Engineering Graphics and Design Grade 12 P2 NSC June 2019 QP

Downloaded from hlayiso.com basic education Department « y) Basic Education "4 REPUBLIC OF SOUTH AFRICA SENIOR CERTIFICATE EXAMINATIONS/ Copyright reserved NATIONAL SENIOR CERTIFICATE EXAMINATIONS FOR OFFICIAL USE ONLY question || marks ostaineo | 3] sicn | overated [3] sien |) Rewarkinc |3| sion 1 2 ENGINEERING GRAPHICS AND DESIGN P2 3 2019 a TOTAL MARKS: 100 2/|0/0 2|0/0 2|0/0 TIME: 3 hours FINAL CONVERTED MARK CHECKED BY 100 FO d This question paper consists of 6 pages. Barcode label 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. 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. Any details or dimensions not given must be assumed in good proportion. ONS NOn COMPLETE THE FOLLOWING: CENTRE NUMBER CENTRE NUMBER EXAMINATION NUMBER EXAMINATION NUMBER Please tum over

Engineering Graphics and Design/P2 Downloaded fram hlayiso.com DBE/2019 Le ‘8 23 26 QUESTION 1: ANALYTICAL (MECHANICAL) 7 Given: The front view and the right view of a compass, two detailed enlargements, a parts list, a title block, a welding symbol and a table of questions. The drawing has not been prepared to the indicated scale. Instructions: Complete the table below by neatly answering the questions which refer to the accompanying drawing, the title block ~ hanical content. DETAILG DETAILS and mechanical conteni [30] 1 | What is the title of the drawing? 1 2 | Who prepared the drawing? 1 3 | What material is used to manufacture the needle point? 1 ANSWER 16: 4 | How many parts make up the compass assembly? 1 coed panne nee the 5 | What is VIEW 2 called? 1 What would be an advantage of a compass with an adjustment 6 1 shaft and wheel? 7 | Whatis the purpose of part 4? 1 g_ | With reference to the dimension at A, what will the diameter of the 1 circle be at the current setting? {9 | Measure the angle at B. 1 10 | Determine the complete dimensions at: C D: 2 11 | Name the type of section at E. 1 12 | Name the finish on the adjustment wheel at F 1 43 | What is the purpose of the finish on the adjustment wheel at F? 1 44 | With reference to the tolerance, determine the minimum dimension ; at H? FIELD/SITE WELD With reference to the welding symbol below, match the letter on the | TAIL 45 | welding symbol with the label in the column to the right of this WELD LENGTH 5 question. WELD PITCH WELD PROCESS 46 | With reference to DETAIL G, draw, in neat freehand and in the space provided on the drawing sheet | (ANSWER 16), the SANS 10117 conventional representation of the assembled meshing gears 17 | nthe space below (ANSWER 17), draw, in neat freehand, the symbol for the projection system 7 PARTS LIST APPROVED: SAMUEL DATE: 2018-06-07 used. PART QUANTITY MATERIAL CHECKED: JONAS DATE: 2018-06-01 TOTAL | 30 7 orp 1 PLASTIC DRAWN. WESSLY DATE. 20180330 QUESTION 15: Welding symbol ANSWER 17: Projection symbol 2 | LEGS 2 PEWTER DRAWING PROGRAM: AUTOCAD 2018 SCALE 1:1 M3 ADJUSTMENT SHAFT 3 ‘AND WHEEL 1 STEEL + PLASTIC _ _ 123 Pencil Road 4 | Quick RELEASE 2 PLASTIC BEST ‘Johannesburg > een 3 — STATIONERY _ wwrbeststationery com 6 | STUD + LOCK WHEEL 3 STEEL + PLASTIC EXAMINATION NUMBER: 7 | M2 LOCK SOREW 4 TOOL STEEL TITLE ss a ae ION SON Copyright reserved Please tum over

Engineering Graphics and Design/P2 Downloaded fram hlayiso.com sca QUESTION 2: LOCI NOTE: Answer QUESTIONS 2.1 and 2.2. 2.1 MECHANISM Given: * Asschematic drawing of a mechanism consisting of crank AB, connecting rod BC, connecting rod CD and crank DE. * The position of centre point A on the drawing sheet Specifications: © The positions of A and E are fixed * Connecting rod BC is pin-jointed to crank AB at B * Connecting rod CD is pin-jointed to connecting rod BC at C * Connecting rod CD is pin-jointed to crank DE at D Motion: During the motion, both crank AB and crank DE rotate in a clockwise direction and at the same velocity. Instructions: * Draw, to scale 1 : 1, the given schematic drawing of the mechanism. * Trace the locus generated by point C for ONE complete rotation of the two cranks Show ALL construction. 7 9) ASSESSMENT CRITERIA 2.1 1 | GIVEN 7 2 | CONSTRUCTION 5 3 | POINTS + CURVE 7 PENALTIES TOTAL| 19 Copyright reserved QUESTION 2.2; CHUTE (HELIX) Given: * The top view and incomplete front view showing the starting position, mid-position and end position of a chute * The centre lines for the top view and the front view of the chute Specifications: Pitch: 60 mm Turns: ONE Rotation: LEFT HAND Instructions: Using the given centre lines, draw, to scale 1 : 1, the given top view and complete front view of the chute. «NO hidden detail is required. * Show ALL construction [19] ASSESSMENT CRITERIA 2.2 41 | GIVEN ToP view 13 2 | CONSTRUCTION 5 3 | OUTER HELIX 9 4 |INNERHELIX+sHarT | 34 PENALTIES. 2.2 SUBTOTAL 19 2.4 SUBTOTAL 19 TOTAL | 38 EXAMINATION NUMBER EXAMINATION NUMBER [3 Please tum over

