Engineering Graphics and Design Grade 11 P2 2020 Memo

Downloaded from hlayiso.com ISEBE LEMFUNDO LEMPUMA KOLONI EASTERN CAPE EDUCATION DEPARTMENT OOS-KAAP ONDERWYSDEPARTEMENT NATIONAL SENIOR CERTIFICATE GRADE 11 ENGINEERING GRAPHICS AND DESIGN P2 NOVEMBER 2020 FINAL EXAMINATION MARKING GUIDELINE MARKS: 200 TIME: 3 hours This marking guideline consists of 6 pages. Copyright reserved

Downloaded from hlayiso.com Engineering graphics and design / P2 NSC EC / November 2020 QUESTION 1: ANALYTICAL (MECHANICAL) ANSWERS 1 BUFFALO 1 2 LUSIKISIKI 1 3 DOEEC-20 1 4 lak78.dwg 1 5 XONGO 1 6 TONA 1 7 3 DAYS 2 8 CHROMIUM-VANADIUM 1 9 NONE 1 10 5 000 1 11 RINGHEAD 1 12 PNEUMATIC GUN 1 13 4 2 14 PART SECTION 1 15 TOP VIEW 1 16 FULL SECTION RIGHT VIEW 2 16 FULL SECTION FRONT VIEW 2 6 (10 - R6 + 2) 2 R1 2 18 R5 1 50 + 22 + 13 + 12 = 97 2 19 4 TOTAL 32 ANSWER 19 FH 2 Copyright reserved Please turn over

Engineering graphics and design / P2 NSC EC / November 2020 0° / 360° u z 330° 30° ü z x zx x z z u u ü ü ü x 300° 60° x z ü ü z z { uu { x ü { x üüü x { ü 0° 30° 60° 90° 120° 150° 180° 210° 240° 270° 300° 330° 360° ü { ü MINIMUM DISTANCE ü ü CAM DISPLACEMENT DIAGRAM ü 270° C SCALE: 120 mm = 360° ü ü 90° { u { ASSESSMENT CRITERIA ü 1 GIVEN + MIN. DISTANCE 5 üu 2. GRAPH CONSTRUCTION 2 GRAPH CONSTRUCTION 3 · LENGTH 120 MM 1 üv · DIVIDED INTO 12 EQUAL PARTS 2 TOTAL 3 PERPENDICULAR { üw 3 HEIGHT 5 ü 240° { 120° 6. CAM CONSTRUCTION · ALIGNMENT WITH MIN. DISTANCE 1 UNIFORM MOTION + · PLOT DIRECTION ANTI-CLOCKWISE 1 x 4 DWELL 4 · DIRECTION INDICATED 1 · PROJECTION FROM GRAPH 4 · CIRCLE DIVISION 5 üy 5 GRAPH LABEL + SCALE 2 Downloaded from hlayiso.com { · ARC PROJECTION 1 TOTAL 13 { üz 6 CAM CONSTRUCTION 13 { ü 210° 150° 7. CURVE QUALITY · THROUGH FOLLOWER TOUCH { 7 CAM + CURVE QUALITY 7 POINTS 6 CURVE QUALITY 1 180° TOTAL 7 TOTAL 39 QUESTION 2: CAM 3 Copyright reserved Please turn over

Downloaded from hlayiso.com Engineering graphics and design / P2 NSC EC / November 2020 QUESTION 3: ISOMETRIC y z y y y y y z y y v v v v v v v v x x y x v v v v x x x vv v v v v v v v v x x v v x v x vv v v v x v v v v w w v v w w v w w w w v w ww w w w w v vw v v w w v w v v Sü ASSESSMENT CRITERIA 30 1 AUX' VIEW + PLACING 4 ü 26 ü v 2 ISOMETRIC LINES 22½ w 3 SQUARE + SLOT 9½ x 4 HEXAGON 5½ üü y 5 CIRCLE + 4½ CIRCLE CONST. z 6 CENTRE LINES 2 TOTAL 48 4 Copyright reserved Please turn over

Downloaded from hlayiso.com Engineering graphics and design / P2 NSC EC / November 2020 QUESTION 4: MECHANICAL ASSEMBLY v v v u u v w w u CL u u v w w u v w u u u v v v w w v v v v y y y y y y y y y y ASSESSMENT CRITERIA FRONT VIEW y y u 1 HANDLE BAR 4½ üv 2 SCREW ROD 6½ CL y CL w 3 HANDLE BAR CAP 3½ y x 4 M16 BOLT 9½ y y 5 VICE BASE 12 y CL 6 CENTRE 2 LINES 7 ASSEMBLY 3 x S SUB-TOTAL 41 y y y y x x x x x x x x x x y y y y x x x x x x xx SL 5 Copyright reserved Please turn over

Downloaded from hlayiso.com Engineering graphics and design / P2 NSC EC / November 2020 QUESTION 4: MECHANICAL ASSEMBLY v v v v wv u w v H H CL H Hv v vv y y y y y H y y y y y H ASSESSMENT CRITERIA HALF SECTIONAL RIGHT v v y CL VIEW uH 1 HANDLE BAR 1 H H y H vH 2 SCREW ROD 10 y v zv wH 3 1½ zvv HANDLE BAR CAP H zz xH 4 M16 BOLT 4½ yH 5 VICE BASE 17½ H y y y y üz H 6 4½ z MOVEABLE JAW CL 7 CENTRE LINES 1 H SUB-TOTAL 40 ü H H T y H H y y y y H H y y y x x H x x x x xx 6 Copyright reserved