Question

A regular cone having its axis parallel to H.P and perpendicular to V.P at first but then the cone’s axis keeping parallel to H.P and rotated such that its new axis is perpendicular to the previous axis. The front view of the previous and later one is _____________

(a) Circle, triangle

(b) Circle, triangle with circular base

(c) Triangle, triangle

(d) Circle, circle

The question was posed to me during an online interview.

My question comes from Projections of Solids with Axis Inclined to Vertical Plane and Parallel to Horizontal Plane topic in division Projection of Solids of Engineering Drawing

Answer 1

Right answer is (a) Circle, triangle

Explanation: Given a regular cone which means the projection to its base gives circle shape and other orthographic views give triangle. But here given is inclination it may give irregular shape in its front view if the angle is acute angle but here given is 90 degrees so we get triangle.