Anna University GE2111 Engineering Graphics Jan 2012 Question Paper

BE/BTech (First/Second) Semester Exam January 2012 (Regulation 2008)

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

Note: Answer ALL Questions.

1. a) Draw the involute of a circle. of diameter 50 mm when a string is unwound in the clockwise direction. Draw a tangent and normal at a point located on the involute. 20 marks

Ans: Refer ED - Basant Agrawal, TMH.

OR

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

Ans: Refer ED - Basant Agrawal, TMH

2. a) The front view of a line AB 90 mm long is inclined at 45° to XY line. The front view measures 65 mm long. Point A is located 15 mm above H.P. and is in V.P. Draw the projections and find its true inclinations. 20 marks

Ans: Refer ED - Basant Agrawal, TMH.

OR

2. b) A hexagonal lamina of side 30 mm rests on one of its edges on H.P. This edge is parallel to V.P. The surface of the lamina is inclined 60° to H.P. Draw its projections. 20 marks

Ans: Refer ED - Basant Agrawal, TMH.

3. a) A hexagonal prism of side of base 25 mm and axis 60 mm long, is freely suspended from a corner of the base. Draw the projections by the change of Position method. 20 marks

Ans: Refer ED - Basant Agrawal, TMH.

OR

3. b) A cylinder, diameter of base 60 mm and height 70 mm, is having a point of its periphery of base on H.P. with axis of the cylinder inclined to H.P. at 45° and parallel to V.P. Draw the projections of the cylinder. 20 marks

Ans: Refer ED - Basant Agrawal, TMH. 
4. a) A cone of base 75 mm diameter and axis 80 mm long is resting on its base on the H.P. It is cut by a section plane perpendicular to the V.P. and parallel to and 12 mm away from one of its end generators. Draw its front view, sectional top view and true shape of the section. 20 marks

Ans: Refer ED - Basant Agrawal, TMH

OR

4. b) A regular hexagonal pyramid side of base 30 mm and height 60 mm is resting vertically on its base on H.P. such that two of its sides of the base are perpendicular to V.P. It is cut by a plane inclined at 40° to H.P. and perpendicular to V.P. The cutting plane bisects the axis of the pyramid. Obtain the development of the lateral surface of the truncated pyramid. 20 marks

Ans: Refer ED - Basant Agrawal, TMH.

5. a) A cone of diameter of base 60 mm and height 65 mm rests with its base, on H.P. A cutting plane perpendicular to V.P. and inclined at 30° to H.P. cuts the cone such that it passes through a point on the axis at a distance of 30 mm above the base of the cone. Draw the isometric projection of the truncated cone showing the cut surface. 20 marks

Ans: Similar ED - Basant Agrawal, TMH.

OR

5. b) A square prism of base 25 x 25 mm and height 40 mm is resting on the GP on its square base with a right side rectangular face making 60° with Picture Plane. The corner nearest to the PP is 40 mm to the left of the station point and 20 mm behind the PP. The station point is 60 mm above the GP and 50 mm in front of the PP. Draw the perspective view of the prism by using Visual Ray Method. 20 marks 
Ans: Refer ED - Basant Agrawal, TMH.