Anna University GE2111 Engineering Graphics June 2010 Question Paper

BE/BTech (First/Second) Semester Exam May-June 2010 (Regulation 2008)

(Common to all Branches)
Time: 3 hrs
Maximum Marks: 100
Minimum Marks: 35

Note: Answer ALL Questions.

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

Ans: Refer problem 5.2 Page 5.6 of ED - Basant Agrawal, TMH.

OR

1. b) Draw free hand sketches of the front, top and right side views of the object shown in Fig. 1. 20 marks

Ans: Refer problems 7.1-7.11 Page 7.10-7.13 of ED - Basant Agrawal, TMH.

2. a) The projections of a line measures 80 mm in the top view and 70 mm in the front view. The mid-point of the line is 45 mm in front of V.P. and 35 mm above H.P. One end is 10 mm in front of V.P. and nearer to it. The other end is nearer to H.P. Draw the projections of the line. Find the true length and true inclinations. 20 marks

Ans:

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 30º to the V.P. in the top view. The two sides BC and CD containing the corner C make equal inclinations with the H.P. The surface of the lamina makes 45º with H.P. Draw the top and front views. 20 marks

Ans: Refer problem 10.14 Page 10.16 of ED - Basant Agrawal, TMH.

3. a) Draw the projections of a cone of base diameter 50 mm and axis of length 70 mm resting on the ground on one of its generators with the axis of cone parallel to V.P. 20 marks

Ans: Refer problem 11.14 Page 11.17 of ED - Basant Agrawal, TMH.

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 H.P. with its axis parallel to V.P. Draw the projections of the pyramid when its base makes a n angle of 45◦ to the H.P. 20 marks

Ans: Refer problem 11.1 Page 11.5 of ED - Basant Agrawal, TMH.

4. a) A square pyramid of base side 25 mm and height 40 mm rests on H.P. with its base edges equally inclined to V.P. It is cut by a plane perpendicular to V.P. and inclined at 30◦ to H.P. meeting the axis at 21 mm from the base. Draw the sectional top view an d true shape of the section. 20 marks
Ans: Refer problem 12.19 Page 12.21 of ED - Basant Agrawal, TMH

OR

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

Ans: Refer problem 13.20 Page 13.19 of ED - Basant Agrawal, TMH.

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

Ans: Similar to problems 15.19-15.21 Page 15.16 of ED - Basant Agrawal, TMH.

OR

5. b) A pentagonal pyramid side of base 25 mm and height 50 mm rests with one of its corner of the base touching the picture plane and the base edges passing through this corner making equal inclinations with the picture plane. The station point i s on the central line, 100 mm in front of the picture plane and 75 mm above the ground. Draw the perspective view of the pyramid. 20 marks
Ans: Refer problem 17.14 Page 17.19 of ED - Basant Agrawal, TMH.