Engineering Graphics and Design Grade 12 P2 2015 QP (Eng)

Downloaded from hlayiso.com INSTRUCTIONS AND INFORMATION 1. This question paper consists of FOUR questions. 2. Answer ALL the questions. 3. ALL drawings are in third-angle orthographic projection, unless otherwise stated. 4. ALL drawings must be completed using instruments, unless otherwise stated. GRADE 12 5. ALL answers must be drawn accurately and neatly. 6. ALL the questions must be answered on the QUESTION PAPER as instructed. 7. ALL the pages must be re-stapled in numerical sequence, irrespective of whether the question was attempted. 8. Time management is essential in order to complete all the questions. 9. Print your examination number in the block provided on every page. 10. Any details or dimensions not given must be assumed in good proportion. NATIONAL SENIOR CERTIFICATE FOR OFFICIAL USE ONLY QUESTION MARKS OBTAINED ½ SIGN MODERATED ½ SIGN GRADE 12 1 2 3 ENGINEERING GRAPHICS AND DESIGN P2 4 TOTAL FEBRUARY/MARCH 2015 2 0 0 2 0 0 MARKS: 100 FINAL CONVERTED MARK CHECKED BY TIME: 3 hours _______ 100 This question paper consists of 6 pages. COMPLETE THE FOLLOWING: CENTRE NUMBER CENTRE NUMBER EXAMINATION NUMBER EXAMINATION NUMBER *BASIC-EDUCATION* Copyright reserved Please turn over

Engineering Graphics and Design/P2 Downloaded frgm hlayiso.com DBE/Feb.-Mar. 2015 aa 200 12 HOLE @26 x 5 SPOT FACE QUESTION 1: ANALYTICAL (MECHANICAL) Given: A front view, top view and right view of a box and gland assembly, detailed drawing of the flange, a title block and a table of questions. The drawings have not been prepared to the indicated scale. Instructions: Complete the table below by neatly answering the questions, which all refer to the accompanying drawings and the title block. [30] QUESTIONS ANSWERS On what date was the drawing approved? What is the title of the assembly? What scale is indicated for the drawing? What material is used to manufacture the bush? On what date was the revision done? What is the drawing number? What would VIEW 3 be called? What type of section is shown in VIEW 1? What part is used to protect the flange surface when the nut is being tightened? 10 Name the part at R 11 Name the feature at S. 12 Name the feature at T. 8 13, How many surfaces need to be machined? 14 Give the complete dimensions at: A 15, Determine the complete dimensions at: c | [18 With reference to the tolerance, determine the maximum dimension at E. 258 VIEW 1 ALL DIMENSIONS ARE IN MILLIMETRES SCALE: 1:2 DRAWING PROGRAM: AUTOCAD 2013 FINISH: POLISHED FILE NAME: ANAS15.dwg QUANTITY: 325 UNITS DRAWING No. BG-15/4 MACHINING: MILLING 17 With reference to the tolerance, determine the minimum dimension at E. 18 Insert the cutting plane on VIEW 3 and label it A-A. 19 VIEW 3 In the space provided below, draw, in neat freehand, the symbol for the projection system used, TOTAL 30 PARTS LIST ANSWER 19 PART MATERIAL QUANTITY BASE CAST IRON 1 UNLESS OTHERWISE SPECIFIED, ALL TOLERANCES ON DIMENSIONS ARE +0,15, ALL UNSPECIFIED RADII ARE R3. 2, FLANGE MILD STEEL 1 1. INSERT SPOT FACE 2014/02/03 sTUD MILD STEEL 2 PEWIJO ENGINEERING 15 FABRICIA ROAD KLISSERVILLE KIMBERLEY 8301 F051 6273 849 REVISIONS DATE SHAFT HARDENED STEEL 1 DRAWN: ALFA 2014/01/01 BUSH RUBBER 1 CHECKED: BRAVO 2014/02/02 WASHER MILD STEEL 2 TITLE BOX AND GLAND APPROVED: ZERO 2014/03/03 NUT MILD STEEL 2 Copyright reserved SYMBOL EXAMINATION NUMBER EXAMINATION NUMBER [2 Please tum over

