Engineering Graphics and Design Grade 12 P2 2012 QP

Downloaded from hlayiso.com INSTRUKSIES EN INLIGTING 1. Hierdie vraestel bestaan uit VIER vrae. 2. Beantwoord AL die vrae. 3. ALLE tekene is in derdehoekse ortografiese projeksie, tensy anders aangedui. 4. ALLE tekene moet voltooi word met instrumente, tensy anders aangedui. 5. ALLE antwoorde moet akkuraat en netjies geteken word. GRAAD 12 6. AL die vrae moet, soos voorgeskryf, op die VRAESTEL beantwoord word. 7. AL die bladsye moet weer in nommervolgorde vasgekram word, ongeag of die vraag beantwoord is. 8. Tydsbeplanning is noodsaaklik om al die vrae te voltooi. 9. Drukskryf jou eksamennommer in die blokkie voorsien op elke bladsy. 10. Enige besonderhede of afmetings wat nie gegee is nie, moet in goeie verhouding veronderstel word. NASIONALE SENIOR SERTIFIKAAT SLEGS VIR AMPTELIKE GEBRUIK VRAAG PUNTE BEHAAL ½ TEKEN GEMODEREER ½ TEKEN GRAAD 12 1 2 3 INGENIEURSGRAFIKA EN -ONTWERP V2 4 FEBRUARIE/MAART 2012 TOTAAL 2 0 0 2 0 0 PUNTE: 100 FINALE VERWERKTE PUNT NAGESIEN DEUR TYD: 3 uur ________ 100 VOLTOOI DIE VOLGENDE: Hierdie vraestel bestaan uit 6 bladsye. SENTRUMNOMMER SENTRUMNOMMER EKSAMENNOMMER EKSAMENNOMMER !GAUTENG! Kopiereg voorbehou Blaai om asseblief

Ingenieursgrafika en -ontwerp/V2 Downloaded from hlayiso.com DBE/Feb-Mrt. 2012 Gegee: VRAAG 1: ANALITIES (MEGANIES) 'n Seleksie van aansigte van 'n balustrade-steunstuk, 'n sweissimbool, 'n titel- blok en 'n tabel met vrae. Die tekene is nie volgens die aangetoonde skaal TEKENING NR, 7 AFWERKING; CHROOMPLATEER ALLE AFMETINGS IS IN MILLIMETER, oe hes ton S 1 1e-—- yt Instruksies: SWEISBESONDERHEDE VIR AL DIE HORISONTALE STAWE AGATE @ 10 Voltooi die tabel hieronder deur die vrae, wat almal na die bygaande tekene DETAIL'R’ AANSIG 1 SWEISSIMBOOL en titelblok verwys, netjies te beantwoord. -—(D) a VRAE ANTWOORDE 37 + 7 - —T - - + 8 PYLPUNTLYN 3 | q —|--*5 STERT + = / « VERWYSINGSLYN 1895 1895 an Met verwysing na die sweissimbool, verbind die nommer op die tekening i= = = — 1 1 | met die korrekte element in die kolom regs van hierdie vraag SWEISPROSES 7 i KONKAWE AFWERKING SWEIS RONDOM SIEN DETAIL 'R' & \ 8 GROOTTE VAN SWEISLAS — = = — C 4 7 2. | Wanneer is die tekening goedgekeur? 1 3 . 3. | Watis die vervaardigingsmaatskappy se web-adres? 1 ‘ , 8 4 | Watter afwerking word vir die balustrade vereis? 1 {—= = = =—} 5 Ss T 5 | Watis die seraam? 1 6 | Watis die dikte van die plaat wat op die steunstuk gebruik word? 1 aS 7 |Hoeveel steunstukke moet vervaardig word? 1 amir “ 8 | Wat sal aansig 1 genoem word? 1 tT J an 9 | Wat sal aansig 3 genoem word? 4 AANSIG 3 AANSIG 2 10 | Watter grootte bout word benodig om die steunstuk te bevestig? 1 11 | Bepaal die afmetings: A B c 3 12 | Wat is die senter-tot-senterafstand tussen twee steunstukke? 1 13 | Hoeveel oppperviakke moet op elke steunstut gesweis word? 2 14 | Wat word kenmerk D op aansig 2 genoem ? 1 L_| L_| 15 | Wat is die betekenis van die dubbelpyltjie by E? 4 k 2000 sis | 16_ | Indien die tostaatbare toleransie van 'n afmeting + 0,5, bepaal die 2 INSTALLASIEDIAGRAM boonste en onderste toleransie op 'n afmeting van 30 mm. 17 | Indie blok hieronder, teken, in netjiese vryhand, die simbool vir die projeksiesisteem wat gebruik word. 4 LEERNAAM: PM 12-PSC-347 MATERIAAL: 5 mm SAGTESTAALPLAAT TOTAAL 30 BALUSTRADE VIR PIET EN TEKENPROGRAM: AUTOCAD 2008 TEKENAAR: HAROLD 2011/05/15, SEUNS KONTRAKTEURS- WALDOSTRAAT 17 DURBAN ALLE ONGESPESIFISEERDE RADIUSSE |S R3. | NASIENER: SALLY 2011/05/25 PARKLAAN 51 GOEDGEKEUR: GEORGE 2011/06/01 WELDTECH si 4070 SKAAL: 1: 10 TITLE BALUSTRADE-STEUNSTUK Kopiereg voorbehou ANTWOORD 17 SIMBOOL EKSAMENNOMMER EKSAMENNOMMER: [2 Biaai om asseblief

