Engineering Graphics and Design Grade 12 P2 2017 QP (Eng)

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Downloaded from hlayiso.com Engineering Graphics and Design/P2 Nsc EC E/SEPTEMBER 2017 Los Ce X 1 / _|6 R rol__43 25 fl VIEW 1 FRONT VIEW VIEW 3 “ALL UNDIMENSIONED RADII ARE R 3. ALL DIMENSIONS ARE IN MILLIMETRES. | SCALE:2:1 PROGRAMME: AUTOCAD 2016 MATERIAL: CAST IRON FILE NAME: steering4.qwg QUANTITY: 2500 UNITS DRAWING No. SB5-12 TREATMENT: NONE MILLING FINISH: REMOVE ALL BURRS ots a 2. BASE HOLES 10 2016/05/22 AND SHARP EDGES iv INSERT WEB 2016/06/12 160 OLEA STREET REVISIONS DATE AUTO CRADDOCK’ TO awn PETER 20167610 ENGINEERING a ‘FR 048 487 2188 CHECKED: CARL 2016/05/15 TITLE STE ERI N G Ss U PPORT APPROVED: JACK 2016/06/25 QUESTION 1; ANALYTICAL (MECHANICAL) Given: A. detailed drawing of a steering support, a title block and a table of questions. The drawings have not been prepared to the indicated scale. Instructions: Complete the table below by neatly answering the questions, which al refer to the accompanying drawings and the title block. [27] QUESTIONS ANSWERS On what date was the dra 1g approved? What is the name of the engineering firm? Which indicated scale has been used? How many steering brackets must be produced? On what date was the base holes revised? What is the file name? What would view 1 be called? How many surfaces need to be machined? ololnjolalalelr What roughness value is required on the machined surfaces? s What is the depth of the thread on a standard M10 nut? How many threaded holes are there on the steering bracket? ry} What type of section did cutting plane S-S produce? e What type of feature is shown at 17 B Name the encircled feature at 2. a What is the thickness of the feature at 3? a Name the feature at 4. 3 Determine the complete dimensions: A B c D a In the box below, draw, in neat freehand, the symbol for the projection system used. alalulny TOTAL | 27 ANSWER 18 SYMBOL NAME NAME 2 Copyright reserved Please tum over

Downloaded from hlayiso.com Engineering Graphics and Design/P2 Nsc EC E/SEPTEMBER 2017 Los Oe QUESTION 2.1: LOCI (MEGANISM) Given: * Aand E are two fixed centre points, AB and DE are two cranks and BC and CD are two links which pivot at B, C and D. Instructions: © Copy, to scale 1: 1, the jew. * Construct the locus of point C for one complete revolution of the two cranks. Note: * Show ALL necessary constructions. [19] ASSESSMENT CRITERIA COPY GIVEN AND. CIRCLE DIVISION 7 2 | CONSTRUCTION LINES 4 PLOTTING POINTS AND CURVE TOTAL} 19 QUESTION 2.2; HELIX Given: © The incomplete right view of a helical shute. * The incomplete profile of the front view. Specification: © Right-handed * One revolution © Pitch = 96 mm Instructions: © Using the given information, draw a front view of the complete helical shute © Show the centre lines. * — Show ALL necessary construction * NO hidden detail is required [22] ASSESSMENT CRITERIA — + | constr ano pivisions | 54 i 2 | OUTER CURVE 103 3 | INNER CURVE 33 4 | DIRECTION AND CORE 23 TOTAL} 22 NAME NAME, 3 Copyright reserved Please tum over

Downloaded from hlayiso.com Engineering Graphics and Design/P2 Nsc EC E/SEPTEMBER 2017 68 QUESTION : ISOMETRIC DRAWING Given: * The front view, top view and left view of a bracket * The position of point S on the drawing sheet Instructions: Using scale 1 : 1, convert the orthographic views of the bracket to a sectional isometric drawing. * Make S the lowest point of the drawing. * Show ALL necessary construction. * NO hidden detail is required. [35] 78 ; 36. g Lot fal ASSESSMENT CRITERIA 1 | AUX’ VIEWS + PLACING 3 2 | ISO’ LINES % 3 | CIRCLE + CONSTR 4 4 | SQUARE 23 5 | HEXAGON AND SQUARE | 73 6 | SECTION 4 TOTAL 354 NAME NAME [4 Copyright reserved Please tum over

Downloaded from hlayiso.com Engineering Graphics and Design/P2 Nsc EC E/SEPTEMBER 2017 M20 x15. { a | SEAL [3] 25 10) 27 et { [Les SHAFT [5] 24 O18 EXPLODED ISOMETRIC DRAWING QUESTION 4: MECHANICAL ASSEMBLY Given: * The exploded isometric drawing of the parts of a water pump assembly, showing the position of each part relative to all the others * Orthographic views of each of the parts of the water pump 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 water pump assembly: 4.1 The sectional front view of the water pump assembly, on cutting plane A-A as seen from the direction of the arrow shown on the exploded isometric drawing. The cutting plane, that runs vertically through the centre of the assembly, is shown on the right view of the base (part 1). 4.2 A right view without any hidden detai * ALL drawings must comply with the guidelines contained in the SANS 10111. NOTE: * Show, in the sectional front view, THREE faces of the M14 nut and ALL necessary construction. * NO hidden detail is required. Add the following features to the drawing: © The cutting plane A-A [963] PARTS LIST PART ‘QUANTITY MATERIAL 41. BASE 1 MILD STEEL 2. IMPELLER 1 CAST IRON 3. SEAL 1 RUBBER 4. BEARING 2 MILD STEEL 5. SHAFT 1 MILD STEEL 6. CAP, 1 CAST IRON 7, WASHER 1 MILD STEEL 8. NUT 1 MILD STEEL 9. PIN 1 MILD STEEL TITLE PUMP ASSEMBLY AUTO CRADDOCK 5880 ENGINEERING FR 048 487 2188 ALL DIMENSIONS ARE| ALL UNSPECIFIED IN MILLIMETRES. RADII ARE R4, [al Copyright reserved Please tum over

Downloaded from hlayiso.com Engineering Graphics and Design/P2 Nsc EC E/SEPTEMBER 2017 ASSESSMENT CRITERIA SECTIONAL FRONT VIEW 4 | BASE 174 2 | IMPELLER 9 3 | SEAL 2 4 | BEARING 4 5 | SHAFT 15 6 | CAP " 7 | WASHER 2 8 | nur é 9 | PIN 1 SUB-TOTAL | 68} ASSESSMENT CRITERIA RIGHT VIEW 1 | BASE 6 2 | CAP 3 3 | WASHER 1 4 | NUT 4 5 | SHAFT 3 6 | CUTTING PLANE 3 7 | ASSEMBLY 8 SUB-TOTAL 28 TOTAL 96} NAME, NAME [6 ‘Copyright reserved Please tum over