Engineering Graphics and Design Grade 12 P2 2022 QP (Eng)

Downloaded from hlayiso.com INSTRUCTIONS AND INFORMATION ISEBE LEMFUNDO LEMPUMA KOLONI EASTERN CAPE EDUCATION DEPARTMENT OOS-KAAP ONDERWYSDEPARTEMENT FOR OFFICIAL USE ONLY MODERATED NATIONAL SENIOR CERTIFICATE MARK 1 2 3 4 GRADE 12 TOTAL 2 0 0 2 0 0 FINAL CONVERTED CHECKED BY *GRDSE2* MARK ENGINEERING GRAPHICS AND DESIGN P2 (DEAF) SEPTEMBER 2022 100 COMPLETE THE FOLLOWING: PREPARATORY EXAMINATION NAME NAME MARKS: 200 EXAMINATION CENTRE TIME: 3 hours This question paper consists of 6 pages. SCHOOL Copyright reserved Please turn over 1

Engineering graphics and design / P2 LE 54 Downloaded from hlayiso.com 28 29 NSC QUESTION 1: ANALYTICAL (MECHANICAL) EC / September 2022 AP ST Given: Ø10 A detailed drawing of a padlock, a title block, assembled views and a table of questions. The drawings have not been prepared to the indicated scale. R82 Instructions: 8 C Complete the table below by neatly answering the questions, which all refer to the accompanying drawings and the title block. [29] A A 6 19 R6 R6 VIEW 1 LATCH (1) QUESTIONS ANSWERS Ø11 6 R20 0° 1 What model padlock must be manufactured? 1 12 7 5 2 What is the file name of the drawing? 1 42 120° What is the name of the programme that was used 3 1 5 15 to draw the drawing? 4 How many revisions were made? 1 D 3 6 5 What does NTS stand for? 1 4 SHACKLE (3) 6 What, according to the note, determined the shape of 1 44 the key at F? Ø1 3 VARIOUS 5 7 What is the diameter for the DRIVER PINS? 1 DRIVER PINS: Ø1 (2) 12 8 8 What type of method was used to draw the spring 2 coils (B) ? Ø1 OIL HOLE 5 39 9 How many total parts does the padlock consist of? 2 10 Determine the degree at J. 1 COUNTER PIN (4) J 11 What is the dimension at E? 1 A 7 12 What is the purpose of the hole at K? 1 VIEW 2 VIEW 3 R3 E 2 13 What would VIEW 3 be called? 2 VIEW 4 HOUSING (5) K 14 What would VIEW 5 be called? 1 1 28 Ø14 15 What type of section is at C? 1 F 16 What type of section is at D? 1 VIEW 5 29 17 What is the purpose of the feature at G? 2 3 2 SCALE: NTS 19 18 What is the measurement at A? 2 G 5 19 How long did it take to approve the drawing after it 2 5 was drawn? Ø1 Ø32 H 20 In the space below (ANSWER 20), draw, in neat freehand, the SANS symbol for the 4 B 39 projection system used. 13 35 Ø1 TOTAL 29 2 Ø2 2 Ø4 2 Ø5 CL CORNER KOMANI AND BELL STREET ANSWER 20 2 3 KOMANI VARIOUS SPRINGCOILS (6) S/C PLUG (7) KEY (8) 7 LOCKS AND PADLOCKS 5319 MANUFACTURERS 045 730 5801 KEY PLUG (9) TITLE: PARTS LIST PADLOCK (MODEL 3652) PART MATERIAL QUANTITY PART MATERIAL QUANTITY APPROVED: LUDIDI 2022/03/15 ALL UNSPECIFIED RADII ARE R2. 1. LATCH COPPER 2 6. SPRING COILS STEEL 10 CHECKED: DLOKWENI 2022/03/10 ALL DIMENSIONS ARE IN SCALE: 1 : 1 MILLIMETRES. 2. DRIVE PINS COPPER 7 7. S/C PLUG COPPER 7 DRAWN: SEDIDI 2022/02/15 PROGRAMME: AUTOCAD 2021 3. SHACKLE STEEL 1 8. KEY STEEL 1 2. FILE NAME: CL3215.dwg NAME 4. COUNTER PIN STEEL 7 9. KEY PLUG COPPER 1 1. PATENTED: 1988 THE SHAPE OF THE KEY IS DETERMINED BY THE 5. HOUSING CAST IRON 1 REVISIONS DATE NOTE: FORMAT OF THE DRIVER PINS. QUANTITY: 50 000 NAME 2 Copyright reserved Please turn over

Engineering graphics and design / P2 LE Downloaded from hlayiso.com NSC EC / September 2022 AP QUESTION 2.1: LOCI (CAM) ST Given: x The starting position of the displacement diagram for a cam. x The specifications for the motion of the cam. Specifications: The cam imparts the following motion to the follower: x It dwells for a period of 45°. x It rises 20 mm with uniform motion for a period of 45°. x It rises 60 mm with uniform acceleration and retardation for a period of 180°. x It returns to the original position with simple harmonic motion for the last 90°. Instructions: x Draw, to a displacement scale of 1 : 1 and horizontal scale of 360° = 150 mm, the complete displacement graph for the required motion. x Label the graph and indicate the scale. ASSESSMENT CRITERIA x Show ALL necessary construction. [19] 1 CONSTRUCTION 2 DWELL + 2 UNIFORM MOTION 121 0° ACCELERATION AND 3 RETARDATION 7 4 SIMPLE HARMONIC 721 5 LABEL + SCALE 1 SUB-TOTAL 2.1 19 B D QUESTION 2.2: LOCI (MECHANISM) Given: A x Figure 1 shows the detail of a rotating crank AB, connecting rod BE and a fixed vertical groove CD. x Figure 2 shows the schematic diagram of the drawing. x Starting point A of the rotating crank. C Motion: x The rotating crank AB moves clockwise for a full 360°. FIGURE 1: E x The connecting rod BE moves while it slides vertically, in equal segments, from C to D for the first 180° and back, in equal segment, to its original position for the last 180°. ASSESSMENT CRITERIA Instructions: A x Draw the given schematic diagram (FIGURE 2). CONSTRUCTION OF 1 DIAGRAM 4 x Project and draw the loci of point E to the given Ø60 B D motion. CONST. OF CIRCLE IN 12 2 EQUAL PARTS 2 x Show ALL necessary construction. [19] CONSTRUCTION OF 30 3 LOCI 5 A 4 LOCI OF POINT E 8 30 SUB-TOTAL 2.2 19 C 45 20 SUB-TOTAL 2.1 19 E TOTAL 38 60 NAME FIGURE 2: NAME 3 Copyright reserved Please turn over