Downloaded from hlayiso.com Ingenieursgrafika en -ontwerpV2 DBE/Feb-Mrt. 2012 os | VRAAG 2: LOKUSSE € ' NOTA: Beantwoord VRAAG 2.1 EN 2.2 2.4 NOK Gegee: * Die besonderhede van 'n rollervormige volger en 'n verplasingsgrafiek wat eenvoudige _harmoniese beweging en eenvormige versnelling en vertraging toon * Die vertikale senterlyn van die nokprofiel Spesifikasies: * Nokas = 014 mm /EENVoUI IGE HARVONIESE BEWEGING VERSNELLING EN VERTRAGING 180" 360° VERPLASINGSGRAFIEK © Minimum afstand vanaf die nokprofiel na die senter van die nokas = 10 mm * Rotasie = kloksgewys SKAAL 8 mm = 30° Instruksies: * Teken, volgens skaal 1: 1, die gegewe volger- besonderhede sodat dit heen en weer op die gegewe senterlyn sal beweeg. * Vanaf die gegewe verplasingsgrafiek, projekteer en teken die nokprofiel. * Toon die senterlyn en die rigting van rotasie op die nokprofiel. * Toon AL die nodige konstruksies. [19] —=18 TT ASSESSERINGSKRITERIA +. VOLGER+MIN.AFSTAND | a + SENTERLYN + NOKAS 2. KONSTRUKSIE 3 +t 3. UITSTIPPING + RIGTING 6 ' B12) 4, KURWE 4 VOLGERBESONDERHEDE SUBTOTAAL 19 Kopiereg voorbehou oO: 2.2 MEGANISME Gegee: ‘n Skematiese diagram van ‘n verbinde krukmeganisme wat bestaan uit twee krukke, AB en CD, wat met 'n stang, DP, wat by D geheg is en deur B gly, verbind is Beweging: Soos wat kruk AB in 'n antikloksgewyse rigting roteer, roteer kruk CD in 'n kloksgewyse rigting teen dieselfde snelheid. Instruksies: *Deur die gegewe diagram te gebruik, bepaal die lokus wat deur punt P gegenereer word vir EEN volledige omwenteling van die meganisme. * Toon AL die nodige konstruksies. [19] ASSESSERINGSKRITERIA 1. KONSTRUKSIES 5 2. LOKUS VAN P 14 SUBTOTAAL 19 TOTAAL 38 EKSAMENNOMMER EKSAMENNOMMER [3 Biaai om asseblief

Ingenieursgrafika en -ontwerpV2 Downloaded from hlayiso.com secre re Kopiereg voorbehou VRAAG 3: ISOMETRIESE TEKENING Gegee: * Die vooraansig, boaansig en linkeraansig van 'n setmaat met 'n reélmatige seshoekige gat * Die posisie van punt A op die tekenvel Instruksies: Deur skaal 1: 1 te gebruik, omskep die ortografiese aansigte van die setmaat in 'n isometriese tekening. * Maak A die laagste punt van die tekening. Toon ALLE nodige konstruksies. © GEEN stensils mag gebruik word nie. * GEEN verborge besonderhede word verlang nie. [39] 85. -22.| ASSESSERINGSKRITERIA 1, HULPAANSIG + PLASING + SIRKEL- 5 KONSTRUKSIE 2, ISO“SIRKELS + 5 SENTERLYNE 3, ISO + NIE-ISO-LYNE 18 4. SESKANT 11 TOTAAL 39 EKSAMENNOMMER EKSAMENNOMMER [4 Biaai om asseblief

