Question

A rectangular plane surface of size 60 x 30 cm is positioned in the first quadrant and is inclined at an angle of 60 degrees with the H.P and 30 degrees with the V.P. The front views while drawing projections in 1, 2 and 3 stages are _______ _________ and __________ respectively.

(a) line, line, parallelogram

(b) line, parallelogram, line

(c) rectangle, square, square

(d) rectangle, square, parallelogram

I had been asked this question by my school principal while I was bunking the class.

My question is based upon Projection of Oblique Plane in portion Projection of Planes of Engineering Drawing

Answer 1

Right option is (a) line, line, parallelogram

For explanation: As initially the plane is assumed to be parallel to H.P the front view will be line and then the plane is tilted with respect to H.P to required angle the front view (line makes angle with H.P) remains line. Finally the plane is tilted with respect to V.P then parallelogram will form in front view.