CBSE Class 12 Engineering Graphics Question Paper 2010 CBSE,CCE and NCERT students can refer to the attached file. All educational material on the website has been prepared by the best teachers having more than 20 years of teaching experience in various schools. The study material available on our website for all CBSE classes and subjects have been prepared by teachers from all over the country. All study material has been carefully designed keeping into mind the latest CBSE examination trends.
(i) Attempt all the questions.
(ii) Use both sides of the drawing sheet, if necessary.
(iii) All dimensions are in millimeters.
(iv) Missing and mismatching dimensions, if any, may be suitably assumed.
(v) Follow the SP : 46-1988 codes
(with First Angle method of projection).
(vi) In no view of questions 1 and in no sectioned view of question 3, are hidden edges / lines required.
QUESTION PAPER CODE 68/1
1. (a) Construct an isometric scale, 90 mm long. 4
(b) Construct the isometric projection, to isometric scale, of a pentagonal pyramid (base edge = 40 mm and height = 90 mm), keeping it in the inverted position. The axis is perpendicular to H.P. One of its base edges is parallel to V.P. and away from that. Draw the axis and indicate the direction of viewing. Give all dimensions. 8
(c) A cone (diameter = 40 mm and height = 60 mm) is placed, centrally, with its base on the hexagonal face of a hexagonal prism (base edge = 40 mm and height = 25 mm). The common axis is perpendicular to H.P. The base of theprism is on H.P., and one of the base edges is perpendicular to V.P.Draw the isometric projection of the solids, placed together, to isometric scale. Draw the common axis and indicate the direction of viewing. Give all dimensions.
2. (a) Draw to scale 1 : 1, the standard profile of a metric thread (internal), taking enlarged pitch = 40 mm. Give standard dimensions. 9
Draw to scale 1 : 1, the. front view and top view of a Tee bolt of size M 20. Keep the axis vertical. Give standard dimensions.
(b) Sketch freehand the front view and top view of a grub screw of size M 25. Keep the axis vertical. Give standard dimensions. 6
Sketch freehand the front view and the top view of a pan head rivet, shank
diameter = 20 mm. Keep the axis vertical. Give standard dimensions.
3. Fig. 1 shows the details of a Plummer block. Assemble the parts correctly and draw, to scale 1 : 1, the front view, right half in section. 24Print title and scale used. Give 8 important dimensions.
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