Engineering Graphics–May / June 2010 Question Paper

Anna University

B.E./B.Tech. DEGREE EXAMINATIONS, MAY/JUNE 2010

Regulations 2008

First Semester

Common to all branches

GE2111 Engineering Graphics

Time: Three Hours

Maximum: 100 Marks

Answer ALL Questions

(5 x 20 = 100 Marks)

1. (a) Draw t he locus of a point P which moves i n a plane in such a way that the ratio of its distances from a fixed point F a nd a fixed straight line AB is always 2/3. The distance between t he fixed point F a nd fixed straight line i s 50 mm. Also draw a tangent and normal on a point on th e locus at a horizontal distance of 55 mm from t he fixed straight line. (20) OR

1. (b) Draw free hand sketches of t he front, top a nd right side views of the object shown in Fig. 1(b). (20)

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2. (a) The projections of a line measures 80 mm i n th e top view a nd 70 mm i n t he front view. The mid point of the line is 45 mm i n front of VP a nd 35 mm above HP. One end i s 10 mm i n front of VP and nearer to it. The other end is nearer to HP. Draw t he projections of t he line. Find t he true length and true inclinations. (20)

OR

2. (b) A square lamina ABCD of 40 mm side rests on the corner C such that the diagonal AC appears to be at 30 to th e VP i n t he top view. The two sides BC a nd CD containing the corner C make equal inclinations with th e HP. The surface of t he lamina makes 45 with HP. Draw th e top a nd front views. (20)

3. (a) Draw t he projections of a cone of base diameter 50 mm and axis of length 70 mm resting on t he ground on one of its generators with t he axis of cone parallel to VP. (20)

OR

3. (b) A right regular hexagonal pyramid, edge of base 25 mm and height 50 mm, rests on one of its base edges on HP with its axis parallel to VP. Draw the projections of t he pyramid when its base makes a n angle of 45 to the HP.

(20)

4. (a) A square pyramid of base side 25 mm and height 40 mm rests on HP with its base edges equally inclined to VP. It is cut by a plane perpendicular to VP a nd inclined at 30 to HP meeting t he axis at 21 mm from t he base. Draw the sectional top view an d true shape of t he section. (20)

OR

4. (b) A vertical hexagonal prism of 30 mm side of base a nd axis 65 mm long has one of its rectangular faces parallel to VP and nearer to it. A circular hole of 40 mm diameter is drilled through t he prism completely such that th e axis of t he hole bisects t he axis of the prism at right angles and is perpendicular to VP. Draw t he development of t he prism showing the shape of the hole on it. (20)

5. (a) A right circular cone of diameter 30 mm base a nd height 36 mm rests centrally on top of a square block of 48 mm side and 22 mm thick. Draw th e isometric projection of t he two solids. (20)

OR

5. (b) A pentagonal pyramid side of base 25 mm a nd height 50 mm rests with one of its corner of the base touching th e picture plane and th e base edges passing through this corner making equal inclinations with t he picture plane. The station point i s on t he central line, 100 mm in front of t he picture plane and 75 mm above th e ground. Draw t he perspective view of t he pyramid. (20)