Question

A truss structure consists only ___ force members.

(a) Only one

(b) Two

(c) Three

(d) Poly

This question was addressed to me in an interview.

I need to ask this question from Plane Trusses in section Trusses of Finite Element Method

Answer 1

Correct choice is (b) Two

To explain I would say: Truss elements are two node members which allow arbitrary orientation in XYZ co-ordinate system. Truss transmits axial force only, in general, three degree of freedom element. A truss structure consists only 2 truss members.