GATE ME 2016 Set 2 — Question 35

MCQ+1 / -0.33MediumNon-Traditional MachiningMachining & Machine ToolsManufacturing Processes

Manufacturing Processes → Machining & Machine Tools → Non-Traditional Machining

Last updated 5 September 2026

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:

Correct answer (D) first increases and then decreases Solution In Ultrasonic Machining (USM), the material removal rate (MRR) initially increases with an increase in feed force because more abrasive particles are forced into the workpiece with higher impact energy. However, beyond an optimum feed force, the MRR starts to decrease. This is because excessive force can crush the abrasive particles and reduce the gap between the tool and the workpiece, which hinders the effective circulation of the abrasive slurry. Therefore, the MRR first increases and then decreases. Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

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Correct answer (D) first increases and then decreases Solution In Ultrasonic Machining (USM), the material removal rate (MRR) initially increases with an increase in feed force because more abrasive particles are forced into the workpiece with higher impact energy. However, beyond an optimum feed force, the MRR starts to decrease. This is because excessive force can crush the abrasive particles and reduce the gap between the tool and the workpiece, which hinders the effective circulation of the abrasive slurry. Therefore, the MRR first increases and then decreases.

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