Ingenieursgrafika en -ontwerp/V2 Downloaded from hlayiso.com DBE/Feb-Mrt. 2012 pa WaT TF A $b SE Me | 38. PLAAS (P) HIER 169 143, 143, a 50. 6 GATE @6 | | 40 44 | a *& a Ko UITSKUIF- ISOMETRIESE TEKENING STEUNSTUK [6] Kopiereg voorbehou NOTA: TEKEN DIE SKROEF- DRAAD VOLGENS. DIE SABS 0111- KONVENSIE VIR ‘SKROEFDRAAD. Lonas| 32 20 26 2] M12-BOUT [8] o12 22 | ad WASTER [7] 4 PROPPE OS ff Fs KUSSING [1] 4 GATE 23 | 20IEP VRAAG 4: MEGANIESE SAMESTELLING Gegee: * Die uitskuif- isometriese tekening van die onderdele van 'n domkragsamestelling, wat die posisie van elke onderdeel relatief tot al die ander toon * Ortografiese aansigte van domkragsamestelling elke onderdeel van die Instruksies: * Beantwoord hierdie vraag op bladsy 6 * Teken, volgens skaal 1 : 1 en in derdehoekse ortografiese projeksie, die volgende aansigte van die saamgestelde onderdele van die domkragsamestelling: 4.1 'n Deursnee-vooraansig volgens snyvlak A-A, soos gesien vanult die rigting van die pyl wat in die uitskulf- isometriese tekening getoon word. Die snyvlak, wat deur die vertikale senterlyn van die samestelling gaan, word op die boaansig van die as (onderdeel 5) getoon. 4.2. Die boaansig * ALLE tekene moet voldoen aan die riglyne vervat in die SABS 0111 LET WEL: © Soos aangedui, plas punt P op die domkrag by punt P op die steunstuk. * Toon DRIE viakke van die M12-bout en ALLE nodige konstruksies. * GEEN verborge besondethede word verlang nie. Voeg die volgende kenmerke by die tekening: © Die snyviak A-A * Benoem die deursneeaansig SNIT A-A. [93] ONDERDELELYS ONDERDEEL HOEVEELHEID MATERIAAL 1, KUSSING 2 BRONS: 2. DOMKRAGARM 1 GIETYSTER 3. PEN 1 SAGTE STAAL 4, DOMKRAG 1 GIETYSTER: 5.AS 1 SAGTE STAAL 6. STEUNSTUK 1 SAGTE STAAL 7. WASTER 1 SAGTE STAAL 8.M12-BOUT 1 SAGTE STAAL LANGSTRAAT 17 MECHTECH wi KIMBERLEY 8300 www.mtech.co.za INGENIEURSWERKE ww 083 648 7620 DOMKRAGSAMESTELLING ALLE AFMETINGS IS IN MILLIMETER. Ae ONGESPESIFISEERDE RADIUSSE ISR Bl Biaai om asseblief

Ingenieursgrafika en -ontwerp/V2 Downloaded from hlayiso.com DBE/Feb-Mrt. 2012 ASSESSERINGSKRITERIA DEURSNEE-VOORAANSIG 1 | ussine 3 2.|oowsracarm | 14 3 | PEN 1 4 | vommras hh 5 | As 143 6 | steunstux 7 7 | waster 1 8 | mi2-s0uT 11 9 | ARSERING 13 SUBTOTAAL 69 BOAANSIG 4 | eure 10 SUBTOTAAL 13 ALGEMEEN 1 | senreRLyne 2 afaae [4 3 | savesreunc} 5 SUBTOTAAL 4 TOTAAL 93 EKSAMENNOMMER EKSAMENNOMMER [6 Kopiereg voorbehou

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. 5. ALL answers must be drawn accurately and neatly. 6. ALL the questions must be answered on the QUESTION PAPER as instructed. GRADE 12 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 1 GRADE 12 2 3 4 ENGINEERING GRAPHICS AND DESIGN P2 TOTAL FEBRUARY/MARCH 2012 2 0 0 2 0 0 FINAL CONVERTED MARK CHECKED BY MARKS: 100 TIME: 3 hours _______ 100 COMPLETE THE FOLLOWING: CENTRE NUMBER This question paper consists of 6 pages. CENTRE NUMBER EXAMINATION NUMBER EXAMINATION NUMBER !GAUTENG! Please turn over Copyright reserved

