CBSE 12 Engineering Science Theory Question Paper I 2011 (Set 1)

Solve 2011 CBSE : Engineering Science Theory question paper I Set 1

1. A regular hexagonal pyramid of base side 30 mm and axis 75 mm long, is resting on its base on H.P. in such ,a way that one side of the base is parallel to V.P. It is cut by a section plane, perpendicular to H.P., inclined at 30° to V.P. and passing through the axis. Draw its sectional front view and top view. 15

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2. A pentagonal prism, having base side 30 mm and height 75 mm, is resting on its base on H.P., having a side parallel to V.P. and nearer the observer. A section plane, perpendicular to V.P. and inclined at 40° to H.P., cuts this prism in such a way that it passes through the mid point of the axis. Draw the development of the lateral surfaces of the truncated prism. 15

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3. Sketch free hand the front view of any two of the following: 5, 5

(i) Any ri,-eted joint

(ii) Square nut and hexagonal headed bolt assembly

(iii) Knuckle joint

(iv) Protected flanged coupling

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CBSE 12 Engineering Science Theory Question Paper I 2011 (Set 1)