Question

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

(a) circle, triangle

(b) circle, triangle with circular base

(c) triangle, triangle

(d) circle, circle

I have been asked this question in an interview.

My question is taken from Projection of Solids with Axis Inclined to Horizontal Plane and Parallel to Vertical Plane topic in chapter Projection of Solids of Engineering Drawing

Answer 1

Correct 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 of 90 degrees so previous ones will be circle and later one will be triangle.