Anna University GE2111 Engineering Graphics April-May-June 2011 Question Paper

BE/BTech (First/Second) Semester Exam April/May/June 2012 (Regulation 2008)

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

Note: Answer ALL Questions.

1. a) The focus of a conic is 50 mm from the directrix. Draw the locus of a point 'P' moving in such a way that its distance from the directrix is equal to its distance from the focus. Name the curve. Draw a tangent to the curve at a point 60 mm from the directrix. 20 marks

Ans: Refer ED - Basant Agrawal, TMH.

OR

1. b) Figure 1 shows a pictorial of a machine component. Draw the free hand sketch of the folloing views using first angle method of projection. (a) Front view (b) Top view (c) Right side view. 20 marks

Ans: Refer ED - Basant Agrawal, TMH

2. a) The end P of a line PQ is 30 mm above HP and 35 mm in front of VP. The line is inclined at 35° to the HP. Its top view is 70 mm long and inclined at 40° to XY.  Draw the projections of the straight line. Find the true length and inclination of the line with the VP. 20 marks

Ans: Refer ED - Basant Agrawal, TMH.

OR

2. b) A circular plate of 60 mm diameter has a hexagonal hole of 20 mm sides centrally punched. Draw the projections of the lamina resting on the HP with its surface inclined at 30° to the HP and the diameter through the point on which the lamina rests on HP is inclined at 50° to VP. Any two parallel sides of the hexagonal hole are perpendicular to the diameter of the circular plate passing through the point on which it rests. Draw the projections. 20 marks

Ans: Refer ED - Basant Agrawal, TMH.

3. a) A cone, diameter of base 55 mm and height 60 mm, is resting 0n HP on one of its generator with axis parallel to VP. Draw the projections by the cone. 20 marks

Ans: Refer ED - Basant Agrawal, TMH.

OR

3. b) Draw the top and front views of a rectangular pyramid of sides of hase 20 x 25 mm and height 35 mm when it lies with one of its triangular faces containing the longer edge of the base on HP. This longer edge containing the triangular face lying on HP is perpendicular to VP. 20 marks

Ans: Refer ED - Basant Agrawal, TMH. 
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 and inclined at 30° to HP meeting the axis at 21 mm from the base. Draw the sectional top view and true shape of the section. 20 marks

Ans: Refer ED - Basant Agrawal, TMH

OR

4. b) Draw the development of the lower portion of a cylinder of diameter 50 mm and axis 70 mm when sectioned by a plane inclined at 40° to HP and perpendicular to VP and bisecting the axis. 20 marks

Ans: Refer ED - Basant Agrawal, TMH.

5. a) A cylinder of diameter of base 60 mm and height 70 mm rests with its base in HP. A section plane perpendicular to VP and inclined at 45° to HP cuts the cylinder such that it passes through a point on the axis 50 mm above the base. Draw the isometric projection of the truncated cylinder showing the cut surface. 20 marks

Ans: Similar ED - Basant Agrawal, TMH.

OR

5. b) A rectangular pyramid of sides of base 30 mm and 20 mm and height 35 mm rests with its base on the ground such that one, of the longer base edges is parallel to the picture plane and 30 mm behind it. The station point is 50 mm in front of the picture plane, 30 mm to the left of the axis of the pyramid and 50 mm above the ground. Draw the perspective view of the pyramid. 20 marks 
Ans: Refer ED - Basant Agrawal, TMH