Engineering Graphics and Design Grade 12 P2 2013 QP

Downloaded from hlayiso.com INSTRUCTIONS AND INFORMATION 1. The paper consists of FOUR questions. 2. Answer ALL the questions. 3. All drawings must be drawn to scale 1:1, unless otherwise stated. 4. All questions must be answered on the answer sheets provided. 5. All the answer sheets must be re-stapled in numerical sequence and handed in irrespective of whether the question was attempted or not. 6. Careful time management is essential in order to complete all the questions. ISEBE LEMFUNDO LEMPUMA KOLONI 7. Print your name in the block provided on every answer sheet. EASTERN CAPE EDUCATION DEPARTMENT 8. All answers must be drawn accurately and neatly. OOS-KAAP ONDERWYSDEPARTEMENT 9. Any details or dimensions not given must be assumed in good proportion. FOR OFFICIAL USE ONLY MODERATED NATIONAL MARK SENIOR CERTIFICATE 1 2 3 4 TOTAL GRADE 12 2 0 0 FINAL CONVERTED CHECKED BY MARK ENGINEERING GRAPHICS AND DESIGN P2 100 SEPTEMBER 2013 PREPARATORY EXAMINATIONS COMPLETE THE FOLLOWING: NAME NAME MARKS: 200 EXAMINATION CENTRE TIME: 3 hours EXAMINATION CENTRE This question paper consists of 7 pages. Copyright reserved Please turn over 1

Downloaded from hlayiso.com Engineering Graphics and Design/P2 Nsc. EC DBE/September 2013 Loe QUESTION 1: ANALYTICAL (MECHANICAL) Given: Four parts of a sanding disc questions th a title block and a table of Instructions: Complete the table below by neatly answering the questions, which all refer to the accompanying drawings and title block. [24] 40 2x 45° ww} | 19 | oJ gai af gf g as os} sf g \\ROLLERS 18 x @6 25 110 14 | On what date was the drawing drawn? 4 2. | From what material is the disc manufactured? 1 3. | Which drawing method was used to create these drawings? 1 4 | How many changes were made to these drawings? 1 | )— 5. | Whatis the tolerance allowed on the dimensions? 1 |g] s| e| | 6 | What type of sectioning is indicated by A? 1 SRS a 7 | Whatis feature B called? 1 [ | 8 | Whatis the purpose of feature B? 1 9 | Whatis purpose of feature C? 1 10 | Determine the dimension at D. 1 11 | Determine the total length of the shaft. 1 12 | Draw the arrows for the cutting plane located on part 4 and label it A-A 4 41g | In the box below (ANSWER 13), draw, in neat freehand, the symbol for the 4 projection system used. 414 | Inthe box below (ANSWER 14), draw, in neat freehand, the convention for 5 the front view of the bearing. TOTAL 24 ANSWER 13 ANSWER 14 15/05/2013, PETER TYPE OF KEY A ALL DIMENSIONS ARE IN MILLIMETRES. DATE CHANGED BY REVISION DESCRIPTION No UNLESS OTHERWISE DRAWN BY: AKONA DRAWING SET NO. 2 OF 4 MATERIAL: VARIOUS: _ _ SPECIFIED, TOLERANCES | pate; 20/04/2013 | FILE NAME: P.S2-B4 HEAT TREATMENT: NONE PARTS LIST 20,25 CHECKED BY: PIERRE MICRO STEEL SUTTON ROAD PART QUANTITY MATERIAL SYDENHAM ALLUNSPECIFIED RADII | DATE: 26/04/2013 6001 1, SHAFT 1 MILD STEEL CSERE PI Y: MANUFACTURING www.microsteel.coza | 2, BEARING 2 MILD STEEL APPROVED BY: TAN _ EXAMINATION NUMBER DATE: 01/05/2013 3. KEY 1 MILD STEEL DRAWING PROGRAM AUTOCAD 2010 SANDING DISC SCALE 1 2 4, DISC 1 CAST IRON EXAMINATION NUMBER [2 Copyright reserved Please tum over

Downloaded from hlayiso.com Engineering Graphics and Design/P2 Nsc. EC DBE/September 2013 Loe QUESTION 2.1: LOCI (MEGANISM) Given: © Aand O are fixed points and AB and BC are two links which pivot at B * Point D is attached to a crank pin which moves on the pitch circle as indicated Instructions: © Copy, to scale 1:1, the given view. * Construct the locus of B and C for one complete revolution of the crank pin. Note: * Study the given diagrams carefully before you start drawing. © Show ALL necessary constructions. [24] ASSESSMENT CRITERIA 1. COPY 3 2. CONSTRUCTION 4 3. POINTS "1 4. CURVE 6 TOTAL | 24 EXAMINATION NUMBER EXAMINATION NUMBER [3 Copyright reserved Please tum over

