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ISC Class XII Board Exam 2019 : Geometrical and Mechanical Drawing

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ISC 12th
Indian School Certificate Examination (ISC), New Delhi

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GEOMETRICAL AND MECHANICAL DRAWING (Moxinrum Marks: 100) (Time allowed: Tltee hours) (Candidates are allowed addirional I5 minutes for only reading lhe paper. Thelt must NOT start writing during this time.) The intended mark,sfnr questiot?s or parts of questions ore given in brackets [ ]. A sheet of drawing paper size A2 (591 mnt x 420 mn) is provided. All dimensions are in millimelres. Arcs of circles less than 4 mm rqdius may be drawn freehand. All construction lines must be shown clearly. Accuracy and good draughtsmanship are essential. Letter your Nome, Index Number and Unique ldentification Number (UID) at the bottom righfhand corner of your paper in a title block I20 mm x 50 mm. Answer all Questions Questionl Draw the three views of the given object (Figure First or Third Angle: (a) (b) (c) (d) Front elevation in the direction of the The end elevation (side The plan (top I in conect projection. arrow. [10] view). [101 view). Symbol of the method of projection you have UOI chosen. 15] Question 2 Figure 2 attached, shows the details of components of a roller assembly used for transmitting power. Assemble the parts as follows: The roller (part 3, qty. 1) is placed in the middle of both the brackets (part 2, qty. 2). A spindle (part 4, qty. 1) passes through the central cavities of bracket (part 2, qty. 2) and the roller (part 3). Both the brackets are fitted with the base (part 1, qty. l) by means of bolt (part 5, qty. 4). (a) (b) (c) (d) Draw a full sectional view of the assembled components (along A Draw the plan (top view) of the complete assembly omitting all the hidden I30l details. details. Make a neat parts list for all the components, on the drawing sheet. Draw the side view of the assembly, omitting all the hidden 1219-g69 @ - B). Copyright reserved This Paper consists of 3 printed pages and tl0l I15l [0] I blank page' Turn over

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