# Engineering Graphics and Design Grade 12 P2 2018 QP (Eng)

> Grade 12 Engineering Graphics and Design Paper 2 question paper from the NSC November Exam 2018 (English), 6 pages. Read online or download the free PDF.

- Page: https://www.hlayiso.com/library/engineering-graphics-design-p2-nov-2018-eng/bd8bc95a-7e5b-4599-a3c8-be203a711d95
- Updated: 2026-09-27
- Subject: Engineering Graphics and Design
- Grade: Grade 12
- Document type: Question paper
- Year: 2018
- Exam period: NSC November Exam
- Paper: 2
- Curriculum: CAPS
- Pages: 6

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## About this document

Engineering Graphic And Design · Grade 12 · NSC November Exam · 2018. 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

NATIONAL
SENIOR CERTIFICATE

i ENGINEERING GRAPHICS AND DESIGN P2
i]

i NOVEMBER 2018

MARKS: 100

TIME: 3 hours

Copyright reserved

This question paper consists of 6 pages.

FOR OFFICIAL USE ONLY
QUESTION ] MARKS OBTAINED | 3 | SIGN MODERATED |}  siGN RE-MARKING | 3] SIGN
1
2
3
.
1 4
1
i TOTAL
|
) 2])0/0 2/0/0 2])0/0
FINAL CONVERTED MARK CHECKED BY
100
oe _

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.

ONS

NO

COMPLETE THE FOLLOWING:
CENTRE NUMBER

CENTRE NUMBER
EXAMINATION NUMBER

|
|
|
Barcode label |
|
|
|

EXAMINATION NUMBER

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### Page 2

Engineering Graphics and Design/P2

DBE/November 2018

Downloaded from hlayiso.com

Copyright reserved

Loy C . QUESTION 1: ANALYTICAL (MECHANICAL)
Ug? - \
Given:
The front view and top view of a micrometer, sections, a parts list, a title block and a table of questions. The drawing
has not been prepared to the indicated scale.
- EL Instructions:
SECTION S-S SECTION T-T SECTION U-U Complete the table below by neatly answering the questions which refer to the accompanying drawing, title block and
mechanical content. [30]
u QUESTIONS ANSWERS
| 1 | Who prepared the drawing? 1
7
: 2 | On what date was the drawing checked? 1
| 3 | What was Siyabongi's responsibility? 1
a: - z 4 | What is the drawing number? 1
5 | What material is used to manufacture the anvil? 1
: 6 | How many parts make up this micrometer? 1
| 7 | At what temperature will the micrometer be accurate? 1
u 1 8 | What is the maximum size that this micrometer can measure? 1
Why is the shaft at A drawn as a phantom line (double chain
9 |, 1
line)?
10 | What does the S-break at B indicate? 1
8
11 | Give TWO uses of chain lines on mechanical drawings. 2
12 | How many surfaces on this micrometer are knurled? 1
2 64 + 3 13 | What is VIEW 1 called? 1
14 | Determine the complete dimensions at: Cc: D E 5
15 | Measure the angle at F. 1
22
16 | Name the type of section at G. 1
16 17 | Name the type of section at H. 1
18 | Name the type of section at J 2
4g | With reference to the tolerance at K, determine the minimum y
dimension.
20 | In the space below (ANSWER 20), draw, in neat freehand, the symbol for the projection system y
VIEW 1 used.
TOTAL | 30
PARTS LIST DRAWING PROGRAM: AUTOCAD 2018 SCALE 1:1
PART QUANTITY MATERIAL DIMENSIONS ARE ACCURATE AT 20°C | DRAWING NUMBER ANSWER 20: Projection symbol
1 Janvi. 1 TUNGSTEN
ACCURACY: 1 TURN OF THE OUTER SLEEVE 0,5 mm
2 | FRAME 1 CAST IRON
MEASUREMENT RANGE: MINIMUM = 0,01 & MAXIMUM = 25,00
3 | SPINDLE LOCKNUT 1 TOOL STEEL
APPROVED: SIYABONGI DATE: 2018-02-28
4 | INNER SLEEVE 1 TOOL STEEL
CHECKED: JACQUES DATE: 2018-02-10
5 | OUTER SLEEVE 1 TOOL STEEL —-—— - —— - —-— - —_ - —
DRAWN: WENDY DATE: 2018-01-08
6 | SPINDLE 1 SILVER STEEL
EXAMINATION NUMBER
7 | screw 1 TOOL STEEL TITLE MICROMETER
8 | RATCHET 1 TOOL STEEL EXAMINATION NUMBER [2

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### Page 3

Engineering Graphics and Design/P2

DBE/November 2018

2D
Ce

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QUESTION 2: LOCI
NOTE: Answer QUESTIONS 2.1 and 2.2.
2.1 CAM

Motion:
Acam rotates at constant velocity imparting the following motion to a follower:

It rises with uniform motion for 21 mm over the first 60°.

There is a dwell period for the next 75°.

It rises with uniform motion for a further 43 mm over the next 45°.

It descends with simple harmonic motion back to the original position over the rest of the rotation.

Instructions:

* Draw, to a rotational (horizontal) scale of 360° = 114 mm and a displacement scale of 1 : 1, the
complete displacement graph for the required motion.

* Label the displacement graph and include the scale.