Downloaded from hlayiso.com Engineering Graphics and Design/P2 Nsc. EC DBE/September 2013 DISPLACEMENT DIAGRAM QUESTION 2.2: CAMS Given: A cam displacement diagram of which the first 240° moves at constant velocity and the last 120° moves at a simple harmonic motion Instructions: Using the given cam displacement diagram, determine the cam profile of a wedge shaped follower. The cam rotates in a clockwise direction. Complete the cam profile by using the following specifications: © Minimum radius R20 * Camshaft diameter 20 Notes: * Show all the necessary constructions. * Show the direction of the cam rotation. © Show the camshaft. * Name the horizontal and vertical axes of the displacement diagram, [22] o 60° 30° 120° 180° 240° 280° 320° 360° 90° 150° 210° 260° 300° 340° ASSESSMENT CRITERIA 1. CONSTR. & DIRECTION | 4 2. POINTS 7 3. CURVE 6 4. SHAFT, MINRADIUS & | ARROW 5. LABELS 2 TOTAL | 22 EXAMINATION NUMBER EXAMINATION NUMBER 4 Copyright reserved Please tum over

Downloaded from hlayiso.com Engineering Graphics and Design/P2 Nsc. EC DBE/September 2013 Loe QUESTION 3: ISOMETRIC DRAWING Given: ¢ The front view and left view of a channel jig * The position of point B on the drawing sheet Convert the orthographic views of the channel jig into a scale 1 : 1 isometric drawing. * Make corner B the lowest point of the drawing. * Show ALL necessary circle and other construction. . red [33] 40 2] +> —_--22- fy] s/ [____ 4 3 4 oe mts | I ! y | -4 — 8| LS} 20_|_ 40 __|_20_ |B B\__35 80 70 125 ASSESSMENT CRITERIA 1, AUX. VIEW+PLACING | 3 2. ISOMETRIC LINES 143 3, NON-ISOMETRIC LINES | 7 4, ISOMETRIC CIRCLES | 5 5. CIRCLE CONSTRUCTION | 2 6. CENTRE LINES 4 TOTAL | 33 EXAMINATION NUMBER EXAMINATION NUMBER [5 Copyright reserved Please tum over

Engineering Graphics and Design/P2 NSC. EC DBE/September 2013 SECTION BB QUESTION 4: MECHANICAL ASSEMBLY wy \ #10 Given: Vy The exploded isometric drawing of the parts of a pulley \ g on tensioner, showing the position of each part relative to \Re4 a — all the others Lo Ee] “4 * Orthographic views of each of the parts of the pulley ol S| + tensioner va 7 © The incomplete right view on page 7 | i + i Instructions: g al gl ol Answer this question on page 7. a or oe | = © Draw, to scale 1: 1 and in third-angle orthographic projection, the following views of the assembled parts IN MILLIMETRES, DATE: 2019 ICHECKED BY: 9m ALL UNSPECIFIED RADII ARE R6. DATE: 2c JAPPROVED BY: voz MICRO STEEL MANUFACTURING SUTTON ROAD SYDENHAM 6001 www.microsteel.co.za DRAWING PROGRAM: CAD 2013 DATE: 25) 5/2 TILE SCALE 1:2 PULLEY TENSIONER Og i= — >) C : 8 30 of the pulley tensioner assembly: fe) i — 4.1 A sectional front view, on cutting plane A-A, as Oo | ol |_| seen from the direction of the arrow shown on the 4 e C5. * t+ exploded isometric drawing. The cutting plane is (oe) 6x3 i r | a o16 LC) shown on the right view of the base (part 1). wn im 26 [42] 4.2 Complete the right view. a THe EI : EI * ALL drawings must comply with the guidelines > |_| A contained in the SABS 0111. 80 S [14] Ato NOTE: * Show three sides of the nut in the sectional front view. = 226 * No hidden detail is required. 197] el oe Oo ea “i |lCdE” & {| 8 3 4 - ° c oe) | “TY |} COs 236 50 we _| 50 60 20 O PARTS LIST R54 AY) EXPLODED ISOMETRIC. PART QUANTITY MATERIAL 6 holes 016 Tw onPCD 78 o La 1 CAST IRON f ro) 2. BOLT 1 MILD STEEL — 3. BUSH 1 BRONZE 5. SHAFT 1 MILD STEEL a 8 tt = LI © [6 aush 1 BRONZE —+4+— QD [rene 1 MILD STEEL a 8. SPACER 1 MILD STEEL ++ 10. M16 NUT 1 MILD STEEL | 46. | IDRAWN BY: Jort/ty 50 ALL DIMENSIONS ARE Copyright reserved Please tum over

Downloaded from hlayiso.com Engineering Graphics and Design/P2 Nsc. EC DBE/September 2013 Loe ASSESSMENT CRITERIA SECTIONAL FRONT VIEW 1. BASE 15 2. CIRCLIP Ps 3. BOLT 8 4, BUSH % 5. PULLEY 7 Al 6. SHAFT 7 7. BUSH 1 8. SPACER 2 9. WASHER 4 10, M16 NUT 5 1 7 SUBTOTAL | 65 RIGHT VIEW AA ee 1, BASE 2. CIRCLIP L-+ ae 3. BOLT 5 ’ 4, BUSH 4 ' 5. PULLEY T 7 - - - - an - 6. SHAFT a 7. BUSH C | | ; 8. SPACER a J 9. WASHER 1 a A 10. M16 NUT 4 a ae ae 14, HATCHING 18 SUBTOTAL | 32 TOTAL| 97 Al EXAMINATION NUMBER EXAMINATION NUMBER Copyright reserved