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- Subject
- Machine Designmechanical-engineering-mcqs › machine-design
- Published
- 26 Jan 2019
- Last updated
- 28 May 2026
Explanation
A jam nut works by placing a smaller nut on top of the main nut, then tightening the main nut against the smaller one by slightly loosening it. This action creates friction between the two nuts, preventing them from loosening. The other options describe different locking methods such as slotted nuts, nylon inserts, and cotter pins.
More Machine Design MCQs
Practice related questions from the same subject.
- 1.What does the designation M 33 x 2 indicate for a bolt?
- 2.By which parameter are rivets typically designated?
- 3.Which of these methods provides a fixed and non-removable joint?
- 4.Given that the tearing efficiency of a riveted joint is 75%, what is the corresponding ratio of the rivet diameter to the pitch?
- 5.Where are buttress threads most commonly utilized?
- 6.What is the name of a key that fits into a curved slot machined on a shaft and can pivot within it?
- 7.What is the name of the tapered key that fits into a keyway on the hub and lies flat against the shaft?
- 8.What type of threading does a turnbuckle have on its ends?
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