Anna University GE2111 Engineering Graphics Jan 2009 Question Paper

BE/BTech (First/Second) Semester Exam January 2009 (Regulation 2009)

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

Note: Answer ALL Questions.

1. a) A circle of 50 mm diameter rolls on a horizontal line for 3/4 of a revolution clockwise. Draw the path traced by a point P on the circumeference of the circle. Also draw a tangent and normal at any point on the curve. 20 marks

Ans: Refer problem 4.1 Page 4.4 of ED - Basant Agrawal, TMH.

OR

1. b) Draw the front, top and right side views of the isometric view of the objectshown in Fig. 1 20 marks

Ans: Refer problem 5.5 Page 5.8 of ED - Basant Agrawal, TMH.

2. a) A straight line ST has its end S,10 mm infront of the VP and nearer to it. The mid point m of the line is 50 mm infront of the VP and 40 mm above HP. The front and top view measure on mm and 120 mm respectively. Draw the projections of the line. Also find its true length and true inclinations with the HP and the VP. 20 marks

Ans: Refer problem 6.1 Page 6.1 of ED - Basant Agrawal, TMH.

OR

2. b) A regular pentagon of 30 mm side, is resting on one of its edges on HP which is inclined at 45º to VP. Its surface is inclined at 30º to HP. Draw its projections. 20 marks

Ans: Refer problem 9.4 Page 9.5 of ED - Basant Agrawal, TMH.

3. a) Draw the projections of a cylinder of diameter 40 mm and axis 70 mm long when it rests on the VP on one of its base points. The axis of the cylinder is parallel to HP and inclined at 30º to VP. 20 marks

Ans: Refer problem 9.24 Page 9.27 of ED - Basant Agrawal, TMH.

OR

3. b) A hexagonal pyramid of base side 30 mm and axis length 60mm is reting on VP on one of its base edges with the face containing the resting edge perependicular to both HP and VP. Draw its projections. 20 marks

Ans: Refer problem 9.24 Page 9.27 of ED - Basant Agrawal, TMH.

4. a) A cone of base diameter 60 mm and axis 70 mm is resting on HP on its base. It is cut by a plane perpendicular to VP and parallel to a contour generator and is 10 mm away from it. Draw the front view, sectional top view and the true shape of the section 20 marks
Ans: Refer problem 10.7 Page 10.7 of ED - Basant Agrawal, TMH

OR

4. b) A pentagonal pyramid of base edge 25 mm and height 60 mm rests vertically on its base on the H.P. such that one of its base edge parallel to VP. It is cut by a plane, inclined at 60° to HP and passes through a point 35 mm from the apex. Draw the development of the lateral surface of the pyramid. 20 marks

Ans: Refer problem 8 Page 12.36 of ED - Basant Agrawal, TMH.

5. a) An object consists of a hemispherical vessel of 80 mm diameter which is placed centrally over a cylinder of 50 mm diameter and height of 60 mm. The cylinder in turn is placed centrally over a square prism of 60mm base side and 20 mm height. Draw the isometric projection of the object. 20 marks

Ans: Similar to problem 15.18 Page 15.15 of ED - Basant Agrawal, TMH.

OR

5. b) Draw the perspective view of a square prism of edge of base 40 mm and length 60 mm lying on a rectangular face on the ground, with a corner on PP and the bases equally inclined to PP. The station point is 60 mm in front of PP and 80 mm above GL and lies in a central plane, which is passing through the centre of the prism. 20 marks
Ans: Refer problem 1 Page 18.44 of ED - Basant Agrawal, TMH.