Engineering Graphics and Design Grade 12 P2 2022 QP (Eng)

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. basic education pographi ALL drawings must be prepared using pencil and instruments, unless otherwise WWE. Department: stated. Basic Education . ALL answers must be drawn accurately and neatly. 4 REPUBLIC OF SOUTH AFRICA ALL the questions must be answered on the QUESTION PAPER, as instructed. PENS Noo 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. NATIONAL SENIOR CERTIFICATE FOR OFFICIAL USE ONLY QUESTION | MARKS OBTAINED | 3 | SIGN MODERATED. 3] SIGN RE-MARKING 3| SIGN fo > GRADE 12 1 NX 7 2 3 ( ‘] 4 i ENGINEERING GRAPHICS AND DESIGN P2 | i Ht TOTAL I NOVEMBER 2022 ! \ ~! 2/0/0 2[0/0 2[0|0 MARKS: 100 FINAL CONVERTED MARK CHECKED BY TIME: 3 hours 10 This question paper consists of 6 pages. [ rs | COMPLETE THE FOLLOWING: | | CENTRE NUMBER | | | Barcode label | CENTRE NUMBER | | EXAMINATION NUMBER | | L————~—-—~—~~~~~~--~— 4 EXAMINATION NUMBER Copyright reserved DO NOT FOLD THIS QUESTION PAPER IN HALF lease tum over

Engineering Graphics and Design/P2 DBE/November 2022 Downloaded from hlayiso.com QUESTION 1: ANALYTICAL (MECHANICAL) oe @6 HOLES CSK re AT 90° TO @3 Given: BOTH ENDS: _ Two views of a bracket, and a view of a shaft, a title block and a table of questions. The drawings are not presented to M25 x3 the indicated scale. Hy a Instructions: </BOTHENDS N Complete the tate below by neatly answering the questions, which refer to the accompanying drawings, the tile Y block and mechanical content. [30] #5 18. o22 a 4 QUESTIONS ANSWERS _ g 25 g el Nw 1] Who checked the drawing? 1 — 2. | How many revisions have been made? 1 t a iy | 3. | From what material must the shaft be manufactured? 1 ~ ia 4, [How many hales are there in the bracket? 1 t + F 4x01 HOLES Laz,| | 5 | What type of sections are S-S and T-T of the shaft? 1 6x3 / KEYWAY 2 50 ons 6 |How many screw threads must be cut on the shaft? 1 VIEW 2 a 7_ |IFVIEW 2 of the bracket is the front view, what would VIEW 4 1 4 be called? O \ 8 | What does the abbreviation AF stand for? 1 40 ea secHoNss —g s 8 9 | What is the abbreviation for countersunk? 1 it 10 | Determine the complete dimensions at: A Cc 3 54 I i 41 | What is the height of the spot face on the bracket? 1 it 3 i 3x028 5 5 12 | What is the depth of the keyway on the shaft? 1 a fiht r UNDERCUT 5 Hol 13 |If scale 1 : 1 was used, what would the dimension at D read? 1 al fii M34 x3, 5 tt Ll LH With reference to the orthographic system used, on which u AF 26. 14 | side of the truncated cone of the projection symbal would the 1 e two cirdes be drawn? VIEW 1 " ft 15 | Specify the size and depth for the left-hand thread. 1 ©. 46 | How many surfaces on the bracket must be machined? 1 BRACKET o28 Ei d SCALE 1:3 SECON tT With reference to the tolerance, determine the minimum T T 17 | diameter of the hale at E. 7 0,2 1 4 3 4g | With reference to the machining symbol in the tile Hock, 0,8 1 3 CHANGE TOLERANCE TO + 0,02 09/12/2021 J.STEYN, T a what do the following component specifications refer to? GRINDING 1 2 | ADD SECTIONS ON SHAFT 8/12/2021 4LSTEYN Cc 7 lyz2 x2] 1 __| CHANGE INDICATED DIMENSIONS 06/12/2021 tSTEYN SHAFT 4g |! the space below (ANSWER 19), complete, in neat freehand, the SANS 10111 conventional 3 REVISION DESCRIPTION DATE DRAWN SCALE 1:3 representation for the given hdles on a LINEAR PITCH. FILENAME: MS 41-2022 | MATERIAL: TOLERANCE: x02 In the space below (ANSWER 20), complete, in neat freehand, the SANS 10111 conventional © BRACKET: WROUGHTIRON — | ALLUNSPEGIFIED RADII | Wai Ess OTHERWISE 0,8 SENOS | 20 | representation for an INTERRUPTED VIEW on a square bar. 3 DRAWING No. 13 © SHAFT: MILD STEEL STATED 0,2VC TOTAL| 30 ALL DIMENSIONS ARE IN MILLIMETRES. COMMISSIONED BY: DRAWING RACKIT MANUFACTURERS | PROGRAMME: AUTOCAD 2022 | Guanrury: g000 SCALE1.3 QUESTION 19: ANSWER 20: MILLER DESIGN AND DETAILING DRAWN BY: J. BONGANI DATE: 2021/12/04 OOO 41 ANFIELD PLACE www.millerd&d.co.Za LIVERPOOL 012 567 8910 CHECKED: S. SMITH DATE: 2021/12/12 x600 ‘APPROVED BY: dt BHIKA DATE: 2021/12/17 Ooo San ONIN RISER TITLE BRACKET AND SHAFT DETAILED CONVENTION EXACTS [2 Copyright reserved Please tum over

