# Engineering Graphics and Design Grade 12 P2 NSC June 2021 QP

> Grade 12 Engineering Graphics and Design Paper 2 question paper from the NSC June Exam 2021 (English), 6 pages. Read online or download the free PDF.

- Page: https://www.hlayiso.com/library/engineering-graphics-design-p2-may-june-2021-eng/aa60fe53-e1a2-4c11-bb7b-29e80b8ada57
- Updated: 2026-09-27
- Subject: Engineering Graphics and Design
- Grade: Grade 12
- Document type: Question paper
- Year: 2021
- Exam period: NSC June Exam
- Paper: 2
- Curriculum: CAPS
- Pages: 6

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## About this document

Engineering Graphic And Design · Grade 12 · NSC June Exam · 2021. Question paper, 6 pages. Read online or download the PDF.

Read it free online on the page above; download the PDF from there.

## Document text

Text extracted from the PDF. Layout, diagrams and tables may not survive extraction.

### Page 1

basic education

Department
« y) Basic Education
"4 REPUBLIC OF SOUTH AFRICA

SENIOR CERTIFICATE EXAMINATIONS/
NATIONAL SENIOR CERTIFICATE EXAMINATIONS

INSTRUCTIONS AND INFORMATION

This question paper consists of FOUR questions.

Answer ALL the questions.

ALL drawings are in third-angle orthographic projection, unless otherwise stated.
ALL drawings must be prepared using pencil and instruments, unless otherwise
stated.

ALL answers must be drawn accurately and neatly.

ALL the questions must be answered on the QUESTION PAPER, as instructed.
ALL the pages, irrespective of whether the question was attempted or not, must
be re-stapled in numerical sequence in the TOP LEFT-HAND CORNER ONLY.
8. Time management is essential in order to complete all the questions.

9. Print your examination number in the block provided on every page.

10. Any details or dimensions not given must be assumed in good proportion.

FON>

NO

ENGINEERING GRAPHICS AND DESIGN P2

2021

MARKS: 100

TIME: 3 hours

This question paper consists of 6 pages.

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| Barcode label |
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FOR OFFICIAL USE ONLY
question | marks osTaen | } | sic} moveraten | } | sion] Re-MARKING | } | siGn
1
2
3
4
TOTAL
2/0|0 2|0|0 2|0/0

FINAL CONVERTED MARK CHECKED BY

100

COMPLETE THE FOLLOWING:
CENTRE NUMBER

CENTRE NUMBER
EXAMINATION NUMBER

Copyright reserved

EXAMINATION NUMBER

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### Page 2

Engineering Graphics and Design/P2

DBE/2021

Se

ANSWER 19,

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QUESTION 1: ANALYTICAL (MECHANICAL)

Given:

Two views of a rear derailleur assembly for a bicycle, a detailed enlargement, a title block and a table of questions.

The drawing is not presented to the indicated scale.

Instructions:

Complete the table below by neatly answering the questions which refer to the accompanying drawing, the title block and

Copyright reserved

mechanical content. [30]
1 | What is the title of the drawing? 1
2 | In which street is the engineering company situated? 1
3. | How many sets of drawings are there for this assembly? 1
4 | Who checked the drawing? 1
5 | What is the file name? 1
6 [If VIEW 1 is the front view, what is VIEW 2 called? 2
7 |Label the detailed enlargement of the encircled area at A on the given drawing. 1
8 | How many coil springs are there in the assembly? 1
9 | Determine the complete dimensions at: B: c: D: E: 4
10 | Measure the angle at F 1
11 | f scale 1 : 2 was used, what would the dimension at G read? 1
= 1 L 12 |Name the type of finish at H 1
eosanaall Ht 13 | What does the abbreviation AF at J stand for? 1
2 —-—- tH 44 | Name the type of section at K. 1
4 SPTSSOR HT
Hl 15 | Complete the cutting plane in VIEW 1 by inserting the arrows. Label the cutting plane P-P. 3
oh, W 46 | Name the type of section produced by cutting plane P-P. 1
+f is 47 | With reference to the tolerance, determine the complete minimum 2
dimension at L
4g | IM the space below (ANSWER 18), draw, in neat freehand, the SANS 10117 conventional A
representation of a BEARING.
go | IP the space to the left of VIEW 1, under ANSWER 19, draw and label, in proportion and in neat 5
- freehand, a removed section according to cutting plane S-S.
H TOTAL | 30
___ ANSWER 18:
’ g ale
Fa 33 3
/ R20 3 3
2
VIEW 1 VIEW 2 _
DRAWING SET: 18 SPEED STREET
FILE NAME: VBJW031 | DRAWING No: JOP12 10F3 Very Best Jockey WHEELS CHAINVILLE
DRAWING PROGRAM: AUTOCAD 2019 SCALE 1:1 ENGINEERING (vw) ono
DRAWN BY: REINHARD DATE: 02/03/2020 www.bicycleparts.sa | CELL: 098 765 4321 © Ee}
EXAMINATION NUMBER
CHECKED BY: MAFIKA DATE: 03/03/2020 [TITLE REAR DERAILLEUR
‘APPROVED BY: TSuMI DATE: 09/03/2020 ASSEMBLY SXANINATION NUNEERT [2

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### Page 3

Engineering Graphics and Design/P2

Se

DBE/2021

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ROLLER-FOLLOWER AND
CAMSHAFT DETAIL

Copyright reserved

QUESTION 2: LOCI (CAM)

Given:

© The detail of a camshaft and a roller-follower at
the minimum distance from the camshaft centre

* The position of centre point M on the drawing
sheet

Specifications:

¢ The roller-follower reciprocates on a 30° centre
line that passes through the centre of the
camshaft

* The minimum distance from the centre of the
roller of the follower to the centre of the
camshaft = 22 mm

* Rotation = clockwise

Motion:

The cam imparts the following motion to the

roller-follower:

* It moves 48 mm outwards from its given
position with uniform motion over the first 60°

* There is a dwell period for the next 45°

elt moves a further 12 mm outwards with uniform
motion over the next 75°

It returns to its original position with uniform
acceleration and retardation over the remainder
of the rotation

Instructions:

* Draw, to scale 1: 1, the camshaft and the
roller-follower in the given position.

