Question

Truss cannot be acted upon three force members. Because the truss in a single plane.

(a) The first part of the statement is false and other part is true

(b) The first part of the statement is false and other part is false too

(c) The first part of the statement is true and other part is false

(d) The first part of the statement is true and other part is true too

The question was asked during a job interview.

Query is from Simple Trusses in section Structural Analysis of Engineering Mechanics

Answer 1

Right answer is (a) The first part of the statement is false and other part is true

The best explanation: The singular plane of the truss doesn’t mean that the trusses cannot be acted upon the three force system. They can be acted upon the three force system, possibility is that the forces might not be collinear or might be parallel to each other. But point is the trusses can be acted on the three force members too, still conditions need to specific.