Question

A circular lamina inclined to the VP appears in the front view as an ellipse of major axis 30mm & minor axis 15 mm. The major axis is parallel to both HP and VP. One end of the minor axis is in both the HP and VP. Determine the inclination of the lamina with the VP.

(a) 45^o

(b) 90^o

(c) 60^o

(d) 105^o

I have been asked this question in an online interview.

Question is taken from Projections of Planes topic in division Orthographic Projection, Projections of Lines, Planes and Solids of Civil Engineering Drawing

Answer 1

The correct choice is (c) 60^o

Easiest explanation: On measuring the value of φ by making the projection, its value is found.