CBSE Class 12 Engineering Graphics Boards Question Paper Solved 2018. Students can download the last year question papers using the link below. Free download of examination question papers with solutions. Last 10 year question papers should be practised to get better marks in examinations.
Answer the following Multiple Choice Questions. Print the correct choice on your drawing sheet.
(i) The truncated lower portion of a pyramid is called
(ii) In a single riveted lap joint, the plates to be joined are
(a) In contact with each other at the ends
(b) Overlapping each other
(c) Inclined to each other
(d) Kept at a distance of 10 mm from each other
(iii) Which special type of Sunk key looks like a segment of a circular disc ?
(a) Woodruff key
(b) Feather key
(c) Gib head key
(d) Rectangular taper key
(iv) Which of the following is not a part of an unprotected flange
(c) Sunk key
(v) What is the purpose of crowning on the rim of a solid cast iron pulley ?
(a) To make the belt slip off the rim
(b) To join the shaft with the rim
(c) To lubricate the rim
(d) To keep the belt in the middle of the rim
2. (i) Construct an isometric scale.
(ii) A vertical triangular pyramid (base edge 40 mm and axial height 60 mm) is resting on its base on H.P. One of its base edges is perpendicular to V.P. Draw its isometric projection. Show the axis and indicate the direction of viewing. Give all dimensions.
(iii) A sphere (diameter 50 mm) is placed centrally on the top hexagonal face of a hexagonal prism (base edge 30 mm and height 40 mm). Two base edges of the prism are parallel to V.P. The common axis is perpendicular to H.P. Draw the isometric projection of the combination of solids. Show the common axis and indicate the direction of viewing. Give all dimensions.
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