Copyright reserved

Show ALL construction. [11]
ASSESSMENT CRITERIA 2.1
1 | CONSTRUCTION 4
2 | POINTS + CURVE 6
3 | LABELS 1
PENALTIES (-)
SUBTOTAL 1
2.2 MECHANISM
Given:

* Asschematic drawing of a mechanism consisting
of crank OA, sliding rod AB, rod CD, horizontal
groove FG and swivel guide E

* The position of centre point O on the drawing
sheet

Specifications:

© The positions of centre point O, swivel guide E
and groove FG are fixed

* Sliding rod AB is pin-jointed to crank OA at A

* Rod CD is pin-jointed to sliding rod AB at C

*CD =90mm

Motion:
As crank OA rotates in a clockwise direction, point
B, of sliding rod AB, reciprocates along groove FG, ASSESSMENT CRITERIA 22
and rod CD slides through swivel guide E
1 | GIVEN 6
Instructions:
* Draw, to scale 1: 1, the given schematic | 2 | CONSTRUCTION 5
drawing of the mechanism. 3 |ponrs » CURVE 1a
+ Trace the loci generated by point C and by point
D for ONE complete rotation of crank OA. PENALTIES ()
2.2 SUBTOTAL 25
Show ALL construction [25]
2.1 SUBTOTAL 4
TOTAL | 36
EXAMINATION NUMBER
EXAMINATION NUMBER [3

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Ct QUESTION 3: ISOMETRIC DRAWING
s
Given:
¢ The front view, top view and left view of a
bracket

© The position of point S on the drawing sheet

Instructions:
Using scale 1 : 1, convert the orthographic views
of the bracket into an isometric drawing.

* Make S the lowest point of the drawing.

Show ALL construction.
« NO hidden detail is required. [38]

20. 42 38

30

i
i
3

12

|.18_|

18,

76

ASSESSMENT CRITERIA
1 | PLACEMENT +Aux. view | 2
2 | FRONT PORTION 223
3 | BACK PORTION 5
CIRCLE * CIRCLE
4 | CONSTRUCTION + oL 8

PENALTIES (-)

TOTAL | 38

EXAMINATION NUMBER,

EXAMINATION NUMBER [4

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### Page 5

Engineering Graphics and Design/P2

BUSH [1]

6

a
€3) B16

51

pl le.

PUMP PLUNGER [4]

™ WORM SHAFT [2]

Downloaded from hlayiso.co

‘AN EXAMPLE OF A CONVENTIONAL

ae

/ DETAIL T

250
a4
36

o

SPLIT BUSH [6]

REPRESENTATION OF A WORM GEAR
ASSEMBLY

50

CRANK GEAR [5] SPINS @6 |
20,
8
22 ore
T
! ol
its s
1 al. 2 12
i g
\
T
'
-l.
10
A
126
33 34 44). 25
3 HOLES @6 415

EXPLODED ISOMETRIC DRAWING

232

24,

Copyright reserved

37

22.2

r2e/ hl
a

PUMP BODY [9]

=e

QUESTION 4: MECHANICAL ASSEMBLY

Given:

* The exploded isometric drawing of the parts of an oil pump
assembly, showing the position of each part relative to all the
others

* Orthographic views of each of the parts of the oil pump
assembly

# An example of a conventional representation of a worm gear
assembly.

Instructions:

* Answer this question on page 6.

Draw, to scale 1 : 1 and in third-angle orthographic projection,
the following views of the assembled parts of the oil pump
assembly:

4.1 The front view as seen from the direction of the arrow
shown on the exploded isometric drawing.

4.2 A sectional right view on cutting plane A-A. The cutting
plane, which passes vertically through the oil pump
assembly, is shown on the front view of the pump
body (part 9).

NOTE:

* Planning is essential.

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

* Show THREE faces of the M14 retaining bolt (part 3) in the
front view

* Draw a conventional representation of the worm gear
assembly in the sectional right view.

* Add cutting plane A-A

* NO hidden detail is required. [96]
PARTS LIST
PARTS QUANTITY, MATERIAL
1 | BUSH 1 BRONZE
2 | WORM SHAFT 1 ENS
4 | PUMP PLUNGER 1 BRASS
5 | CRANK GEAR 1 EN 19
6 | SPLIT BUSH 2 BRONZE
8 | COVER PLATE 1 MILD STEEL
101 FLAMINGO
BVI INDUSTRIAL PARK
www.BVJ.co.za
PROJECTS CC ® 012 345 6789
OIL PUMP

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### Page 6

a Downloaded frem hlayiso.com —

FOR OFFICIAL USE ONLY

og INCORRECT ORTHOGRAPHIC PROJECTION

INCORRECT OVERALL SCALE

INCORRECT HATCHING

PARTS NOT ASSEMBLED

TOTAL PENALTIES (-)

ASSESSMENT CRITERIA
FRONT VIEW
1 | coverriate 8
2. | pump eooy+ aust 5
3. | WORM SHAFT 23
4 [wererannesorr | 4g
SUBTOTAL 20
SECTIONAL RIGHT VIEW
1 | coveruare re
2 | Pump Booy 113

3 | crankcear+snarr | 417

4 | PUMP PLUNGER 7
5 | srureus 3
6 | PUMP HOUSING 10
SUBTOTAL 60
GENERAL
1 | cevreunes 4
2 | SECTIONAA 3
3 | assewsry @
SUBTOTAL 16
TOTAL | 96
PENALTIES ()
GRAND TOTAL
EXAMINATION NUMBER
EXAMINATION NUMBER [6

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