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(8090283) -1- T530(E)(M29)T

Copyright reserved Please turn over

T530(E)(M29)T APRIL EXAMINATION

NATIONAL CERTIFICATE

ENGINEERING DRAWING N3

(8090283)

29 March 2016 (X-Paper) 9:00–13:00

REQUIREMENTS: One A2 drawing paper

This question paper consists of 10 pages.

(8090283) -2- T530(E)(M29)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. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.

Answer ALL the questions. Read ALL the questions carefully. Number the answers according to the numbering system used in this question paper. Use BOTH sides of the drawing sheet. A 15 mm border must be drawn on both sides of the drawing sheet. ALL drawing work including candidate information must be done in pencil. A radius curve stencil may be used to draw smaller arcs. Unspecified radii must be R3. A balanced layout is very important and candidates will be penalised for poor planning. ALL drawing work must conform to the latest SANS 10111 Code of Practice for Engineering Drawing. Work neatly.

(8090283) -3- T530(E)(M29)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 5

2.2 Correctness – Full-sectional top view 7

2.3 Correctness – Full-sectional left view 5

Line work – 1 mark per view 3

Accuracy – 1 mark per view 3


QUESTION 3: ASSEMBLY DRAWING [30]

3.1 Correctness 16

Line work 5

Accuracy 5

3.2 Title and scale 2


QUESTION 4: DETAILED DRAWING [20]

4.1.1 Correctness – Full-sectional front view (Item 1) 3


4.2.2 Correctness – Full-sectional left view (Item 2) 4




QUESTION 5: ISOMETRIC PROJECTION [15]

Correctness 8

Line work 2

Accuracy 2

Scale 2


TOTAL 100

(8090283) -4- T530(E)(M29)T


QUESTION 1: FREEHAND DRAWING FIGURE 1 shows a full-sectional front view of a bracket. Make a freehand drawing of the given view, approximately full size.

FIGURE 1

[10]

(8090283) -5- T530(E)(M29)T


QUESTION 2: SECTIONAL DRAWING FIGURE 2 shows two primary views of a component. Draw, to scale 1 : 1 and in THIRD-ANGLE ORTHOGRAPHIC PROJECTION, the following views of the component:

2.1 A full-sectional front view with the top view in section (9) 2.2 A full-sectional top view (9) 2.3 A full-sectional right view on cutting plane X-X (7) No hidden detail is necessary.

FIGURE 2 [25]

(8090283) -6- T530(E)(M29)T


QUESTION 3: ASSEMBLY DRAWING FIGURE 3 shows the primary views of the components of a swivel head. The complete list of parts is as follows:

ITEM DESCRIPTION QUANTITY

1 Base 1

2 Swivel head 1

3 Bush 1

4 Shaft 1

5 Collar 1

6 Pin 1

7 Washer 1

8 M16 Hexagonal nut (not shown) 1

3.1 Draw as an assembly drawing, to scale 1 : 1, a full-sectional front view of the

assembly.

(28) 3.2 Insert item numbers only on the assembly drawing. (2)

(8090283) -7- T530(E)(M29)T


FIGURE 3 [30]

(8090283) -8- T530(E)(M29)T


QUESTION 4: DETAILED DRAWING FIGURE 4 shows two primary views of a roller-jack assembly. Draw, to scale 1 : 1 and in FIRST-ANGLE ORTHOGRAPHIC PROJECTION, detailed drawings of the following items:

4.1 The roller-jack body (Item 1) showing the following view:

A full-sectional front view

(6) 4.2 The roller cradle (Item 2) showing the following views: 4.2.1 A full- sectional front view (8) 4.2.2 A full- sectional left view (6) NO hidden detail is necessary.

(8090283) -9- T530(E)(M29)T


FIGURE 4 [20]

(8090283) -10- T530(E)(M29)T


QUESTION 5: ISOMETRIC PROJECTION FIGURE 5 shows the primary views of a component. Construct an isometric scale and then draw an isometric projection of the component. NO hidden detail is necessary.

FIGURE 5 [15] TOTAL: 100



APRIL EXAMINATION


29 MARCH 2016

This marking guideline consists of 6 pages.

MARKING GUIDELINE

MARKING GUIDELINE -2- T530(E)(M29)T ENGINEERING DRAWING N3


QUESTION 1

[10]



QUESTION 2

[25]



QUESTION 3

[30]



QUESTION 4

[20]


Copyright reserved

QUESTION 5

[15] TOTAL: 100


T540(E)(J31)T

AUGUST EXAMINATION



(8090283)

31 JULY 2015 (Y-Paper) 13:00–17:00

REQUIREMENT: 1 A2 drawing sheet

This question paper consists of 11 pages and 1 A3 prepared sheet

(8090283) -2- T540(E)(J31)T





1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.

