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