Engineering Graphics and Design Grade 12 P2 NSC June 2024 QP

Downloaded from hlayiso.com O Confidential basic education Department: Basic Education REPUBLIC OF SOUTH AFRICA SENIOR CERTIFICATE EXAMINATIONS/ NATIONAL SENIOR CERTIFICATE EXAMINATIONS ENGINEERING GRAPHICS AND DESIGN P2 MAY/JUNE 2024 MARKS: 100 TIME: 3 hours ENGINEERING GRAPHICS & DESIGN P2 This question paper consists of 6 pages. 107726 rT 4 | GRDS-—P:2._ Date : 10/08/2024 | 8140285 4 MS :PartTime: 034123728-0 | X05 | uncommon = 7 8924140285035 7 SP NOW FY 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 neatty. 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. Time management is essential in order to complete all the questions. Print your examination number in the block provided on every page. 10. Any details or dimensions not given must be assumed in good proportion. FOR OFFICIAL USE ONLY QUESTION | MARKS OBTAINED | }] SIGN | MODERATED | 3] SIGN | RE-MARKING |4| SIGN TOTAL 2/0|0 2/0|0 2|0;0 FINAL CONVERTED MARK CHECKED BY | 700 COMPLETE THE FOLLOWING: CENTRE NUMBER By ke CENTRE NUMBER NUMBER EXAMINATION NUMBER _ Copyright reserved DO NOT FOLD THE QUESTION PAPER IN HALF. Please tum over Be

Downloaded from hlayiso.com +. Engineering Graphics and Design/P2 SCINSC Confidential OBE May/June 2024 4x @16 HOLE CBORE 32 x2 DEEP 427, 10, i" 24. 4xMI14 x15 AUXILIARY VIEW QUESTION 1: ANALYTICAL (MECHANICAL) Given: The front view, top view, right view and an auxiliary view of a corner bracket, a title block and a table of questions. The drawing is not presented to the indicated scale. Instructions: Complete the table below by neatly answering the questions, which refer to the accompanying drawings, title block and mechanical content. [30] QUESTIONS ANSWERS Who approved the drawing? STPHO What is the web address of the draughting firm? www. mee brew 60.208 What is the file name of the drawing? TIVWEI-b How many corner brackets must be manufactured? 15990 What drawing method has been used to prepare the drawing? A olalalefro|o How deep is the counter bore of the 4 x 16 holes? ~ Ifa scale of 1: 1 was used, how would the dimension at A read? Rare K3 FRSU © Which VIEW is the front view of the drawing? yew \ How many threaded holes are on the bracket? i) 10 CURVED CORNER 11 Name the feature at B. Determine the complete dimensions at: C: ( } DUK 12 Measure the angle at H. 13 Determine the complete dimension at J. vlalala}a)= 44 With reference to the tolerance, determine the maximum and minimum dimensions for K. 70 VIEW 3 15 How many surfaces on the corner bracket must be machined? 16 Match the surfaces labelled Q and R on VIEW 3 with the corresponding labelled surfaces on VIEW 2. RS 17 Which view shows the true shape of the surface at W? Vitw 1 18 What is indicated by C on the machining symbol at 1 in the title block? LENGTH - 19. What does the machining symbol at 2 in the title panel indicate? ANGLE QF TTNCULANATEN 4 In the space below (ANSWER 20), complete, in neat freehand, the side view of each of the three SANS 1011 conventions of the interrupted views shown. TOTAL | 30 COMMISSIONED BY: BRACKETS FOR AFRICA HANGER STREET CAPE TOWN DRAWING PROGRAMME: AUTOCAD 2023 ALL DIMENSIONS ARE IN MILLIMETRES. MILLING QUANTITY: 1500 FILE NAME: JUVWBJ-6 DRAWING No. 013 SCALE 1:3 DRAWN BY: VERNON DATE: 2023-05-19 MECHANICAL DRAUGHTERS 63 HUBBLE ROAD CAPE TOWN 7700 www.mecdraw.co.za 021 291 0910 CHECKED BY: BARRY —_| DATE: 2023-05-27 APPROVED: SIPHO DATE: 2023-05-31 TITLE: CORNER BRACKET ALL UNSPECIFIED RADIt ARE 2,5 mm. on7 TOLERANCE : 70.02 ANSWER 20 (Best Bal Gye eal EXAMINATION NUMBER NEE RCSL EXAMINATION NUMBER: [2 Copyright reserved Please tum over

