engineering graphics

1. F
A
B
C
V
E
1
1’
Given CF=65mm
Given, eccentricity=3/4. Therefore divide CF in 7 equal
parts and mark V at 3rd division from F
Draw an ellipse by general method, given distance of focus from
directrix 65mm and eccentricity ¾.

2. a
b c
d
ef
a’
b’
f’
c’
e’ d’
a’
b’
f’
c’
e’
d’
45°
a1
f1 e1
d1
b1 c1
60°
a1
b1
c1
d1
e1
f1
a1’
b1’
c1’
d1’
e1’
f1’
PROBLEM
A regular hexagon of 40mm side has a corner in the HP.
Its surface inclined at45° to the HP and the top view of
the diagonal through the corner which is in the HP
makes an angle of 60° with the VP. Draw its projections.
Plane parallel to HP
Plane inclined to HP
at 45°and ┴ to VP
Top view of the diagonal
making 60° with the VP.
YX

3. P1
1’
2’
3’
4’
5’
6’
7’
9’
8’
10’
11’
12’
1
2
3
4
5
6
7
8
9
10
11
12
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12

4. PROBLEM: A point moves in a plane in such a way that its distance from a fixed point is equal to its distance from a fixed line. The
distance between fixed point and the fixed line is 65 mm.
A
B
C D
E
1
1’
F
2’
2
3’
3
4’
4