Engineering Graphics and Design Grade 12 P2 2025 QP (Eng)

basic education Department: Basic Education REPUBLIC OF SOUTH AFRICA NATIONAL SENIOR CERTIFICATE if ENGINEERING GRAPHICS AND DESIGN P2 I lL NOVEMBER 2025 a) MARKS: 100 TIME: 3 hours This question paper consists of 6 pages. | | | | | | | Barcode label | | | | | | | Confidential 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. PONS NO FOR OFFICIAL USE ONLY QUESTION | MARKS OBTAINED | } | SIGN MODERATED 3} SIGN RE-MARKING 3] SIGN 1 2 3 4 TOTAL 2/;0/0 2/0/0 2/;0/0 FINAL CONVERTED MARK CHECKED BY 100 COMPLETE THE FOLLOWING: CENTRE NUMBER CENTRE NUMBER EXAMINATION NUMBER Testpa Pers .co.za Testquestions .cO.Za

Engineering Graphics and Design/P2 NSC Confidential DBE/November 2025 QUESTION 1: ANALYTICAL (MECHANICAL) Given: Two views of the assembled parts of a rivet gun assembly, detailed views of the parts of the assembly, a parts list, a title block and a table of questions. The drawings are not presented to the indicated scale. * Instructions: at Complete the table below by neatly answering the questions, which refer to the accompanying drawings, title block [oio| and mechanical content. [30] “ame QUESTIONS ANSWERS 1 | What is the file name? 1 2 | Who checked the drawing? 1 al a 3. | What is the name of the client? 1 ° 4 | What program has been used to prepare the drawing? 1 } 5 | What is the website of the draughting company? 1 — 16 ina 6 | What projection system is indicated by the projection symbol? 1 = rit 7 | How many handles must be manufactured to complete the order? 4 Hy Kee 8 | If VIEW 1s the front view, what will VIEW 2 be called? 1 Lt © 9 | Name the type of section shown at A. 1 t ( = ~ a 10 | Name the type of section shown at B 1 = TOOL HEAD [4] | 11 | What does the abbreviation A/F at C stand for? 1 12 | Whatis the radius of the rounding at D? 1 | 13 | Determine the angle at E. 1 VIEW4 VIEW2 14 | Determine the complete dimensions at: F: G J 4 RIVET GUN ASSEMBLY 4g | With reference to the tolerance, determine the maximum and the | MAXIMUM 1 - minimum size of the dimension at K. MINIMUM: 1 PARTS LIST No] PART Guanti7y | MATERIAL 16 | Calculate the height of a standard M30 nut. 1 ml sopy 7 ALUMINIUM 47 | With reference to the top machining symbol in the title block F (QUESTION 17), what does the symbol indicate? 2. | SPRING 1 MILD STEEL Mé BOLT [5] CONNECTOR [6] { ) ul 3. | PIECE 7 MILD STEEL «| 49 | With reference to the bottom machining symbol in the title block | b: 1 Rm |e (QUESTION 18), what do the letters 'b’ and 'd' indicate? 7 1 4 | TOOL HEAD 1 MILD STEEL 5 |M6 BOLT 2 MILD STEEL > 7 49 | In the space below (ANSWER 19), complete, in neat freehand, FIGURE 19.2 as a sectional view of | 4 FIGURE 19.1 through the hole, with a SPOT FACE added to the hole. 6 | CONNECTOR 1 SPRING STEEL | oe Pall noe 3 MLD STEEL GRP [11] _ AR aS * 90 | I" the space below (ANSWER 20), draw, to approximately the same size in neat freehand, the 5 — Wy wd SANS 10111 conventional representation of the given SPLINED SHAFT. 8 | M6 NUT 2 MILD STEEL WwW aa _ M10 } 9 | LINK 4 MILD STEEL ™ 26 / TOTAL | 30 <> THANDIE > hw STEEL PIN DIE [7] LINK [9] ANSWER 19 ANSWER 20 11 [GRIP 2 PLASTIC FILE NAME: JJ-14213. QUANTITY: 75 RIVET GUNS ALL UNSPECIFIED RADII | +o) cgance: 10.35 QUESTION 17: DRAWING No. RO722 SCALE 1:2 ARE 3 mm. 0.25 COMMISSIONED BY: DRAWING ALL DIMENSIONS ARE IN coumoooecer., — [ERANC, aurocanzoe [fugues eg _ QUESTION 18: pay ! PRO-DRAUGHTSMEN CC. www prodraw.co.za DRAWN: TOBIAS DATE: 03-07-2025 b ! | ! | 65 CHARLES ROAD, INDUSTRIA ‘ae ROA ‘099 050 6167 CHECKED: THOMAS DATE: 23-07-2025 of 7 FIGURE 19.1 FIGURE 19.2 EXAMINATION NUMBER THE RIVET GUN APPROVED: KELLY DATE: 13-08-2025 d EXAMINATION NUMBER [2 Copyright reserved Please turn over

