Question

If a solid is positioned that its axis is perpendicular to one of the reference plane. Which of the following is false?

(a) Axis is parallel to other reference plane

(b) Base is parallel to reference plane

(c) Projection on that plane gives true shape of its base

(d) Base is perpendicular to horizontal plane

This question was posed to me in a national level competition.

The question is from Projection of Solids in Simple Position topic in section Projection of Solids of Engineering Drawing

Answer 1

Right answer is (d) Base is perpendicular to horizontal plane

To explain: If solid’s axis is perpendicular to H.P the base is parallel to H.P and projection on to the H.P gives the true shape of base and similar to V.P and P.P. But here in question it is not specified that given solid’s axis is perpendicular to V.P.