Engineering Graphics and Design Grade 12 P2 2023 QP (Eng)

. e ok Cg ss basic education INSTRUCTIONS AND INFORMATION This question paper consists of FOUR questions. Answer ALL the questions. ALL drawings are in third-angle orthographic projection, unless otherwise stated. Department: Basic Education NATIONAL SENIOR CERTIFICATE MARKS: 100 TIME: 3 hours This question paper consists of 6 pages. | | | | Barcode label | | | Copyright reserved REPUBLIC OF SOUTH AFRICA PONS ALL drawings must be prepared using pencil and instruments, unless otherwise stated. ALL answers must be drawn accurately and neatly. ALL the questions must be answered on the QUESTION PAPER, as instructed. ALL the pages, irrespective of whether the question was attempted or not, must be re-stapled in numerical sequence in the TOP LEFT-HAND CORNER ONLY. 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. NO Any details or dimensions not given must be assumed in good proportion. FOR OFFICIAL USE ONLY QUESTION | MARKS OBTAINED |} | SIGN | MODERATED | 3] SIGN | REMARKING | 3] SIGN 1 2 Ss 4 TOTAL 2|0|0 2|0/0 2|0/0 FINAL CONVERTED MARK CHECKED BY 100 COMPLETE THE FOLLOWING: CENTRE NUMBER | CENTRE NUMBER EXAMINATION NUMBER EXAMINATION NUMBER DO NOT FOLD THIS QUESTION PAPER IN HALF. Please tum over

Engineering Graphics and Design/P2 DBE/November 2023 Downloaded fr R18 SAN 235 ASSEMBLY VIEW 1 100 VIEW 2 HANDLE 30 \RI4 G=D SECTION S-S M5 BOLT (NTS) RETAINING SPRING o10 om hlayiso.com QUESTION 1: ANALYTICAL (MECHANICAL) Given: A view of the assembled pipe wrench, third-angle orthographic views of the parts of the pipe wrench, a title block and a table of questions. The drawings are not presented to the indicated scale. Instructions: Complete the table below by neatly answering the questions, which refer to the accompanying drawings, the title block and mechanical content. [30] QUESTIONS ANSWERS In which street is the manufacturer situated? What was done by Charles on 16/08/2022? oe What is the file name? x What conventional representation is indicated by the break lines at A? What heating process is used for the tempering? What type of section is SECTION S-S? What type of section is shown in DETAIL T? e|rlola Determine the complete dimensions at: B: Cc: Measure the angle at F. What is the depth of the teeth at G? m a} ajala]a]s What does the double-dash chain line at H indicate? How many surfaces on the pipe wrench must be machined? What does the abbreviation NTS stand for? If VIEW 1 is the front view of the handle, what would VIEW 2 be called? How many parts make up the pipe wrench assembly? With reference to the tolerance, determine the minimum and the maximum dimension at J 17 What is the direction of lay that is indicated by the machining symbol? 18 What does the 0.2 on the machining symbol indicate? 19 In the space below (ANSWER 19), redraw, in neat freehand and to the same size, the given end of a stud as a SANS 10111 conventional representation. 20 In the space below (ANSWER 20), draw, in neat freehand, the symbol for the projection system used. | 34 sen RETAINING PIN TOTAL | 30 FILE NAME: SCGG213 DRAWING No. WRC13 TOLERANCE: 40,23 -0,10 JJ HAND TOOLS CC www toolsce.co.za 84 SHARK STREET DRAWING PROGRAM: AUTOCAD 2022 SCALE 1 3 DURBAN 0110 CELL: 090 314 5839 HEAT TREATMENT: TEMPERING - 860° WITH INDUCTION HEATING DRAWN BY: NOMVUNDO- DATE: 02/07/2022 ALL UNSPECIFIED RADII ARE R4, 02 CHECKED BY, CHRIS DATE: 09/08/2022 TITLE: PIPE WRENCH APPROVED BY: CHARLES, DATE: 16/08/2022 ASSEMBLY ANSWER 19. CN DETAILED REPRESENTATION CONVENTIONAL REPRESENTATION ANSWER 20 ‘SYMBOL EXAMINATION NUMBER EXAMINATION NUMBER: [2 Copyright reserved Please tum over

Engineering Graphics and Design/P2 DBE/November 2023 Downloaded from hlayiso.com 62 ASSESSMENT CRITERIA 2.1 1 GIVEN 6 2 CONSTRUCTION 3 3 POINTS + CURVE 10 PENALTIES (-) SUBTOTAL 2.1 19 QUESTION 2: LOCI NOTE: Answer QUESTIONS 2.1 and 2.2. 2.1 MECHANISM Given: * Asschematic drawing of a mechanism consisting of crank OA, sliding rod AB, horizontal groove FG and rod DE in the vertical posision * The position of centre point O on the drawing sheet Specifications and motio * The positions of centre point O and point D are fixed. * Sliding rod AB is pin-jointed at A. * Guide B slides in groove FG. * Rod DE is pin-jointed at D. * Rod DE slides through guide B. * As crank OA rotates, guide B slides back and forth in groove FG, causing rod DE to oscillate. Instructions: * Draw, to scale 1; 1, the given schematic drawing of the mechanism. * Trace the loci generated by point C and by point E for ONE complete rotation of crank OA. * Show ALL construction. [19] MAXIMUM 90° DISPLACEMENT MINIMUM DISPLACEMENT 95 180° 30° 60° 90° 120° 150° 180° ASSESSMENT CRITERIA 2.2 GRAPH CONSTRUCTION PLOTTING GRAPH 1 2 3 CAM CONSTRUCTION iB 4 CAM + CURVE QUALITY 53 PENALTIES (-) SUBTOTAL 2.2 19 2.2: CAM Given: The wedge-shaped follower and the camshaft, as well as the first 180° of the cam profile and the displacement graph in the correct position Motion: The cam imparts the following motion to the given follower over the next 180°: * There is a dwell period for 45°. * It moves inwards to the minimum displacement with uniform acceleration and retardation over the next 90° * There is a dwell period over the remainder of the rotation. Instructions: * Using a rotational scale of 10 mm = 30° and a displacement scale of 1 : 1, complete the displacement graph by adding the required motion, * Label the displacement graph and include the rotational scale. * Project and complete the cam profile * Indicate the rotation direction with an arrow. * Show ALL construction and projection. [19] SUBTOTAL 2.1 19 EXAMINATION NUMBER TOTAL| 38 EXAMINATION NUMBER: [3 Copyright reserved Please tum over

