Projection of line some examples....
- 2. A straight line AB is 60 mm long. It is inclined to H.P. and V.P. by an angle of 30ᵒ and 45ᵒ respectively. Point A is 30 mm above H.P. and 20 mm in front of V.P. Draw the projections of straight line AB. a b a' b' 30 30ᵒ X Y 20 45ᵒ b2' b2 b1 b1' T.L. = a’b2’ = ab1 = 60 mm R = a’b1’
- 3. 2520 p' p q q' q3 a b a' b' 30 X Y 20 b2' b2 b3 b3' X Y q3' 1) A line PQ, 65 mm long, is inclined to H.P. by 30˚ and inclined to V.P. by 45˚. The end P is 20 mm below H.P. and 25 mm behind V.P. Point Q is in fourth quadrant. Draw its projections and find the position of the point Q. (Dec’ 14)
- 4. a b a' b' 30 X Y 20 b2' b2 b3 b3' 1220 a' a X Y b' b b3 b2' b2 2) A line AB 90 mm long is inclined at 30º to the HP. Its end A is 12 mm above the HP and 20 mm in front of VP. Its front view measures 65 mm. Draw the top view of AB & state its length. Determine the inclination of top view and line AB with VP.
- 5. a b a' b' 30 X Y 20 b2' b2 b3 b3' 3) A line AB measures 80 mm in top view and 70 mm in front view. The midpoint M of the line is 45 mm in front of VP and 35 mm above HP. The end A is 10 mm in front of VP. Draw the projections of the line and find TL, θ, . (Jun’ 14) 1035 45 m' m X Ya a' b' b b3' b3
- 6. a b a' b' 30 X Y 20 b2' b2 b3 b3' 4) The front view and top view of a line MN is inclined at an angle of 30˚ & 40˚ respectively. The front view of line MN measures 50 mm. Point M is 15 mm above H.P. and 10 mm in front of V.P. Draw the projections of line MN & find TL.(Dec’ 14)1510 m' m n' n X Y n2' n2
- 7. a b a' b' 30 X Y 20 b2' b2 b3 b3' 5) A line PQ 100mm long, is inclined at 30˚ to the H.P. and at 45˚ to the V.P. its mid point is in the V.P. and 20mm above the H.P. Draw its projections, if its end P is in the third quadrant and Q in the first quadrant (Jan’ 16) 20 X Y m' m q' p' p q q2' q2 q3
- 8. a b a' b' 30 X Y 20 b2' b2 b3 b3' 6) The front view of a line AB, 90mm long, measures 65mm. Front view is inclined to XY line by 45°. Point A is 20mm below H.P. and on V.P. Point B is in third quadrant. Draw the projections and find inclinations of line with H.P. and V.P 20 X Y a' a b' b b3 b2' b2
- 9. a b a' b' X Y b2' b2 b3 b3' 7) The distance between end projectors of the straight line KL is 48 mm. The end K is 20 mm below H.P and 25 mm behind V.P. The end L is 12 mm above H.P. and 40 mm in front of V.P. Draw the projections and finds the true length of the line. 40 20 X Y k' l' l k l3 l3' l2' 25 12 48
- 10. a b a' b' 30 X Y 20 b2' b2 b3 b3' 8) A straight line AB is 80mm long and inclined at 450 to H.P. its Elevation measures 60mm. End A is 20mm above H.P & 30mm in front of V.P. Draw its projections and find the inclination of line with V.P. (Jun’ 15) 2030 a' b' b2' b b3 b2 X Y a
- 11. a b a' b' 30 X Y 20 b2' b2 b3 b3' 9) Distance between the end projectors of a line AB is 50mm end is 20mm above H.P and 30mm in front of V.P. End B is 50mm above H.P. Length of the line is 80mm. Draw its projection.(Jun’ 15) 2030 50 a' b' b2' b2 b a X Y 50