Answer ALL the questions. Read ALL the questions carefully. Number the answers according to the numbering system used in this question paper. Use both sides of the drawing sheet. A 15 mm border must be drawn on both sides of the drawing sheet. ALL drawing work including candidate information must be done in pencil. A radius curve stencil may be used to draw smaller arcs. Unspecified radii must be R3. A balanced layout is very important and candidates will be penalised for poor planning. ALL drawing work must conform to the latest SANS 10111 Code of Practice for Engineering Drawing. Work neatly.

(8090283) -3- T540(E)(J31)T


MARK ALLOCATION

QUESTION 1: FREEHAND DRAWING (10)

Correctness 5

Line work 2



QUESTION 2: SECTIONAL DRAWING (25)

2.1 Correctness – Full-sectional front view 5

2.2 Correctness – Full-sectional top view 6

2.3 Correctness – Full-sectional left view 6

Line work 3

Accuracy 3


QUESTION 3: ASSEMBLY DRAWING (30)

3.1 Correctness – assembly of components, full-sectional drawing 18

Line work 5

Accuracy 5


QUESTION 4: DETAIL DRAWING (20)


4.1.2 Correctness – Top view (Item 1) 4

4.2.1 Correctness – Half-sectional front view (Item 2) 3




QUESTION 5: PERSPECTIVE DRAWING (15)

Correctness 6

Line work 3

Accuracy 3

SP + LVP + RVP 3

TOTAL 100

(8090283) -4- T540(E)(J31)T


QUESTION 1: FREEHAND DRAWING Figure 1 shows a full-sectional front view of a pulley assembly. Make a freehand drawing of the given view, approximately full size.

FIGURE 1

[10]

(8090283) -5- T540(E)(J31)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 (8) 2.2 A full-sectional top view on cutting plane Y–Y (8) 2.3 A full-sectional left view on cutting plane Z–Z (9)

(8090283) -6- T540(E)(J31)T


[25]

(8090283) -7- T540(E)(J31)T


QUESTION 3: ASSEMBLY DRAWING Figure 3 on the next page shows the primary views of the components of an adjustable support for a lathe. The complete list of parts is as follows:


1 Mounting bracket 1

2 Centre plate 1

3 Holder 1

4 M10 square head bolt 1

5 Washer 1

6 M10 hexagonal nut 1

Draw, as an assembly drawing to scale 2 : 1, a full-sectional front view of the assembly.

(8090283) -8- T540(E)(J31)T


[30]

(8090283) -9- T540(E)(J31)T


QUESTION 4: DETAILED DRAWING Figure 4 on the next page shows a full-sectional front view and a full-sectional top view on cutting plane X–X of a horizontal disc mounting tool. Draw, to scale 1 : 1 and in first-angle orthographic projection, detailed drawings of the following items:

4.1 The mounting bracket (Item 1) showing the following views: 4.1.1 A full front view (8) 4.1.2 A top view (7) 4.2 A half-sectional front view of the mounting disc (Item 2) with the right half in

section

(5) No hidden detail is necessary.

(8090283) -10- T540(E)(J31)T


[20]

(8090283) -11- T540(E)(J31)T

Copyright reserved

QUESTION 5: PERSPECTIVE DRAWING NOTE: THIS QUESTION MUST BE ANSWERED ON THE PREPARED SHEET AND

ATTACHED TO THE DRAWING SHEET.

Use the information shown on the prepared ANSWER SHEET to draw a neat two-point perspective view of the machined block. Point A is situated in line with the centre of vision and up against the picture plane. Line AB vanishes to the right at 30º. The distance of the eye in front of the picture plane is 100 mm.

No hidden detail is necessary. [15]

TOTAL: 100

(8090283) T540(E)(J31)T




AUGUST EXAMINATION


31 JULY 2015


MARKING GUIDELINE

MARKING GUIDELINE -2- T540(E)(J31)T ENGINEERING DRAWING N3


MARK ALLOCATION FOR CORRECTNESS – AUGUST 2015 (This guideline must be used in conjunction with the Marking Guideline)

QUESTION 1 1 mark for each of the areas indicated on the marking guideline = 5 marks QUESTION 2

FSFV 3 marks for correct sectioning = 3 marks ½ mark for each of the unsectioned webs = 1 mark

½ mark for the ø16 unsectioned hole = ½ marks ½ mark for the M16 tapped hole = ½ marks

TOTAL = 5 marks

FSTV ½ mark for correctly sectioning each of the 4 webs = 2 marks ½ mark for each of the 2 unsectioned areas of the webs = 1 mark ½ mark for each unsectioned areas of the base = 2 marks 1 mark all 4 ø10 holes on the base = 1 mark

TOTAL = 6 marks

FSLV 3 marks for correct sectioning of the left view = 3 marks ½ mark for each of the 2 unsectioned webs = 1 mark ½ mark for each of the 2 unsectioned countersunk holes = 1 mark 1 mark the unsectioned ø16 hole = 1 mark

TOTAL = 6 marks QUESTION 3 1 mark for each of items 1 to 6 correctly assembled = 6 marks Item 1: 1 mark for correct sectioning = 1 mark

1 mark for the unsectioned bottom area = 1 mark 1 mark for the unsectioned area on the top left of the item = 1 mark