Engineering Graphics and Design/P2 .com DBE/Feb.-Mar. 2012 ae 7TH Given: indicated scale. QUESTION 1: ANALYTICAL (MECHANICAL) A selection of views of a balustrade bracket, a welding symbol, a title block and a table of questions. The drawings have not been prepared to the Copyright reserved Inn S [ \ Instructions: WELDING DETAIL FOR ALL THE HORIZONTAL BARS A HOLES 010 Ne Complete the table below by neatly answering the questions, which all refer DETAIL'R’ WELDING SYMBOL to the accompanying drawings and the title block. [30] ? QUESTIONS ANSWERS 37 7 - - + 8 ARROW LINE an ° TAIL + / » REFERENCE LINE 1895 1895 48 With reference to the welding symbol, link the number on the drawing i = = — l 1 | with the correct element in the column to the right of this question WELDING PROCESS 7 i CONCAVE FINISH WELD ALL AROUND SEE DETAIL'R’ 8 \ 8 SIZE OF WELD — = = — C J 7 2. | When was the drawing approved? 1 3 . 3. | What is the manufacturing company’s web address? 1 ' , 8 4. | What finish is required for the balustrade? 1 — = = =—4 i 2 5 $ T 5 | Whatis the file name? 1 6 | Whatis the thickness of the plate used on the bracket? 1 FN 7. | How many brackets must be manufactured? 1 7 ? aa | 8 | What would view 1 be called? 1 I Van 9 | What would view 3 be called? 1 VIEW 2 10 | What size bolt is needed to secure the bracket? 1 11 | Determine the dimensions: A B c 3 12. | What is the centre-to-centre distance between two brackets? 1 13. | How many surfaces need to be welded on each bracket? 2 _ _ _ _ _ 14. | What is feature D called on view 2? 1 L_| L_| 15. | What is the meaning of the double arrow at E? 4 2000 a. I ae 1 16 | Ifthe permissible tolerance on a dimension is # 0,6, determine the upper 2 INSTALLATION DIAGRAM and lower tolerance on a dimension of 30 mm. 17 |In the box below, draw, in neat freehand, the symbol for the projection system used, 4 FILE NAME: PM 12-PSC-347 | MATERIAL: 5mm MILD STEEL PLATE TOTAL 30 DRAWING No. 7 FINISH: CHROME PLATED ALL DIMENSIONS ARE IN MILLIMETRES. BALUSTRADE FORPIETAND | DRAWING PROGRAMME: AUTOCAD 2008 | DRAWN BY: HAROLD 2011/05/15 ANSWER 17 SONS CONTRACTORS, 17 WALDO STREET DURBAN ALL UNSPECIFIED RADII ARE R3. CHECKED BY: SALLY 2011/05/25 51 PARK AVENUE APPROVED BY: GEORGE 2011/06/01 WELDTECH 4070 SCALE: 1:10 TO ENGINEERING vramavaltechcoza fT #031 645 7820 = oe bRacKeTs EXAMINATION NUMBER BALUSTRADE BRACKET syMBou EXAMINATION NONBER 2 Please tum over

Engineering Graphics and Design/P2 Downloaded from hlayiso.com —— ACCELERATION AND RETARDATION o° 180" DISPLACEMENT GRAPH SCALE 8 mm = 30° QUESTION 2: LOCI NOTE: Answer QUESTIONS 2.1 AND 2.2 2.1 CAM Given: * The detail of a roller-ended follower and a displacement graph showing simple harmonic motion and uniform acceleration and retardation © The vertical centre line of the cam profile Specifications: * Camshaft = 014 mm * Minimum distance from the cam profile to the centre of the camshaft = 10 mm * Rotation = clockwise Instructions: * Draw, to scale 1 : 1, the given follower detail so that it will reciprocate along the given centre line. * From the given displacement graph, project and draw the cam profile * Show the centre line and the direction of rotation on the cam profile * Show ALL necessary construction. [19] —=18 ASSESSMENT CRITERIA 1 FOLLOWER +MIN.DIST+ |g © CENTRE LINE + CAMSHAFT 2. CONSTRUCTION 3 3. PLOTTING + DIRECTION 6 B12) 4. CURVE 4 FOLLOWER DETAIL SUBTOTAL 19 oO: 2.2 MECHANISM Given: A schematic diagram of a linked crank mechanism consisting of two cranks, AB and CD, joined by a rod, DP, which is fixed at D and slides through B. Motion: As crank AB rotates in an anticlockwise direction, crank CD rotates in a clockwise direction at the same velocity. Instructions: * Using the given diagram, trace the locus generated by point P for ONE complete revolution of the mechanism » Show ALL necessary construction. [19] ASSESSMENT CRITERIA 4. CONSTRUCTION 5 2. LOCUS OF P 14 SUBTOTAL 19 TOTAL 38 EXAMINATION NUMBER EXAMINATION NUMBER [3 Copyright reserved UI Please tum over

