Question

Which of the following parts are mostly manufactured by using copper alloys?

(a) Pistons

(b) Engine blocks

(c) Journal bearings

(d) Aircrafts

I have been asked this question in a national level competition.

I need to ask this question from Copper Alloys in section Foundry Introduction & Materials of Casting-Forming-Welding II

Answer 1

The correct option is (c) Journal bearings

Easy explanation: In the manufacturing of journal and other types of solid bearings, copper alloys are mostly preferred. Many other components like worm wheels, gear selector forks and electricity wires are also made by using copper alloys; it is mostly preferred where low friction and high wear resistance is required.