Question

The front and top view are sometimes not sufficient to convey all the information regarding the object. Additional views are therefore projected on other planes known as ____________

(a) auxiliary vertical plane

(b) auxiliary inclined plane

(c) auxiliary plane

(d) horizontal and Vertical plane

I had been asked this question in an internship interview.

My question is taken from Projections on Auxiliary Planes in portion Orthographic Projection, Projections of Lines, Planes and Solids of Civil Engineering Drawing

Answer 1

Right option is (c) auxiliary plane

The best I can explain: Any view obtained by a projection on a plane other than the horizontal, frontal, and profile projection planes is an auxiliary view. A primary auxiliary view is projected onto a plane that is perpendicular to one of the principal planes of projection and is inclined to the other two. A secondary auxiliary view is projected from a primary auxiliary view onto a plane that is inclined to all three principal projection planes as shown in the figure below.