[Solved] The positions of reference line and top view in 1st angle projection are

Civil Engineering
Engineering Graphics
The positions of reference line and top ...

Q.	The positions of reference line and top view in 1st angle projection are
A.	reference line lies above the top view
B.	reference line lies below the top view
C.	reference line lie left side to top view
D.	reference line lie right side to top view
Answer» A. reference line lies above the top view
Explanation: reference line will be the xy line which is formed by intersection of vertical plane and horizontal plane. in the first angle projection the projections of object is taken by placing object in 1st quadrant and top view is projected on to horizontal plane which is after the reference line.

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