Question

A pentagonal pyramid is placed on H.P on one of its base’s edge and the triangular surface containing the edge on which it is resting is making 45 degrees with H.P. Draw orthographic views and what are the front views of 1^st, 2^ndrd stages?

(a) Triangle, triangle, irregular pentagon

(b) Pentagon, irregular polygon of 4 sides, irregular polygon of 4 sides

(c) Triangle, triangle, irregular polygon of 4 sides

(d) Pentagon, irregular pentagon, irregular pentagon

I had been asked this question at a job interview.

I would like to ask this question from Projection of Solids with Axes Inclined to both Horizontal and Vertical Plane in chapter Projection of Solids of Engineering Drawing

Answer 1

Right choice is (a) Triangle, triangle, irregular pentagon

Best explanation: In the 1^st stage the solid’s axis is perpendicular to H.P and one base’s edge is perpendicular to V.P. so the front view will be triangle and then made to rest on only one edge so front view will remain same and then adjusted to a given angle so front view will be pentagon.