Engineering graphics and design / P2 LE Downloaded from hlayiso.com NSC QUESTION 3: ISOMETRIC EC / September 2022 AP ST Given: x Three views of a MACHINE PART in third angle orthographic projection. x Starting point S. Instructions: x Draw, to scale 1 : 1, an isometric view of the MACHINE PART. 46 45 x Make point S the lowest point of the drawing. 20 x Show ALL necessary construction. x NO hidden detail is required. 12 [42] 20 88 68 44 S 13 18 20 23 10 36 43 10 R20 88 20 45 18 9 S S 26 26 11 66 11 87 ASSESSMENT CRITERIA 1 CONSTR. + PLACEMENT 221 2 ISOMETRIC LINES 30 3 NON ISOMETRIC LINES 5 4 HALF CIRCLE + CONSTR. 321 S 5 CENTRE LINES 1 TOTAL 42 NAME NAME 4 Copyright reserved Please turn over

Engineering graphics and design / P2 LE Downloaded from hlayiso.com NSC EC / September 2022 AP 1 QUESTION 4: MECHANICAL ASSEMBLY ST R7 Given: 2 x Orthographic views of each of the parts of the gas valve. B R39 x The exploded isometric drawing of the parts of a gas valve 12 Ø30 Ø18 assembly, showing the position of each part relative to the others. M14 X 2 NUT (1) S B x Starting point S on the answer sheet, page 6. 7 R62 Ø28 Instructions: x Answer this question on page 6. 27 Ø50 x Draw, to scale 1 : 1 and in third angle orthographic projection, Ø14 R21 the following views of the assembled parts of the gas valve. 5 x The front half of the top view of the gas valve assembly in R9 R9 symmetry. M42 X 2 21 4 x The sectional front view of the gas valve assembly, on GLAND (3) cutting plane A-A, as seen from the direction of the arrow 6 shown on the exploded isometric drawing. The cutting plane is Ø32 Ø18 M14 WASHER (2) S shown on the left view of the housing (part 8). 15 3 8 40 34 NOTE: 24 1. Starting point S is indicated on the front views of the gland Ø18 (part 3), the handle (part 5) and the shaft (part 6). 2. Assemble the gas valve in its closed position. 32 M56 X 2 3. Show, in the sectional front view, THREE faces of the M14 nut. Ø24 4. Show ALL construction. 4 Ø74 5. NO hidden detail is required. 32 6. Make use of a partial section to indicate the seal at the bottom M14 X 2 of the shaft. HANDLE (5) 53 7. All drawings must comply with the guidelines contained in SANS 10111. M56 X 2 25 GLAND SEAL (4) Ø32 M42 X 2 Add the following features on the drawing: 41 A x The cutting plane A-A in the TOP VIEW. x The convention symbol to indicate symmetry in the TOP VIEW. 6 x Label the assembly: GAS VALVE S 24 x Indicate the scale [91] 30 17 TITLE: Ø42 130 65 33 26 GAS VALVE M34 X 2 ° 7 135 Ø20 8 GAS-EASY BELL STREET 21 4 KOMANI 14 Ø FRONT VIEW 5319 Ø24 SOLUTIONS 045 730 5801 137 Ø32 32 4 ALL DIMENSIONS ARE MILLIMETRES. 12 14 Ø6 ALL UNSPECIFIED RADII ARE R3. 24 12 7 3 PARTS LIST PART MATERIAL QUANTITY SHAFT (6) 37 8 Ø18 42 1. M14 NUT X 2 STD 1 3 2. M14 WASHER STD 1 3. GLAND COPPER 1 5 4. GLAND SEAL RUBBER 1 A Ø10 5. HANDLE CAST IRON 1 5 120° Ø42 6. SHAFT COPPER 1 Ø54 7. SEAL RUBBER 1 SEAL (7) HOUSING (8) Ø60 8. HOUSING COPPER 1 5 Copyright reserved Please turn over

Engineering graphics and design / P2 LE Downloaded from hlayiso.com NSC EC / September 2022 AP ST ASSESSMENT CRITERIA TOP VIEW 1 M14 NUT + WASHER 421 2 HANDLE 1 3 CUTTING PLANE 3 CENTRE LINES + CONVEN. 4 SYMMETRY LINES 2 S SUB-TOTAL 1021 SECTIONAL FRONT VIEW 1 M14 NUT 521 2 M14 WASHER 221 3 GLAND 5 4 GLAND SEAL 221 5 HANDLE 1221 6 SHAFT 1121 7 SEAL 2 8 HOUSING 2821 9 ASSEMBLY 7 10 TITLE + SCALE 1 11 CENTRE LINES 221 SUB-TOTAL 8021 TOTAL 91 NAME NAME 6 Copyright reserved