Engineering Graphics and Design Grade 12 P2 2019 Memo (Eng)

Downloaded from hlayiso.com basic education Department: Basic Education REPUBLIC OF SOUTH AFRICA SENIOR CERTIFICATE EXAMINATIONS/ NATIONAL SENIOR CERTIFICATE EXAMINATIONS ENGINEERING GRAPHICS AND DESIGN P2 2019 MARKING GUIDELINES MARKS: 100 These marking guidelines consist of 9 pages and 1 A3 sheet. APPROVED: UMALUSI - S. de Bruin IM - J van Leeuwen CM - W Goodchild Copyright reserved Please turn over

Downloaded from hlayiso.com Engineering Graphics and Design/P2 2 SC/NSC - Marking guidelines DBE/2019 1 | COMPASS 1 2 |WESSLY 1 3 | TOOL STEEL 1 4 |16 1 5 |RIGHT VIEW 1 6 MORE ACCURATE ADJUSTMENT/REMAINS 1 ACCURATE 7 QUICK RELEASE FOR EASIER or QUICKER 1 OPENING / CLOSING OF THE LEGS 8 |G78 1 9 |12°, 13°, 14° 1 10 |C: M3 D: 156 2 11. | REVOLVED SECTION 1 12 STRAIGHT KNURLING / KNURLING / 1 GROOVED 13 | BETTER GRIP 1 14 /0.92 1 FIELD/SITE WELD E TAIL Cc 15 ) WELD LENGTH A 5 WELD PITCH B WELD PROCESS D 16 See below 17 4 TOTAL | 30 ANSWER 16: . ANSWER 17: Projection symbol Convention for gears meshing @ FREEHAND @ FREEHAND PAPER 2 QUESTION 1 GRADE 12 SC/NSC 2019 APPROVED MARKING GUIDELINE Copyright reserved Please turn over

Engineering Graphics and Design/P2 Downloaded from hlayiso.com 3 SC/NSC - Marking guidelines DBE/2019 CURVE THROUGH C 0@- CURVE V3 QUALITY ASSESSMENT CRITERIA 2.1 1 | GIVEN 7 CONSTRUCTION 5 POINTS + CURVE 7 o o-—_ - D TOTAL | 19 iA N y / i 2. CONSTRUCTION - CIRCLE DIVISIONS 1 -CONNECTING RODSBC+CD 4 5 PAPER 2 QUESTION 2.1 GRADE 12 SC/NSC 2019 APPROVED MARKING GUIDELINE Please turn over Copyright reserved

Downloaded from hlayiso.com Engineering Graphics and Design/P2 4 SC/NSC - Marking guidelines DBE/2019 2. CONSTRUCTION - CIRCLE DIVISION - PITCH - PITCH DIVISION - HORISONTAL PROJECTION (4) - VERTICAL PROJECTION - DIRECTION GIN NENENE ae ny CURVE QUALITY V3 ¥3 L ASSESSMENT CRITERIA 1 | GIVEN 1 CONSTRUCTION 5 OUTER HELIX 9 BR}oO]N INNER HELIX + SHAFT 33 SUBTOTAL 19 PAPER 2 QUESTION 2.2 GRADE 12 SC/NSC 2019 APPROVED MARKING GUIDELINE Copyright reserved Please turn over

Downloaded from hlayiso.com Engineering Graphics and Design/P2 5 SC/NSC - Marking guidelines DBE/2019 v4 ¥3 CIRCLE CONSTRUCTION “4 v4 HATCHING CORRECTLY APPLIED ‘Q P ¥1 CORRECT PLACEMENT Cn ASSESSMENT CRITERIA 1 | AUX. VIEW + PLACING 3 ISOMETRIC + NON-ISO' 2 | Lines 14 3, | ISOMETRIC CIRCLES + 7 CIRCLE CONSTR’ 4 |SECTIONED SURFACES | 44 + HATCHING TOTAL | 38 PAPER 2 QUESTION 3 GRADE 12 SC/NSC 2019 APPROVED MARKING GUIDELINE Copyright reserved Please turn over

Downloaded from hlayiso.com Engineering Graphics and Design/P2 6 SC/NSC - Marking guidelines DBE/2019 DETAIL OF THE MARK ALLOCATION FOR PLUG, PIN AND FLOAT TRIGGER DETAIL OF THE MARK ALLOCATION FOR HATCHING OF THE SEAL RING $x2=1 DETAIL OF THE MARK ALLOCATION FOR SCREW THREAD OF THE VALVE BODY 2x2=4 ASSESSMENT CRITERIA SECTIONAL FRONT VIEW 4 | INteT 144 2 | SEAL RING 2 3 | RETAINING RING 22 4 | ver 6t 5 | FLOAT TRIGGER + PIN 9 SUBTOTAL 54 PAPER 2 QUESTION 4 GRADE 12 SC/NSC 2019 APPROVED MARKING GUIDELINE Copyright reserved Please turn over

Downloaded from hlayiso.com Engineering Graphics and Design/P2 7 SC/NSC - Marking guidelines DBE/2019 @> ASSESSMENT CRITERIA RIGHT VIEW 41 | INLET + JET 2 ‘| VALVE BODY SUBTOTAL 6 PAPER 2 QUESTION 4 GRADE 12 SC/NSC 2019 APPROVED MARKING GUIDELINE Copyright reserved

Downloaded from hlayiso.com Engineering Graphics and Design/P2 8 SC/NSC - Marking guidelines DBE/2019 |__« | ~ [ 7 ~ - q U1) ASSESSMENT CRITERIA BOTTOM VIEW 1 (| INLET 94 VALVE BODY + 1 2 _| RETAINING RING + ot JET SUBTOTAL 19 PAPER 2 QUESTION 4 GRADE 12 SC/NSC 2019 APPROVED MARKING GUIDELINE Copyright reserved

Engineering Graphics and Design/P2 Downloaded fram.hlayiso.com DBE/2019 DETAIL OF THE MARK ALLOCATION FOR PLUG, PIN AND FLOAT TRIGGER DETAIL OF THE MARK ALLOCATION FOR HATCHING OF THE SEAL RING ix2=1 2 y (3) DETAIL OF THE MARK ALLOCATION FOR SCREW THREAD OF THE VALVE BODY FOR OFFICIAL USE ONLY INCORRECT ORTHOGRAPHIC PROJECTION INCORRECT OVERALL SCALE INCORRECT HATCHING PARTS NOT ASSEMBLED TOTAL PENALTIES (-) 3. ASSEMBLY 1 MARK FOR EVERY COMPONENT CORRECTLY ASSEMBLED (9 PARTS -1)=8 1. CENTRE LINE MARK ALLOCATION SANS COMPLIANT (LINE TYPE) 11 CENTRE LINES TOTAL 2 2 4 ASSESSMENT CRITERIA RIGHT VIEW 1 iwersser 4 2 | vaLvE Boy 2 SUBTOTAL 6 SECTIONAL FRONT VIEW 4 |iwer 144 2. | seacanc 2 3. ReTaWne rvs 22 4 |ver 63 5 | RoRmRanRTPN Tg SUBTOTAL 54 BOTTOM VIEW 4 Jimer ot 2 |Reiawnennes | 94 aer SUBTOTAL 19 GENERAL 41 | CENTRE LINES: 4 > a 3 3 | AssemBLy 8 ‘SUBTOTAL 15 TOTAL 94 PENALTIES () GRAND TOTAL Copyright reserved

Downloaded from hlayiso.com @—- (PENALTY -2) DETAIL OF THE MARK ALLOCATION SHOWING TWO FACES (NOT FOR DISTRIBUTION)