CBSE Class 12 Engineering Graphics Question Paper 2007 - Set 1

CBSE Class 12 Engineering Graphics Question Paper 2007 - Set 1 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.  

ENGINEERING DRAWING

Note :

(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).

1. (a) Construct an isometric scale. 4

(b) Construct an isometric projection of a frustum of a pentagonal-pyramid, base-side = 40 mm, top-side = 30 mm and height of axis = 60 mm. When resting on H.P. with its base on it, one of the base-sides is perpendicular to V.P. and the axis is perpendicular to H.P. Give all dimensions. 10

(c) A hexagonal prism with base side = 30 mm and height = 40 mm, is resting on H.P. on its hexagonal base. One of its base sides is parallel to V.P. On the top hexagonal end, a sphere of 25 mm radius is centrally placed. Taking their common axis perpendicular to H.P., draw the isometric projection of the two solids. Give all dimensions.

2. (a) Draw to scale 1 : 1, the plan and front view of a square nut, taking nominal diameter = 25 mm, keeping its axis perpendicular to H.P. and two opposite sides of the square parallel to V.P. Give standard dimensions. 9

                                     OR

Draw to scale 1 : 1, the standard profiles of a square-thread and a knuckle-thread, taking pitch = 40 mm for each. Give standard dimensions.

(b) Sketch free-hand the front view and top view of a stud with a square-neck, keeping the axis perpendicular to H.P. Take nominal diameter = 20 mm. Give standard dimensions. 6

                                     OR

Sketch free-hand the front view and plan of a double-head feather key with gib head on both the ends, keeping its length parallel to H.P. and V.P. for a shaft of diameter = 48 mm. Give standard dimensions.

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