How does the rated lifespan of a bearing change in relation to the applied load?

Machine Design MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

PPSCFPSCNTSPakistan govt jobs
Subject
Machine Designmechanical-engineering-mcqs › machine-design
Published
26 Jan 2019
Last updated
28 May 2026

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Choose the correct answer

Explanation

The rated life of a bearing is inversely proportional to the cube of the applied load, meaning that as the load increases, the bearing life decreases at a rate proportional to the load cubed. The other options either overestimate or underestimate this relationship.

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