GATE ME 2021 Set 1 — Question 19

MCQ+1 / -0.33EasyNC & CNC MachinesCNC & Work HoldingManufacturing Processes

Manufacturing Processes → CNC & Work Holding → NC & CNC Machines

Last updated 5 September 2026

Question

In modern CNC machine tools, the backlash has been eliminated by

Correct answer (A) preloaded ballscrews Solution Backlash is the play or clearance between the screw and the nut. In CNC machines, preloaded ballscrews are used to eliminate this. Preloading ensures that the ball bearings are in constant contact with both the screw and nut races, removing any axial play and thus eliminating backlash. Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

Review answer and solution without JavaScript

Interactive answer checking needs JavaScript. The published solution is available below.

Correct answer (A) preloaded ballscrews Solution Backlash is the play or clearance between the screw and the nut. In CNC machines, preloaded ballscrews are used to eliminate this. Preloading ensures that the ball bearings are in constant contact with both the screw and nut races, removing any axial play and thus eliminating backlash.

Continue learning with Success Tracker

Use Success Tracker to ask about the reasoning, then try another GATE ME question to check your understanding.

AI-powered practice· Unlimited practice on eligible plans

PYQs with solutions: Attempt available previous-year questions, then compare your reasoning with the worked solution. Coverage varies by stream.
Practice that adapts: Choose a topic, work on weaker areas and bookmark questions to revisit. Your attempts feed your progress tracking.
AI doubt support: Ask follow-up questions about a step or concept while practising, instead of stopping at the final answer.

Unlimited practice is available on eligible plans. Free practice and AI usage have limits; check the current plan allowances before choosing.

This page stays readable without an account. AI responses can be wrong; check them against the solution and source material.