Engineering Graphics and Design/P2 NSC Confidential DBE/November 2025 CAMSHAFT AND FOLLOWER DETAIL, AND MECHANISM DIAGRAM. QUESTION 2: LOCI (CAM WITH A MECHANISM) Given: © The detail of a camshaft and a wedge-shaped follower at the minimum distance from the camshaft centre * Fixed to the given camshaft is a mechanism, consisting of crank OA, connecting rod AB and swivel guide C, shown as a schematic diagram © The position of centre point © on the drawing sheet Specifications of the cam: « The wedge-shaped follower reciprocates along the vertical centre line of the camshaft. « Rotation = clockwise. Motion of the cam: The cam imparts the following motion to the wedge-shaped follower: lt rises 25 mm over the first 75° with uniform motion. It rises a further 26 mm over the next 90° with simple harmonic motion, * There is a dwell period for the next 15°. It returns to its original position with uniform motion over the remainder of the rotation Specifications of the mechanism: * Connecting rod AB is pin-joined to crank OA at A. * The position of swivel guide C is fixed. Motion of the mechanism: As crank OA rotates with the camshaft, connecting rod AB slides through swivel guide C. Instructions: Using centre point O on the drawing sheet, draw, to scale 1: 1, the given camshaft and wedge-shaped follower detail at the minimum position, together with the schematic diagram of the mechanism. Draw, to a rotational scale of 30° = 8 mm and a displacement scale of 1 : 1, the displacement graph for the required motion of the cam. Project and draw the complete cam profile from the displacement graph. * Show the direction of rotation of the cam profile with an arrow. Indicate the rotational scale of the displacement graph Trace the locus generated by point B of the mechanism for ONE complete rotation of the camshaft Show ALL construction and projection. [41] ASSESSMENT CRITERIA: CAM ASSESSMENT CRITERIA: MECHANISM GIVEN + MINIMUM 4 4 1 [oistance + ct a 1 | SIvVEN 32 2 |GRAPH CONSTRUCTION | 33 2_| CONSTRUCTION 3 PLOTTING GRAPH + Y 3. | GRAPH CURVES 6 3 | POINTS + CURVE 7 4 |CAM CONSTRUCTION 4 PENALTIES (-) 5 |PLOTTING + CAMPROFILE | 93 SUBTOTAL 134 PENALTIES (-) TOTAL| 41 SUBTOTAL 274 EXAMINATION NUMBER EXAMINATION NUMBER [3 Copyright reserved Please turn over

