**Anna University**

**B.E./B.Tech. DEGREE EXAMINATIONS, JANUARY 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 a hyperbola when the distance between its focus a*n *d directrix is 50 mm *a*nd eccentricity i*s *3/2. Also draw the tangent a*n *d normal at a point 25 mm from th*e *directrix. (20)

OR

1. (b) Make free hand sketches o*f *front, top and right side views o*f *th*e *3D object shown below : (20)

Fig. 1.(b)

2. (a) A line PQ has its end P, 10 mm above t*h *e HP and 20 mm i*n *front of *t *he VP. The end Q i*s *35 mm in front of *t *he VP. The front view of *t *he line measures 75 mm. The distance between t*h *e end projectors is 50 mm. Draw th*e *projections of *t *he line a*n *d find its true length and its true inclinations with t*h *e VP an*d *HP. (20)

OR

2. (b) Draw t*h *e projections of a circle of 70 mm diameter resting on *t *he H.P. on a point A of *t *he circumference. The plane i*s *inclined to the H.P. such that t*h *e top view of it *i *s a*n *ellipse of minor axis 40 mm. The top view of *t *he diameter, through th*e *point A i*s *making an angle of 45*◦** *with *t *he V.P. Determine th*e *inclination o*f *the plane with t*h *e H.P. (20)

3. (a) An equilateral triangular prism 20 mm side of base *a *nd 50 mm long rests with one o*f *its shorter edges on HP such that the rectangular face containing t*h *e edge on which th*e *prism rests i*s *inclined at 30*◦** *to H.P. The shorter edge resting on HP is perpendicular to VP. (20)

OR

3. (b) A square pyramid of base 40 mm *a *nd axis 70 mm long has one of its triangular faces on VP *a *nd t*h *e edge of base contained by that face perpendicular to HP. Draw its projections. (20)

4. (a) A hexagonal prism of side *o*f base 35 mm an*d *axis length 55 mm rests with its base on H.P such that two o*f *the vertical surfaces a*r *e perpendicular to V.P. It is cut by a plane inclined at 50*◦** *to H.P *a *nd perpendicular to V.P a*n *d passing through a point on the axis at a distance 15 mm from t*h *e top. Draw its front view, sectional top view an*d *true shape o*f *section. (20)

OR

4. (b) Draw the development o*f *th*e *lateral surface o*f *the lower portion o*f *a cylinder of diameter 50 mm *a *nd axis 70 mm. The solid i*s *cut by a section plane inclined at 40*◦** *to HP and perpendicular to VP a*n *d passing through th*e *midpoint o*f *the axis. (20)

5. (a) Draw t*h *e isometric projection of *t *he object from t*h *e views shown in Figure 5(a). (20)

OR

5. (b) Draw th*e *perspective projection of a cube *o*f 25 mm edge, lying on a face on t*h *e ground plane, with an edge touching th*e *picture plane an*d *all vertical faces equally inclined to t*h *e picture plane. The station point is 50 mm in front *o*f th*e *picture plane, 35 mm above t*h *e ground plane and lies i*n *a central plane which is 10 mm to *t *he left o*f *the center o*f *th*e *cube. (20)