ENGINEERING DRAWING N3
T520(E)(A6)T AUGUST EXAMINATION NATIONAL CERTIFICATE
ENGINEERING DRAWING N3
(8090283)
6 August 2014 (Y-Paper) 13:00?17:00
This question paper consists of 10 pages.
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T520(E)(A6)T
DEPARTMENT OF HIGHER EDUCATION AND TRAINING REPUBLIC OF SOUTH AFRICA
NATIONAL CERTIFICATE ENGINEERING DRAWING N3
TIME: 4 HOURS MARKS: 100
INSTRUCTIONS AND INFORMATION
1.
Answer ALL the questions.
2.
Read ALL the questions carefully.
3.
Number the answers according to the numbering system used in this question
paper.
4.
Use BOTH sides of the drawing sheet.
5.
A 15 mm border must be drawn on both sides of the drawing sheet.
6.
ALL drawing work including candidate information must be done in pencil.
7.
A radius curve stencil may be used to draw smaller arcs.
8.
Unspecified radii must be R3.
9.
A balanced layout is very important and candidates will be penalised for poor
planning.
10.
ALL drawing work must conform to the latest SANS 10111 Code of Practice
for Engineering Drawing.
11.
Write neatly and legibly.
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T520(E)(A6)T
MARK ALLOCATION
QUESTION 1: FREEHAND DRAWING
(10)
Correctness
5
Line work
2
Accuracy and proportion
2
Layout and neatness
1
QUESTION 2: SECTIONAL DRAWING
(25)
2.1
Correctness ? Full sectional front view
8
2.2
Correctness ? Full sectional left view
7
Line work ? 2 marks per view
4
Accuracy ? 2 marks per view
4
Layout and neatness
2
QUESTION 3: ASSEMBLY DRAWING
(30)
Correctness ? assembly of components, full sectional drawing
18
Line work
5
Accuracy
5
Layout and neatness
2
QUESTION 4: DETAIL DRAWING
4.1.1
Correctness ? Full sectional front view (Item 1)
4.1.2
Correctness ? Left view (Item 1)
4.2.1
Correctness ? Front view ( Item 2)
Line work ? 1 mark per view
Accuracy ? 1 mark per view
Layout and neatness
QUESTION 5: PERSPECTIVE DRAWING Correctness Line work Accuracy Isometric projection
Layout and neatness
(20) 4 4 4 3 3 2
(15) 8 2 2 2 1
TOTAL: 100
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QUESTION 1: FREEHAND DRAWING Figure 1 shows an isometric view of a component. Make a freehand drawing of the given view, approximately full size.
T520(E)(A6)T
FIGURE 1 [10]
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T520(E)(A6)T
QUESTION 2: SECTIONAL DRAWING
Figure 2 shows two primary views of a component.
Draw, to scale 1 : 1 and in first-angle orthographic projection, the following views of the
component:
2.1
A full sectional front view on cutting plane X-X
(12)
2.2
A full sectional left view on cutting plane Y-Y
(13)
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FIGURE 2
[25]
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