Question

Four bar mechanism is generally used in ___________________

(a) Bicycle

(b) Fan

(c) Train suspension

(d) Rickshaw

This question was posed to me in unit test.

My enquiry is from Loci of Points in division Lettering Practice, Scales & Curves of Civil Engineering Drawing

Answer 1

The correct choice is (c) Train suspension

Easiest explanation: Four-bar linkage, also called a four-bar, is the simplest movable closed chain linkage. It consists of four bodies, called bars or links, connected in a loop by four joints. Generally, the joints are configured so the links move in parallel planes, and the assembly is called a planar four-bar linkage.