(Common to all Branches)
Time: 3 hrs
Maximum Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary
- Figures to the right indicate full marks.
- Lines , dimensions etc. should be as per BIS SP-46.
- Retain all construction lines.
1. Figure No.1 shows the Pictorial view of an object. Draw the following view using first angle projection method (a) Sectional Front elevation at arrow X (b) Top view (c) Side view from left. 14 marks
Ans: Refer article 7.22-7.26 page 7.20-7.24 of ED - Basant Agrawal, TMH.
2. a) Draw an ellipse if the distance of focus from the directrix is 70mm and the eccentricity is 3/4. 7 marks
Ans: Refer problem 5.1 page 5.6 of ED - Basant Agrawal, TMH.
2. b) The length of the Khandala tunnel on the Mumbai-Pune expressway is 330m. On the road map, it is shown by a 16.5 cm long line. Construct a scale to show metres and to measure up to 400m. Show the length of a 289 metre long on the expressway. 7 marks
Ans: Refer problem 4.16 page 4.12 of ED - Basant Agrawal, TMH.
2. b). A link AB 80 mm long rotates about its centre for one revolution. During the same time an insect moves along the link from A to B and reaches at B. Draw the locus of an insect. 7 marks
Ans: Refer Archemedian spiral page 6.6 of ED - Basant Agrawal, TMH.
3. a) A line CD has its end C is 15 mm above H.P. and 10mm in front of V.P. The end D is 60 mm above H.P. The distance between the end projectors is 50 mm. The line is inclined to H.P. by 25° . Draw the projections and find its inclination with V.P. and true length of line CD and draw also traces. 7 marks
Ans: Refer problem 9.31 page 9.33 of ED - Basant Agrawal, TMH.
3. b) A pentagon plate, side 40mm is resting on H.P. on one of its corners with opposite edge to the corner making 30° with V.P. The plate is inclined to H.P. by 45° . Draw its projections. 7 marks
Ans: Similar to problem 10.14 page 10.16 of ED - Basant Agrawal, TMH.
3. a) A line AB, 75 mm long, has its end A 20mm below H.P. and 25 mm behind V.P. The end B is 50 mm below H.P. and 65 mm behind V.P. Draw the projections of line AB and find its inclinations with H.P. and V.P. 7 marks
Ans: Refer problem 9.24 page 9.27 of ED - Basant Agrawal, TMH.
3. b) A pentagon of 40 mm side is resting on one of its corners on the VP. The edge opposite to that corner makes an angle of 30° to the HP. The surface of the pentagon is inclined at 45° to the VP. Draw its projections 7 marks
Ans: Refer problem 10.17 page 10.18 of ED - Basant Agrawal, TMH.
Ans: Similar to problem 11.41 page 11.42 of ED - Basant Agrawal, TMH.
4. A triangular prism, with a base side of 50mm and an axis length of 70 mm, is resting on a rectangular face on the HP, the axis being parallel to the VP. An AIP inclined at 45 degree to the HP cuts the prism. The cutting plane intersects the axis at a distance of 30 mm from one end of the prism. Draw Front View, Sectional Top view and sectional side view of the prism. 14 marks
Ans: Refer problem 12.15 page 12.17 of ED - Basant Agrawal, TMH.
5. Fig. No. 2 shows two views of an object. Draw the Isometric Projection using isometric scale. 14 marks
Ans: Refer article 15.14 page 15,18 of ED - Basant Agrawal, TMH.
5. The development of a cone is a semicircle of 80mm radius having a circular hole of 80mm diameter. Draw the plan and elevation of the cone along with periphery of a circular hole shown on them. 14 marks
Ans: Refer Fig. 13.49 page 13.44 of ED - Basant Agrawal, TMH.
