Engineering Graphics and Design Grade 11 P2 2022 Memo (Eng)

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 2022 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 2022 QUESTION 1: ANALYTICAL (MECHANICAL) ANSWERS 1 HONING DEVICE 1 2 SHOP 11 1 3 hd207b.dwg 1 4 2021/03/15 1 5 NAIKER 1 6 FAKU 1 7 AUTOCAD 2021 1 8 10 1 9 11 000 X 2 = 22 000 2 10 2 1 11 TOP VIEW 1 12 LEFT VIEW 1 13 8 cm 2 14 TO KEEP THE KNOB IN PLACE 2 15 DIAMOND KNURLING 1 26 - R7 - 13 = 6 1 120º 1 16 24 - (R5 X 2) = 14 OR 34 - (Ø10 X 2) 1 Ø14 1 M6 - (M6 X 0.1 X 2) = Ø4.8 2 17 4 18 4 32 ANSWER 17 FH ANSWER 18 FH 2 Copyright reserved Please turn over

u 0° / 360° y ü w w w Copyright reserved 30° 330° ü ü y w y w u u Engineering graphics and design / P2 y w w w w y w 60° ü 300° z y w z z z uu z ü z ü w w 0° 30° 60° 90° 120° 150° 180° 210° 240° 270° 300° 330° 360° ü ü MINIMUM DISTANCE z ü ü CAM DISPLACEMENT DIAGRAMü z SCALE: 120 mm = 360° u ü ü H ü 270° 90° z C z NSC z z 2. GRAPH CONSTRUCTION · LENGTH 120 MM 1 ASSESSMENT CRITERIA z · DIVIDED INTO 12 EQUAL PARTS 2 TOTAL 3 z 1 GIVEN + MIN. DISTANCE 5½ z240° 5. CAM CONSTRUCTION üu z · ALIGNMENT WITH MIN. DISTANCE 1 · PLOT DIRECTION CLOCKWISE 1 2 GRAPH CONSTRUCTION 3 · DIRECTION INDICATED 1 üv · PROJECTION FROM GRAPH 3 UNIFORM MOTION + z · CIRCLE DIVISION 3 3 6½ · ARC PROJECTION 1 üw DWELL Downloaded from hlayiso.com TOTAL 10 z 4 GRAPH LABEL + SCALE 2 x 150° z210° 6. CURVE QUALITY z · THROUGH FOLLOWER TOUCH POINTS 5½ 5 CAM CONSTRUCTION 10 · CURVE QUALITY 4½ üy 180° TOTAL 10 6 CAM + CURVE QUALITY 10 üz 3 QUESTION 2: CAM TOTAL 37 EC / November 2022 Please turn over

Downloaded from hlayiso.com Engineering graphics and design / P2 NSC EC / November 2022 QUESTION 3: ISOMETRIC v v v x z v x z v x v x x x v v v ü v x y x w x v ü v v w z v v v w y v v w v y ü ü y y v v z v w v y v v v w v v v y w w w v v v v v v w v v v v v v v v v ASSESSMENT CRITERIA ü 1 AUX' VIEW + PLACING 3 S ü v 2 ISOMETRIC LINES 22 ü w 3 NON-ISOMETRIC LINES 5 x 4 HEXAGON + SQUARE 4½ CIRCLE + ü y 5 CIRCLE CONST. 7½ z 6 CENTRE LINES 2 TOTAL 44 4 Copyright reserved Please turn over

Downloaded from hlayiso.com Engineering graphics and design / P2 NSC EC / November 2022 QUESTION 4: MECHANICAL ASSEMBLY LEFTVIEW ASSESSMENT CRITERIA LEFT VIEW u 1 BASE 3 v 2 BRACES 3 w 3 PULLEYS 1½ x 4 AXLES 1 y 5 AXLE HOLDERS 3½ z CL 6 M20 BOLTS AND WASHER 7 { CL 7 M8 SCREWS 5 w TOTAL 24 w w v y x x y y y y CL y CL {{ {{ v { { v CL yCL u CL CL u z z z z z z uvz CL CL vu z z z u v u 5 Copyright reserved Please turn over

Downloaded from hlayiso.com Engineering graphics and design / P2 NSC EC / November 2022 QUESTION 4: MECHANICAL ASSEMBLY LEFTSIDE OF THE HALF SECTIONAL FRONTVIEW w w w w w w H w wH w w H z v w w zH H w y w w ” y y” ” H xx x x x xx x H x x x CLx x x x x x xH x x x xx x yy yy”x z w y w z w CL w H H w w H H w z w w w H w v vw w ASSESSMENT CRITERIA u | u HALF SECTIONAL FRONT VIEW { { u u uH 1 BASE 5 { { { { H vH 2 BRACES 3 CL { H { H uH u | wH 3 PULLEYS 17 u{ { { x H CL 4 AXLES 13½ { { | v u y 5 ROLLER BEARING 4 z H CL 6 AXLE HOLDERS 4 { H CL 7 M20 BOLT 7½ |H 8 M20 WASHER 2 ”H 9 CIRCLIP 3 10 ASSEMBLY 4 TOTAL 63 6 Copyright reserved