railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Basic Science and Engineering Engineering Drawing
If both the front and top views of a plane are straight lines, it may be
1
Perpendicular to both horizontal and vertical planes
2
Parallel to horizontal plane and perpendicular to vertical plane
3
Perpendicular to horizontal plane and parallel to vertical plane
4
Parallel to both horizontal and vertical planes