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If the apparent and the true inclinations of a line with HP are equal, the line is ____________(a) parallel to horizontal plane(b) parallel to vertical plane(c) parallel to profile plane(d) inclined to both reference planeI got this question in an interview for job.My question is from Projection of Straight Lines in portion Orthographic Projection, Projections of Lines, Planes and Solids of Civil Engineering Drawing

Answer»

The correct ANSWER is (B) parallel to vertical plane

Explanation: When the line is parallel to the vertical plane and PERPENDICULAR to HP then it will form a point PROJECTION on the HP and so the apparent and the TRUE inclination will be same of the line as it will resemble a point projection.



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