Question

A line of length 35 mm lies on vertical plane whose ends are at a distance of 15 mm and 10 mm to profile plane. What is the length in top view?

(a) 0 mm

(b) 35 mm

(c) 5 mm

(d) 34.64 mm

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

My question is from Projection of Line Contained by Plane topic in portion Projection of Lines of Engineering Drawing

Answer 1

Correct option is (c) 5 mm

For explanation: Given the line is of length 35 mm present on vertical plane and ends are at 15 and 10 mm away from a profile plane. As we imagine the projection planes we can get the top view and distance relation as given here. 15-10 =5 mm.