Engineering Graphics and Design/P2 Downloaded from hlayiso.com —— be Copyright reserved Inn QUESTION 3: ISOMETRIC DRAWING Given: © The front view, top view and left view of a jig with a regular hexagonal hole * The position of point A on the drawing sheet Instructions: Using scale 1 : 1, convert the orthographic views of the jig into an isometric drawing. « Make A the lowest point of the drawing * Show ALL necessary construction + NO stencils may be used. * NO hidden detail is required. [39] Tm T T i i i ‘i * ea RAS L_J i / ASSESSMENT CRITERIA 1. AUXILIARY VIEW + PLACEMENT + CIRCLE 5 CONSTRUCTION 2, ISOGIRCLES + CENTRE |g LINES 3, ISO + NONASO’ LINES 18 4. HEXAGON 11 TOTAL 39 EXAMINATION NUMBER EXAMINATION NUMBER [4 Please tum over

Downloaded from hlayiso.com — QUESTION 4: MECHANICAL ASSEMBLY Engineering Graphics and Design/P2 pA] tt Tz Given: +t ck © The exploded isometric drawing of the parts of a jack wgyite assembly, showing the position of each part relative to all HS the others ins — © Orthographic views of each of the parts of the jack os e 4 Q d | el assembly FJ f _ 7 — test Instructions: fe IT ara] © Answer this question on page 6. 3 * Draw, to scale 1:1 and in third-angle orthographic 3 ) SHOLES 06 Dean THE SCREW M12 BOLT [8] projection, the following views of the assembled parts of = the jack assembly: PLACE ®) HERE —~|| 4 Hoye TOTHE Sasson 41 A sectional front view on cutting plane A-A, as seen ~ | CONVENTION FOR 12 922 from the direction of the arrow shown on the exploded SCREW THREAD. 4 q isometric drawing. The cutting plane, which passes | \ | through the vertical centre line of the assembly, is glo tl elle 4 shown on the top view of the shaft (part 5). + of 4.2 The top view a | | | WASHER [7] * ALL drawings must comply with the guidelines contained a | | in the SABS 0111. | Holle a wore: * As indicated, place point P on the jack at point P on the a bracket = * Show THREE faces of the M12 bolt and ALL necessary { * 4 PLUGS 23 construction. 2 <== * NO hidden detail is required 48 Add the following features to the drawing: © The cutting plane A-A * Label the sectional view SECTION A-A. [93] BRACKET [6] PIN [3] PAD [1] PARTS LIST PART QUANTITY MATERIAL { 1. PAD 2 BRONZE 2, JACK ARM 1 CAST IRON 3.PIN 1 MILD STEEL 4, JACK 1 CAST IRON 5. SHAFT 1 MILD STEEL 6. BRACKET 1 MILD STEEL 7, WASHER 1 MILD STEEL 8.M12 BOLT 1 MILD STEEL 18] 10 17 LONG STREET a MECHTECH wai iS KIMBERLEY 8300 www.mtech.co.za ENGINEERING @4 ‘® 053 645 7820 JACK [4] JACK ARM [2] JACK ASSEMBLY ALL DIMENSIONS ARE| ALL UNSPECIFIED IN MILLIMETRES RADII ARE R2 I ‘Copyright reserved (MW wn Please tum over

santa Downloaded from hlayiso.com DBE/Feb.-Mar. 2012 ASSESSMENT CRITERIA SECTIONAL FRONT VIEW 1 | pao 3 2 | sack aRM 1 3 [PIN 1 4 | src hh 5 | srr 14} 6 | BRACKET 7 7 | WASHER 1 8 | mizBouT 11 9 | HarcHIe 13 SUBTOTAL 69 TOP VIEW + | ourune 10 SUBTOTAL 13 GENERAL 4 | CENTRE LINES 2 2|stanesmme | 4 3 | assewaty 5 SUBTOTAL 11 TOTAL 93 EXAMINATION NUMBER EXAMINATION NUMBER [6 Copyright reserved