Downloaded from hlayiso.com ~. Engineering Graphics and Design/P2 SC/NSC Confidential DBE May/June 2024 60° >; QUESTION 2: LOCI (CAM) Given: © The detail of a camshaft and a wedge-shaped follower at the minimum distance from the camshaft centre * The position of centre point P on the drawing sheet Specifications: » The wedge-shaped foltower reciprocates along a 60° line that passes through the centre of the camshaft. ¢ The minimum distance from the follower to the centre of the camshaft = 20 mm * Rotation = anti-clockwise Motion: The cam imparts the following motion to the wedge- shaped follower: elt rises 40 mm over the first 60° with Uniform motion. * There is a dwell period for the next 30°. * It rises to its maximum displacement of 80 mm over the next 90° with uniform motion. It descends 40 mm over the next 90° with simple harmonic motion. eltretums original position with uniform acceleration and retardation over the remainder of the rotation. Instructions: Using centre point P on the drawing sheet, draw, to scale 1: 1, the camshaft and wedge-shaped follower in the given position. ¢ Draw to a rotational scale of 30° = 8 mm and a displacement scale of 1: 1, the complete displacement graph for the required motion, Using the given position of the follower as 0°, project and draw the cam profile from the displacement graph. * Indicate the direction of rotation on the cam profile with an arrow. * Indicate the rotational scale of the graph. ¢ Show ALL construction and projection. 137] ASSESSMENT CRITERIA (GIVEN + MINIMUM DISTANCE + CL IGRAPH CONSTRUCTION PLOTTING GRAPH + GRAPH CURVES: CAM CONSTRUCTION alolpps alojri|a 5. |PLOTTING + CAMPROFILE | 11 PENALTIES (-) P 216 WEDGE-SHAPED FOLLOWER : i ‘AND CAMSHAFT DETAIL F947 GTi AK S955 TOTAL] 37 EXAMINATION NUMBER EXAMINATION NUMBER [3 Copyright reserved Please tum over

Downloaded from hlayiso.com *. Engineering Graphics and Design/P2 SGINSC Confidential DBE May/June 2024 QUESTION 3: ISOMETRIC DRAWING. Given: The front view, top view and right view of a casting # The position of point A on the drawing sheet Instructions: Using scale of the castin, 4, convert the orthographic views an isometric drawing. ° Use A as the starting and lowest point of the drawing. » Show ALL construction. * NO hidden detail is required. [40] 18, 139 ASSESSMENT CRITERIA PLACING + AUX. VIEW 2 FRONT PORTION 124 elr| a UPPER PORTION 183 4 ARCS + CONSTR. + CL if PENALTIES () TOTAL 40 EXAMINATION NUMBER MILT Te Ve GSo36 EXAMINATION NUMBER. {4 Copyright reserved Please tum over

Downloaded from hlayiso.com ~ Engineering Graphics and Design/P2 SCINSC Confidential DBE Mayhlune 2024 28 | | 13, 2 10 oc re LOCK SCREW [4] 16, = REO a4 R35 H 1 it M10 T _ Rag 1 20 47. CLAMP [2} 47 36, 40 © 35 120 BASE [1] 228 8 o10 928 SCREW CAP [6] ADJUSTING SCREW [7] | sn | | +45 EY M10 BOLT [5] QUESTION 4: MECHANICAL ASSEMBLY Given: * Orthographic views of each part of the fixed lathe steady assembly, * The exploded isometric drawing of the parts of a fixed lathe steady assembly, showing the position of each part relative to all the others 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 fixed lathe steady assembly: 4.1. The front view as seen from the direction of the arrow on the exploded isometric drawing. 4.2 Asectional left view on cutting plane A-A. The cutting plane is shown on the front view of the base {part 1). NOTE: « Planning is essential. The convention of symmetry may NOT be applied. The drawing must comply with the SANS 101117 guidelines. © Draw the guide (part 6), adjusting screw (part 7), screw cap (part 8) and the ring (part 9) only in the top hole marked B. « Draw only the top lock screw (part 4) in position, as shown in the exploded isometric drawing. * Show THREE faces of the M10 bolt (part 5) in the front view. © NO hidden detail is required. Add cutting plane A-A. [93] PARTS LIST QUANTITY PARTS MATERIAL, CAST IRON CLAMP CAST IRON STEEL STEEL PIN LOCK SCREW M10 BOLT STEEL GUIDE ADJUSTING SCREW SCREW CAP 1 BRASS 1 STEEL BRASS ALUMINIUM 7 XANDER STREET DE JAGER www.guidance.co.za 012 345 6789 FIXED STEADY ASSEMBLY ALL DIMENSIONS ARE IN MILLIMETRES. © 4 iG elo! ~loalafalolrn|a RING 1 GUIDANCE ENGINEERING CC. Copyright reserved Please tum over

Downloaded from hlayiso.com * Engineering Graphics and Design/P2 SCANSC Confidential OBE May/June 2024 FOR OFFICIAL USE ONLY INCORRECT ORTHOGRAPHIC PROJECTION INCORRECT OVERALL SCALE {INCORRECT HATCHING PARTS NOT ASSEMBLED TOTAL PENALTIES (-) ASSESSMENT CRITERIA FRONT VIEW rome | ommmes | oor | worms 1 | ease 15 2 | cane +e 5 3 jane | 8 4 | cue 1 5 | vock screw 24 6 | mosour 6 [eee a SUBTOTAL | 334 SECTIONAL LEFT VIEW 4 | ease 12 2 | cane 7 3 | cue 84 4 eure | 6d 5 | Awe 3 6 |rockscrew | 4 7 | scRewcap 3 SUBTOTAL | 44} GENERAL 4 | centre unes 4 2 | assenery 8 dg] pome en 3 SUBTOTAL | 15 TOTAL| 93 PENALTIES (-) GRAND TOTAL EXAMINATION NUMBER: CAL GIG SLR SUE EXAMINATION NUMBER [6 Copyright reserved