sun ssiatoa Downloaded from hlayiso.com — Os QUESTION 3: ISOMETRIC DRAWING ‘és Given: © The front view, top view and right view of a SLIDING GUIDE casting © The position of point P on the drawing sheet Instructions: Using scale 1 : 1, convert the orthographic views of the SLIDING GUIDE casting into a sectional isometric drawing on cutting plane A-A. * Make P the lowest point of the drawing Show ALL construction. * NO hidden detail is required. [40] 55 105 16, 20_, 35 >—-} ka P 48 TOP HALF OF PR | A HEXAGON \ | oI /120° ditt | > | Li PS 1 3* Pp 2 60"\ PI TPL] Ca] 96 i ASSESSMENT CRITERIA P 1 [PLACING + AUX. VIEWS 2 2 |FRONT+MIDDLE SURFACES | 20 [SECTIONED SURFACE + 3 |HatTcHING 12 4 orci + cL 6 PENALTIES () TOTAL} 40 EXAMINATION NUMBER EXAMINATION NUMBER [4 Copyright reserved Please tum over

Engineering Graphics and Design/P2 DBE/November 2023 Downloaded from hlayiso.com 30 25 30 39 15_|_15, R10] \) 34 COUPLING [3] M10 BOLT + WASHER [4] M20 @10 @20 — @36 © | 7 3 ae SEAL [7] 2 HOLES M10 ON 86 PCD / 220 3 BRACKET [1] 40 7 WASHER [8] @20 FLANGE [6] 16. 4 aN th OF LT Bag WOODRUFF KEY [5] M20 NUT [9] EXPLODED ISOMETRIC DRAWING QUESTION 4: MECHANICAL ASSEMBLY Given: * The exploded Isometric drawing of the parts of a coupling assembly, showing the position of each part relative to all the others * Orthographic views of each part of the coupling assembly Instructions: Answer this question on page 6 Draw, to scale 1: 1 and in third-angle orthographic projection, the following views of the assembled parts of the coupling assembly: 4.1 Asectional front view on cutting plane A-A as seen from the direction of the arrow on the exploded isometric drawing. The cutting plane is shown on the left view of the flange (part 6). 4.2 The left view NOTE: * Planning is essential. * The drawing must comply with the SANS 10117 guidelines. * The convention of symmetry may NOT be applied. * Show THREE faces of the M20 NUT (part 9) on the sectional front view. * Show TWO faces of the M10 BOLT (part 4) on the sectional front view. * NO hidden detail is required. [92] PARTS LIST PART QUANTITY | MATERIAL 1 | BRACKET 1 MILD STEEL 2 |BUSH 1 BRONZE 3 | COUPLING 1 MILD STEEL 4, [MIO HEXAGONAL BOLT + 1 STEEL 5 | WOODRUFF KEY 1 MILD STEEL 6 | FLANGE 1 MILD STEEL 7 | SEAL 1 RUBBER 8 | WASHER 1 STEEL 9 | M20 HEXAGONAL NUT 1 STEEL 25 JUSTICE STREET GLENVIEW www.bounty.co.za 031 345 7869 COUPLING ASSEMBLY Og BOUNTY ENGINEERING CC ALL DIMENSIONS ARE IN MILLIMETRES. Copyright reserved Please tum over

sun ssiatoa Downloaded from hlayiso.com — FOR OFFICIAL USE ONLY Ce INCORREOT ORTHOGRAPHIC PROJECTION ‘ INCORRECT OVERALL SCALE INCORRECT HATCHING PARTS NOT ASSEMBLED TOTAL PENALTIES (-) ASSESSMENT CRITERIA LEFT VIEW 1 | sraceer 5 2 | courtinc 6 3 | ruance 53 4 |miorexsor | 35 SUBTOTAL 20 SECTIONAL FRONT VIEW 1 | eracker 103 2 | susH 5 3 | courtine 183 4 | mtonex. aout 8 5 | wor | og 6 | FLaNce 8 7 | sea 2 8 | iteonur 53 SUBTOTAL | 60 GENERAL 7 |cewneunes | 3 2 | assemay 9 SUBTOTAL | 12 TOTAL| 92 PENALTIES (-) GRAND TOTAL EXAMINATION NUMBER EXAMINATION NUMBER [6 Copyright reserved