Engineering Graphics and Design/P2 Downloaded frgm hlayiso.com sch Copyright reserved QUESTION 2: Loc! HELIX Given: © The left view of a square spring with RS indicating starting position * The position of centre point T on the drawing sheet Specifications: * Pitch =72 © Spring profile = 24x24 * Direction = Right-handed Instructions: Draw, to scale 1 : 1, the following: 2.1 The given left view with point T as reference 2.2 The front view for TWO turns of the square spring * Show ALL necessary construction. * No hidden detail is required [37] ASSESSMENT CRITERIA 4 | GIVEN+ CENTRE LINES | 4s + STARTING POINT 2 2 | CONSTRUCTION 8 3 | OUTSIDE POINTS + 145 CURVE + QUALITY 2 4 | INSIDE POINTS + cURVE | 4, + QUALITY PENALTIES () TOTAL} 37 EXAMINATION NUMBER EXAMINATION NUMBER [3 Please tum over

Engineering Graphics and Design/P2 Downloaded frgm hlayiso.com sch aa Copyright reserved QUESTION 3: ISOMETRIC DRAWING Given: © The front view, top view and left view of a machine switch with cutting plane A-A * The position of point P on the drawing sheet Instructions: Using scale 1: 1, convert the orthographic views of the machine switch into a sectional isometric drawing on cutting plane A-A. * Make P the lowest point of the drawing. * Show ALL necessary construction. NO hidden detail is required [39] 40 410 30 90. 36. 110. ASSESSMENT CRITERIA 1 | AUX. VIEW+PLACING | 3 ISOMETRIC + 1 NON-ISOMETRIC LINES: 16 ISO' CIRCLES + CIRCLE CONSTRUCTION 5 4 | SECTIONED SURFACES | 11 5 | HATCHING 34 PENALTIES (-) TOTAL | 39 EXAMINATION NUMBER EXAMINATION NUMBER [4 Please tum over

Engineering Graphics and Design/P2 Downloaded frgm hlayiso.com sch aa 12 SEAL [2] —} 4 ee ELUPSE a 100 78 930 | T i | tra a2 BASE [3] EXPLODED ISOMETRIC DRAWING M12 M12 NUT [7] Copyright reserved 58 SHAFT [1] 20 44 @4 Polo ——a GUIDE PIN [4] \R10 | ox WASHER [6] QUESTION 4: MECHANICAL ASSEMBLY Given: * The exploded isometric drawing of the parts of a distribution box lock assembly, showing the position of each part relative to all the others * Orthographic views of each of the parts of the distribution box lock assembly Instructions: * Answer this question on page 6. * Draw, to scale 2 : 1 and in third-angle orthographic projection, the following views of the assembled parts of the distribution box lock assembly: 4.1 A sectional front view on cutting plane A-A, as seen from the direction of the arrow shown on the exploded isometric drawing. The cutting plane, which passes vertically through the centre of the assembly, is shown on the right view of the base (part 3). 4.2 The right view * ALL drawing must comply with the guidelines contained in the SANS 10111 NOTE: * Show THREE faces and ALL necessary construction of the M12 nut. Show ALL necessary construction of the ellipse. Show ALL necessary construction of the triangle. * Add cutting plane A-A to the drawing. NO hidden detail is required. [94] PARTS LIST PART QUANTITY MATERIAL 4 | SHAFT 1 STAINLESS STEEL 2 | SEAL 1 RUBBER 3 [BASE 1 CAST IRON 4 | GUIDE PIN 1 MILD STEEL 5 | LOCKING LEVER 1 MILD STEEL 6 | WASHER: 1 MILD STEEL 7 [12 NUT 1 MILD STEEL ENGINEERING CC wow jpwengineering,co.za DISTRIBUTION BOX LOCK ALL DIMENSIONS ARE | ALL UNSPECIFIED © 4 INMILLIMETRES RADII ARE R3. BI Please tum over

vovnn apna Downloaded frgm hlayiso.com DBE/Feb.-Mar. 2015 PENALTIES NOT IN THIRD ANGLE INCORRECT OVERALL SCALE INCORRECT HATCHING TOTAL PENALTIES (-) ASSESSMENT CRITERIA SECTIONAL FRONT VIEW 1 | sHAFT 47} 2 | SEAL 2 3 | BASE 184 4 | GUIDE PIN 2s 5 | LOCKING LEVER 7 6 | WASHER, 2d 7 | M12 NUT 6} SUBTOTAL 564 RIGHT VIEW 1 | SHAFT 5 2 | M12 NUT 4 3 | WASHER 1 4 | LOCKING LEVER 43 5 | BASE 9 6 | GUIDE PIN 1 7 | CUTTING PLANE 3 SUBTOTAL 27d GENERAL 1 | CENTRE LINES 4 2 | ASSEMBLY 6 SUBTOTAL 10 TOTAL | 94 TOTAL PENALTIES (-) FINAL TOTAL EXAMINATION NUMBER (NN Saunenaiaes ——T8