Circular plane Projection
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A circle of diameter 70mm is drawn on the horizontal plane (HP). The plane is inclined such that the top view is an ellipse with a minor axis of 40mm. A diameter of the circle passes through a point A on the circumference and makes an angle of 45 degrees with the vertical plane (VP). The document provides step-by-step instructions to determine the inclination of the inclined plane with respect to the HP based on the given information.
Circular plane Projection
- 1. Draw the Projection of a circle of 70mm diameter on the HP. On a Point A of the circumference. The plane is inclined to the HP such that the top view is an ellipse of minor axis 40mm.The top view of the diameter ,through the point A is making an angle of 450 with the VP. Determine the inclination of plane with HP Anna University Question on Engineering Graphics And Engineering Drawing as per JNTU Circular plane Projection For First year Engineering students of all branch
- 2. Draw XY line as shown X Y Prof.S.Rajendiran, Ashoka Institution
- 3. 1.Draw a circle as shown 70 Ø X Y Prof.S.Rajendiran, Ashoka Institution Since top view is an ellipse of minor axis 40mm. And hence the surface makes an angle with HP Therefore we need to Draw a circle in HP so that surface parallel to HP and lying on HP
- 4. 2.Draw projector as shown X Y Prof.S.Rajendiran, Ashoka Institution
- 5. X Y Prof.S.Rajendiran, Ashoka Institution 3.Draw front view as shown
- 6. X Y Prof.S.Rajendiran, Ashoka Institution 4.Divide the circle as shown
- 7. X Y Prof.S.Rajendiran, Ashoka Institution a 1 2 3 4 5 6 7 8 9 10 11 5.Mark the point as shown
- 8. X Y Prof.S.Rajendiran, Ashoka Institution a 1 2 3 4 5 6 7 8 9 10 11 6.Draw Projectors as shown
- 9. X Y Prof.S.Rajendiran, Ashoka Institution a 1 2 3 4 5 6 7 8 9 10 11 7.Mark the point as shown
- 10. X Y Prof.S.Rajendiran, Ashoka Institution a 1 2 3 4 5 6 7 8 9 10 11 11’ 1’ 10’ 2’ 9’ 3’ 8’ 4’ 5’ 7’ 6’ a’ 8.Name the points as shown
- 11. X Y Prof.S.Rajendiran, Ashoka Institution a 1 2 3 4 5 6 7 8 9 10 11 11’ 1’ 10’ 2’ 9’ 3’ 8’ 4’ 5’ 7’ 6’ a’ 40 9.Draw a line 40mm equal to minor axis on XY line as shown
- 12. X Y Prof.S.Rajendiran, Ashoka Institution a 1 2 3 4 5 6 7 8 9 10 11 11’ 1’ 10’ 2’ 9’ 3’ 8’ 4’ 5’ 7’ 6’ a’ 10.Draw a vertical line as shown
- 13. X Y Prof.S.Rajendiran, Ashoka Institution a 1 2 3 4 5 6 7 8 9 10 11 11’ 1’ 10’ 2’ 9’ 3’ 8’ 4’ 5’ 7’ 6’ a’ 11.Transfer the front view as shown
- 14. X Y Prof.S.Rajendiran, Ashoka Institution a 1 2 3 4 5 6 7 8 9 10 11 11’ 1’ 10’ 2’ 9’ 3’ 8’ 4’ 5’ 7’ 6’ a’ 12.Draw vertical projectors as shown
- 15. X Y Prof.S.Rajendiran, Ashoka Institution a 1 2 3 4 5 6 7 8 9 10 11 11’ 1’ 10’ 2’ 9’ 3’ 8’ 4’ 5’ 7’ 6’ a’ 13.Draw horizontal projector as shown
- 16. X Y Prof.S.Rajendiran, Ashoka Institution a 1 2 3 4 5 6 7 8 9 10 11 11’ 1’ 10’ 2’ 9’ 3’ 8’ 4’ 5’ 7’ 6’ a’ 111 11 101 21 91 31 81 41 51 71 61a1 14.Name the inter section points as shown
- 17. X Y Prof.S.Rajendiran, Ashoka Institution a 1 2 3 4 5 6 7 8 9 10 11 11’ 1’ 10’ 2’ 9’ 3’ 8’ 4’ 5’ 7’ 6’ a’ 111 11 101 21 91 31 81 41 51 71 61a1 15.Join the points as shown to get ellipse
- 18. X Y Prof.S.Rajendiran, Ashoka Institution a 1 2 3 4 5 6 7 8 9 10 11 11’ 1’ 10’ 2’ 9’ 3’ 8’ 4’ 5’ 7’ 6’ a’ 111 11 101 21 91 31 81 41 51 71 61a1 450 16.Draw a line 450 as shown
- 19. X Y Prof.S.Rajendiran, Ashoka Institution a 1 2 3 4 5 6 7 8 9 10 11 11’ 1’ 10’ 2’ 9’ 3’ 8’ 4’ 5’ 7’ 6’ a’ 111 11 101 21 91 31 81 41 51 71 61a1 17.Transfer top view as shown
- 20. X Y Prof.S.Rajendiran, Ashoka Institution a 1 2 3 4 5 6 7 8 9 10 11 11’ 1’ 10’ 2’ 9’ 3’ 8’ 4’ 5’ 7’ 6’ a’ 111 11 101 21 91 31 81 41 51 71 61a1 18.Draw horizontal projectors as shown
- 21. X Y Prof.S.Rajendiran, Ashoka Institution a 1 2 3 4 5 6 7 8 9 10 11 11’ 1’ 10’ 2’ 9’ 3’ 8’ 4’ 5’ 7’ 6’ a’ 111 11 101 21 91 31 81 41 51 71 61a1 19.Draw vertical projectors as shown
- 22. X Y Prof.S.Rajendiran, Ashoka Institution a 1 2 3 4 5 6 7 8 9 10 11 11’ 1’ 10’ 2’ 9’ 3’ 8’ 4’ 5’ 7’ 6’ a’ 111 11 101 21 91 31 81 41 51 71 61a1 a2’ 62’ 32’ 42’ 82’ 22’ 102’ 92’ 12’ 112’ 52’72’ 20.Mark and Name Intersection points as shown
- 23. X Y Prof.S.Rajendiran, Ashoka Institution a 1 2 3 4 5 6 7 8 9 10 11 11’ 1’ 10’ 2’ 9’ 3’ 8’ 4’ 5’ 7’ 6’ a’ 111 11 101 21 91 31 81 41 51 71 61a1 a2’ 62’ 32’ 42’ 82’ 22’ 102’ 92’ 12’ 112’ 52’72’ 22.Join the points with smooth curve as shown
- 24. X Y Prof.S.Rajendiran, Ashoka Institution a 1 2 3 4 5 6 7 8 9 10 11 11’ 1’ 10’ 2’ 9’ 3’ 8’ 4’ 5’ 7’ 6’ a’ 111 11 101 21 91 31 81 41 51 71 61a1 a2’ 62’ 32’ 42’ 82’ 22’ 102’ 92’ 12’ 112’ 52’72’ 450 40 70 TOP VIEW FRONT VIEW ALL DIMENSIONS ARE IN mm SCALE 1:1 VP HP