Machining (RUM).



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