Engineering graphics 1 Regular
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1. The problem provides data about two points A and B of a line AB, including their front and top view angles and the position of B above the horizontal plane. 2. The solution involves drawing the projections of the points A and B, determining the true length (TL) of the line AB, and locating its traces by extending the projections. 3. Key steps include drawing the projections at the given angles, extending lines to find the true length and true inclinations, and drawing the horizontal and vertical traces.
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Engineering graphics 1 Regular
- 1. Engineering Graphics Unit 1: Projections of Line
- 2. Problem Statement (Phase III: 2013_regular) :- The point A of line AB is in HP and 15 mm in front of VP. Its front view and top view makes 510 and 480 with HP and VP respectively. Draw the projections of line AB if its end point B is 51 mm above HP. Find its true length , true inclinations and locate its traces. Given Data:- 1. Point A is in HP 2. Point A 15 mm in front of VP 3. b’= 51 mm 4. α = 510 5. β = 480
- 3. Draw XY line and locate projection of points a and a’Step 1
- 4. Locate the projections of point B Draw a line parallel to XY line = 51 mm above HP Step 2
- 5. Draw a line a’b’ at an angle of 510Step 3
- 6. from point b’ extend projector line vertically downward From point a draw a line ab at an angle of 480 which intersect the projector line Step 4
- 7. Take a distance a’b’ and draw an arc on XY line which gets b2 ‘ extend projector b2 ‘ lines in downward direction From point b , draw parallel line to XY Draw line a b2 which gets TL and ɸ Step 5
- 8. Step 6 Take a distance ab2 as TL , put on a’ and locate on locus of point b’ which gets θ
- 9. Step 7 Draw a traces : HT extend a’b’on XY line from that draw projector which cuts ab VT extend abon XY line from that draw projector which cuts a’b’