Engineering Graphics and Design/P2 Downloaded fram hlayiso.com sca Copyright reserved QUESTION 3: ISOMETRIC DRAWING Given: © The front view, top view and left view of a punch guide with a regular pentagonal hole © The position of point P on the drawing sheet Instructions: Using scale 1 : 1, convert the orthographic views of the punch guide 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 [38] 55 240. | ASSESSMENT CRITERIA 41_| AUX. VIEW + PLACING 3 ISOMETRIC + NONISO™ 2 | uines if 3 | ISOMETRIC CIRCLES + 7 CIRCLE CONSTR’ 4 | SECTIONED SURFACES | 44 + HATCHING PENALTIES. TOTAL | 38 EXAMINATION NUMBER EXAMINATION NUMBER [4 Please tum over

Engineering Graphics and Design/P2 Downloaded fram hlayiso.com DBE/2019 RETAINING RING [7] 18, 43 19, M64 x3 Li CN \ 53. 24. 17, mitep Ie " || PLUG [4] TE |} p-22 16 Rio __| | Rs_| | VALVE BODY (F) [5] 104 38 41 {32 2) R\ @42 [\ wy \@20 JET [3] rm & PIN [8] EXPLODED ISOMETRIC DRAWING Copyright reserved INLET [1] SEAL RING [2] FLOAT TRIGGER [9] AF 76 QUESTION 4: MECHANICAL ASSEMBLY Given: * The exploded isometric drawing of the parts of a float control assembly, showing the position of each part relative to all the others * Orthographic views of each of the parts of the float control 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 float control assembly: 4.1. A sectional front view on cutting plane AA, as seen from the direction of the arrow shown on the exploded isometric drawing. The cutting plane is shown on the right view of the inlet (part 1). 4.2 The right view 4.3 The bottom view NOTE: © Planning is essential ALL drawings must comply with the guidelines as contained in the SANS 10111 ©The convention of symmetry may NOT be applied Show THREE faces of the inlet in the bottom view. © The plug (part 4) must be placed against the jet (part 3). * Add cutting plane A-A in the right view. © NO hidden detail is required [94] PARTS LIST PART QUANTITY MATERIAL. 4 (| INLET 1 PLASTIC 2 | SEAL RING 1 RUBBER 3 | JET 1 LTA PLASTIC 4 [Pus 1 PLASTIC 5 | VALVE BODY (F) 1 PLASTIC 6 | VALVE BODY (R) 1 PLASTIC RETAINING 7 [RETA 1 PLASTIC 8 | PIN 1 PLASTIC @ | FLOAT TRIGGER 1 PLASTIC @ QUARRY STREET WR DELTAPARK 1807 ww.waterproducts.co.za PROJECTS @ 012 543 6879 mime FLOAT CONTROL & [5 Please tum over

Downloaded fram hlayiso.com sca FOR OFFICIAL USE ONLY INCORRECT ORTHOGRAPHIC PROJECTION Engineering Graphics and Design/P2 INCORRECT OVERALL SCALE INCORRECT HATCHING PARTS NOT ASSEMBLED TOTAL PENALTIES (-) ASSESSMENT CRITERIA RIGHT VIEW 4 |imersser 4 2 | vave Bopy 2 ‘SUBTOTAL 6 SECTIONAL FRONT VIEW 1 | mer 143 2 | seacanc 2 3. | ReTaWne rvs 22 4 ver 63 5 ROATTROSER PW |g SUBTOTAL 54 BOTTOM VIEW + Jimer 94 2 |Retawnennes | 94 wet SUBTOTAL 19 GENERAL 1 | centre unes 4 2 | sectionaa 3 3 | assewscy 8 SUBTOTAL 15 TOTAL 94 PENALTIES (-) GRAND TOTAL EXAMINATION NUMBER: EXAMINATION NUMBER [6 Copyright reserved AMOI