Engineering Graphics and Design/P2 NSC Confidential DBE/November 2025 QUESTION 3: ISOMETRIC DRAWING Given: © The front view, top view and right view of a casting © The position of point P on the drawing sheet Instructions: Using scale 1 : 1, convert the orthographic views of the casting into an isometric drawing * Use point P as the starting point of the drawing. * Show ALL construction. NO hidden detail is required [39] 36 25 r 61 25 45 16 | 24 |P ra 20, 32 32 ASSESSMENT CRITERIA 1 |PLACING + AUX. VIEW 2 2. |FRONT PORTION 143 3 |BACK PORTION 144 4 |ciRCLes +consTR +cL| 8 PENALTIES (-) TOTAL| 39 EXAMINATION NUMBER EXAMINATION NUMBER [4 Copyright reserved Please turn over

Engineering Graphics and Design/P2 NSC Confidential DBE/November 2025 Qe 80 vs 54 138 fr PA oo et KEY [6] l 4x2 KEYWAY 232 4} BALL BEARING [7] 38 135 | —3 HOLES M10 EQUISPACED ‘ON 90 PCD. R oy ron yy EXPLODED ISOMETRIC DRAWING SHAFT [5] a2 220, FLANGE COUPLING [2] BUSH [9] 228 \ 920 3 HOLES 210 CSk TO @14 ON 90 PCD COVER [4] a, & a g <| ees = a) Aro That M10 SCREW [3] : (M16 x2 M16 NUT [1] 44 24 | Axe KEYWAY 270 SPUR GEAR [8] JAN EXAMPLE OF A CONVENTIONAL, REPRESENTATION OF A SPUR GEAR QUESTION 4: MECHANICAL ASSEMBLY Given: © The exploded isometric drawing of the parts of a gearbox assembly, showing the position of each part relative to all the others * Orthographic views of each of the parts of the gearbox assembly * An example of a conventional representation of a spur gear 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 gearbox assembly: 4.1. A sectional front 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 right view of the cover (part 4). 4.2 ONLY the left half of the right view, by applying the convention of symmetry NOTE: * Planning is essential. * The drawing must comply with the SANS 10111 guidelines. * Show THREE faces of the M16 nut (part 1) in the sectional front view. © Draw the ball bearing (part 7) and the spur gear (part 8) as conventional representations in the sectional front view. * NO hidden detail is required. [90] PARTS LIST PART QUANTITY MATERIAL 1 | M16 NUT 1 MILD STEEL 2. | FLANGE COUPLING 1 CAST IRON 3 | M10 SCREW 3 MILD STEEL 4 | cover 1 MILD STEEL 5 | SHAFT 1 CAST IRON 6 |key 1 MILD STEEL 7 | BALL BEARING 1 MILD STEEL 8 | SPUR GEAR 4 CAST IRON 9 | BUSH 1 BRASS 10 | HOUSING 4 CAST IRON 21 NORTH STREET whs KLERKSDORP DRAUGHTING www.hjc-draught.co.za 162 431 5690 GEARBOX ALL DIMENSIONS ARE IN MILLIMETRES. © 4 [sl Copyright reserved Please turn over

Engineering Graphics and Design/P2 NSC Confidential DBE/November 2025 FOR OFFICIAL USE ONLY Ce INCORRECT ORTHOGRAPHIC PROJECTION INCORRECT OVERALL SCALE INCORRECT HATCHING PARTS NOT ASSEMBLED TOTAL PENALTIES (-) ASSESSMENT CRITERIA RIGHT VIEW HOUSING + 1 | symmetRY 6 COVER + 2 | screws 4 FLANGE 3 | coupuine 2 M16 NUT + 4 | shart 6 SUBTOTAL 16 SECTIONAL FRONT VIEW 4 | HOUSING 104 2 |cover 43 3 | M10 scREW 7 4 | SPUR GEAR 9 5 | BALL BEARING 23 SHAFT + KEY + 4 6 |eusn 152 FLANGE 7 | couptine 9 8 | M16 NUT 4 SUBTOTAL 62 GENERAL 1 | CENTRE LINES 3 2 | ASSEMBLY 9 SUBTOTAL 12 TOTAL | 90 PENALTIES (-) GRAND TOTAL EXAMINATION NUMBER EXAMINATION NUMBER [6 Copyright reserved