* Draw, to a rotational scale of 30° = 8 mm anda
displacement scale of 1 : 1, the complete
displacement graph for the required motion.

* Label the displacement graph and include the
rotational scale.

* Using the given position of the roller-follower as
the 0° axis, project and draw the cam profile
from the displacement graph.

* Show the direction of rotation on the cam
profile.

* Show ALL construction and projection. [38]

ASSESSMENT CRITERIA

4 [Pcenreunes | 5

2. | GRAPH CONSTRUCTION 53

3 | DISPLACEMENT GRAPH

4 | CAM CONSTRUCTION

5 | CAM + CURVE QUALITY 153

PENALITIES
TOTAL | 38

EXAMINATION NUMBER
EXAMINATION NUMBER | 3

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Engineering Graphics and Design/P2

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Se

QUESTION 3; ISOMETRIC DRAWING

Given:

* The front view, top view and right view of a groove block
and slider assembly

* The position of point S on the drawing sheet

Instructions:
Using scale 1: 1, convert the orthographic views of the
groove block and slider assembly into a sectional isometric.
drawing on cutting plane A-A.

* Make S the lowest point of the drawing.
* Show ALL construction.
* NO hidden detail is required [42]

100

8) 16 8

60

80, 4100

ASSESSMENT CRITERIA

1 | AUX. view + PLACING 2

2 | LoweR PORTION 15

3. | UPPER PORTION 14

4 | SECTION 8

5 |consrescenmmetnes | 3
PENALTIES

TOTAL| 42

EXAMINATION NUMBER

EXAMINATION NUMBER | 4

Copyright reserved

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### Page 5

a Download ed Teom hlayiso.com sc

QUESTION 4: ASSEMBLY DRAWING

10 Given:
* The exploded isometric drawing of the parts of a pressure

» fs pump assembly, showing the position of each part relative
to all the others
a * Orthographic views of each of the parts of the pressure
pump assembly
WELDING SYMBOL * Awelding symbol

Instructions:

* Answer this question on page 6.

* Draw, to scale 1: 1 and in third-angle orthographic
oo 3 r projection, the following views of the assembled parts of

‘o fas) + rt

37
at

n
a
os

Loe

fet

RUBBER SEAL [2]
a the pressure pump assembly:

4.1 A half-sectional front view on cutting plane A-A, as
| seen from the direction of the arrow on the exploded
_ . isometric drawing. The cutting plane is shown on the
right view of the cylinder (part 1).
a0 HOOK [6] 4.2 The top view
n o10 4.3 The right view

NOTE:

* Planning is essential.

* The drawing must comply with the guidelines as contained
in the SANS 10111.

* The convention of symmetry may NOT be applied.

* Place the head of the plunger (part 3) inside the rubber
seal (part 2).

* Place surface P on the rubber seal (part 2) against
surface P on the inside of the cylinder (part 1).

* Show THREE faces of the M44 nut (part 9) in the front
view.

* The hook (part 6) must be welded onto the bracket (part 7)
Draw, to the given size, the complete welding symbol in

CYLINDER [1] |

250

20

_fro| BUSH [4]
PLUNGER [3]

< the correct position on the right view.
| * NO hidden detail is required [90]
2
PARTS LIST
| PART QUANTITY MATERIAL
GUIDE [5] oa 1 CYLINDER 1 ALUMINIUM
2.| RUBBER SEAL 1 RUBBER
WASHER [8] 3 PLUNGER 1 MILD STEEL
4 BUSH 1 BRASS
2. 5 GUIDE 1 ALUMINIUM
6 HOOK 1 MILD STEEL
7 BRACKET 1 MILD STEEL
8 WASHER 1 MILD STEEL
9 M44 NUT 1 MILD STEEL
WESTO PUMPS DINALEDI PAP 1020
ENGINEERING (PTY) LTD www. westopumps.za
M44 NUT [9] PRESSURE PUMP.
EXPLODED ISOMETRIC DRAWING MILLIMETRES ARE RARE A © e&4 [5]

_—_— 000000 UH SE

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QB FOR OFFICIAL USE ONLY
ge INCORRECT OVERALL SCALE

INCORRECT HATCHING

PARTS NOT ASSEMBLED
TOTAL PENALTIES (-)

ASSESSMENT CRITERIA
RIGHT VIEW
4 |sHaFT+BusH | 14
CYLINDER +
2 | BRACKET + 4
HOOK
3 [Gur 8
SUBTOTAL 4
HALF-SECTIONAL FRONT VIEW
1 | CYLINDER 12
2 | RUBBER SEAL 23
3 | PLUNGER 5
4 | BUSH 23
5 | GUIDE 114
6 Reoe 6
7 |waster’ | 62
SUBTOTAL 46
TOP VIEW
1 | CYLINDER 53
2 Beast 3}
3 |culbe+sHart | 44
4 |Washen 4
SUBTOTAL 173
GENERAL
41 | CENTRE LINES 3
2 | ASSEMBLY 8
SUBTOTAL 15
TOTAL| 90
PENALTIES (-)
GRAND TOTAL
EXAMINATION NUMBER

EXAMINATION NUMBER 6
Lael i OH

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