Question

In an ultrasonic machining (USM) process, the material removal rate (MRR) is plotted as a function of the feed force of the USM tool. With increasing feed force, the MRR exhibits the following behavior:

• A. increases linearly
• B. decreases linearly
• C. does not change
• D. first increases and then decreases

Answer 1

The correct option is D first increases and then decreases

First increases and then decreases