Engineering Graphics and Design/P2 Downloaded f DBE/November 2022 rom hlayiso.com ASSESSMENT CRITERIA 2.1 1 |GIVEN + LABELS + CL 6 2 |CONSTRUCTION 5 3 |LOCI OF D AND E 14 PENALTIES ¢) SUBTOTAL 25 QUESTION 2: LOCI NOTE: Answer QUESTIONS 2.1 and 2.2. 2.1 MECHANISM Given: * A schematic drawing of a mechanism consisting of crank OA, sliding rod DB, horizontal groove GH, swivel guide F and rod CE in its vertical position © The position of centre point O on the drawing sheet Specifications: © The positions of centre point O, swivel guide F and horizontal groove GH are fixed. * Rod DB = 165. * Sliding rod DB is pin-jointed to crank OA at A. Rod CE passes through swivel guide F, and is pin-jointed to sliding rod DB at C. Motion: As crank OA rotates, point B of sliding rod DB reciprocates along groove GH and rod CE slides through swivel guide F. Instructions: © Draw, to scale 1:1, the given schematic drawing of the mechanism. © Trace the loci generated by point D and by point E for ONE complete rotation of crank OA. « Show ALL construction. [25] ASSESSMENT CRITERIA 2.2 41 |GRAPH CONSTRUCTION 2. |POINTS + CURVE 3 |LABELS PENALTIES ¢) SUBTOTAL 2,2 12 2.2: CAM Given: © The position of comer P on the drawing sheet Motion: Acam imparts the following motionto a follower: eltis at rest for the first 60°. elt rises 80 mm with uniform acceleration and retardation over the next 150°. It returns to its original position with uniform motion over the rest of the rotation. Instructions: «From corner P, draw, to a rotational scale of 10 mm = 30° and a displacement scale of 1: 1, the complete displacement graph for the required motion. * Label the displacement graph and indude the rotational scale. Show ALL construction. [12] SUBTOTAL 2.1 25 EXAMINATION NUMBER TOTAL 37 EXAMINATION NUMBER, [3 Copyright reserved Please tum over

Engineering Graphics and Design/P2 DBE/November 2022 Downloaded from hlayiso.com 80 QUESTION 3: ISOMETRIC DRAWING Given: © The front view, top view and left view of a tool * The position of point A on the drawing sheet Instructions: Using scale 1 : 1, convert the orthographic views of the tool into an isometric drawing. * Make A the starting and lowest point of the drawing. * Show ALL construction. * NO hidden detail is required. [40] 40 40 54 38 20, 26 45 30 120 ASSESSMENT CRITERIA PLACING + AUX. VIEW 2 BODY 20 1 2 3 [HANDLE 93 4 |CIRCLES + CONSTR. + CL 8d PENALTIES ¢) TOTAL] 40 EXAMINATION NUMBER EXAMINATION NUMBER [4 Copyright reserved Please tum over

Engineering Graphics and Design/P2 Downloaded from hl DBE/November 2022 130 68 930 230 220 \ f 144 1 BASE [ 14 62 929 | | G IH Mig t M16 WASHER [4] M16 NUT [5] CRANK [6] COMPRESSION SPRING [9] EXPLODED ISOMETRIC DRAWING 22, R50 216 Fl FLY WHEEL [11] yiso.com | QUESTION 4: MECHANICAL ASSEMBLY Given: © The exploded isometric drawing of the parts of a wobble engine assembly, showing the position of each part relative to all the others * Orthographic views of each of the parts of the wobble engine 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 wobble engine assembly: 4.1. ONLY the left half of the front view, by applying the convention of symmetry. 4.2 A sectional left 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 front view of the base (part 1). NOTE: © Planning is essential. The drawing must comply with the SANS 10111 guidelines. The piston (part 7) must be drawn in the highest position. Show THREE faces of the M16 nut (part 5) on the sectional view. The compression spring (part 9) must be drawn as a conventional representation, at the full extension of 20 mm. * NO hidden detail is required. [93] PARTS LIST PARTS QUANTITY MATERIAL 1 Base 1 CASTIRON 2 | SHAFT 1 MILD STEEL 3 | KEY 1 KEY STEEL 4 |M16 WASHER 1 MILD STEEL 5 |M16 NUT 1 MILD STEEL 6 | CRANK 1 CASTIRON 7 =| PISTON 1 MILD STEEL 8 | CYLINDER 1 CASTIRON, 9 | COMPRESSION SPRING 1 SPRING STEEL 10 | TENSION SCREW 1 MILD STEEL 41:«‘| FLY WHEEL 1 CASTIRON 7 WATT STREET INDUSTRIA www.steamp.co.za ® 012 345 6789 WOBBLE ENGINE ASSEMBLY ©Og STEAM PUNK ENGINEERING CC ALL DIMENSIONS ARE IN MILLIMETRES, Copyright reserved Please tum over

Engineering Graphics and Design/P2 DBE/November 2022 Downloaded from hlayiso.com FOR OFFICIAL USE ONLY INCORRECT ORTHOGRAPHIC PROJECTION INCORRECT OVERALL SCALE INCORRECT HATCHING PARTS NOT ASSEMBLED TOTAL PENALTIES () ASSESSMENT CRITERIA FRONT VIEW Posse | opraien | aca] moversted 1 | ease 53 TENSION 1 SCREW FLY WHEEL 4 INEICATIONOF | SYMMETRY 2 3 4 |nut+waster | 49 5 s UBTOTAL | 144 SECTIONAL LEFT VIEW 1 | ease 133 2 | ovunoer 10 3. | Piston 54 4 | Screw" 8 5 | sprinc 13 6 | cranc 54 7 |wasnes aur | 152 B | revwnee 7 SUBTOTAL | 66} GENERAL 1 |oenteeunes [2 2 | assewavy 10 SUBTOTAL | 12 TOTAL| 93 PENALTIES (=) GRAND TOTAL EXAMINATION NUMBER EXAMINATION NUMBER [6 Copyright reserved