1 marks for the unsectioned part of the 35 x 10 slot = 1 mark Item 2: Correct sectioning = 2 marks Item 3: Correct sectioning = 2 marks Unsectioned web = 1 mark Unsectioned tapped hole = 1 mark Item 4: Unsectioned bolt = 1 mark Item 5: Unsectioned washer = 1 mark TOTAL = 18 marks



QUESTION 4

FSFV (Item 1) 1 mark correct sectioning on the left of the centre line = 1 mark 1 mark correct sectioning on the right of the centre line = 1 mark 1 marks for the unsectioned protruding portion = 1 mark ½ mark for the each unsectioned web = 1 mark ½ mark for the unsectioned ø18 hole = ½ mark ½ mark for the unsectioned ø4 hole = ½ mark TOTAL = 5 marks

TV (Item 1)

½ mark for each unsectioned protruding portion = 1 mark ½ mark for each circle = 1 mark ½ mark for each unsectioned 10 mm web = 1 mark

½ mark for the unsectioned 6 mm web = ½ mark ½ mark for the 10 x 50 mm area = ½ mark

TOTAL = 4 marks

HSLV (Item 2)

½ mark for correct sectioning = ½ mark ½ mark for the unsectioned ø6 hole = ½ mark ½ mark each for the unsectioned ø24 and ø 16 holes = 1 mark ½ mark for the unsectioned “flange” = ½ mark ½ mark for the unsectioned “flange base” = ½ mark

TOTAL = 3 marks QUESTION 5

See marking guideline for allocation of marks = 6 marks



QUESTION 1

[10]



QUESTION 2

[25]



QUESTION 3 (This answer to be replaced by corrected answer- arrangements have been made with internal moderator/examiner to make changes and to print hardcopies. The external moderator will collect them from newcastle and courier to umalusi to forward to dhet)

[30]



QUESTION 4 (THE ANSWER TO BE REPLACED WITH ENGLISH VERSION OF MARK ALLOCATION - ARRANGEMENTS HAVE BEEN MADE WITH INTERNAL MODERATOR/EXAMINER TO MAKE CHANGES AND TO PRINT HARDCOPIES. THE EXTERNAL MODERATOR WILL COLLECT THEM FROM NEWCASTLE AND COURIER TO UMALUSI TO FORWARD TO DHET)

[20]


Copyright reserved

QUESTION 5

TOTAL: [15]

100


T540(E)(A15)T

APRIL EXAMINATION



(8090283)

15 April 2015 (Y-Paper) 13:00–17:00


(8090283) -2- T540(E)(A15)T






Answer ALL the questions. Read ALL the questions carefully. Number the answers according to the numbering system used in this question paper. Use both sides of the drawing sheet. A 15 mm border must be drawn on both sides of the drawing sheet. ALL drawing work including candidate information must be done in pencil. A radius curve stencil may be used to draw smaller arcs. Unspecified radii must be R3. A balanced layout is very important and candidates will be penalised for poor planning. ALL drawing work must conform to the latest SANS 10111 Code of Practice for Engineering Drawing. Write neatly and legibly.

(8090283) -3- T540(E)(A15)T


MARK ALLOCATION


Correctness 5

Line work 2




2.1 Correctness – Full sectional front view 8

2.2 Correctness – Full sectional right view 7

Line work – 2 marks per view 4

Accuracy – 2 marks per view 4



3.1 Correctness – assembly of components, full sectional drawing 16

Line work 5

Accuracy 5

Title and scale 2


QUESTION 4: DETAIL DRAWING [20]

4.1.1 Correctness – Front view (Item 1) 4

4.1.2 Correctness – Top view (Item 1) 6





QUESTION 5: PERSPECTIVE DRAWING [15]

Correctness 8

Line work 2

Accuracy 2

Isometric projection 2


TOTAL 100

(8090283) -4- T540(E)(A15)T


QUESTION 1: FREEHAND DRAWING FIGURE 1 shows an isometric view of a component. Make a freehand drawing of the given view, approximately full size.

FIGURE 1 [10]

(8090283) -5- T540(E)(A15)T


QUESTION 2: SECTIONAL DRAWING FIGURE 2 shows two primary views of a component. Draw, to scale 1 : 1 and in third-angle orthographic projection, the following views of the component:

2.1 A full sectional front view (13) 2.2 A full sectional right view (12)

PASTE FIGURE 2 FIGURE 2 [25]

(8090283) -6- T540(E)(A15)T


QUESTION 3: ASSEMBLY DRAWING FIGURE 3 shows the primary views of the components of a flange coupling. The complete list of parts is as follows:


1 Flange 1

2 Flange 1

3 Bush 1

4 Driving shaft 1

5 Driven shaft 1

6 M8 hexagon head bolt 6

7 M8 hexagonal nut 6

1.1 Draw, as an assembly drawing to scale 1 : 1, a full sectional front view of the

assembly.

(28) 1.2 Insert a suitable title and scale centrally below the assembly. (2)

(8090283) -7- T540(E)(A15)T



(8090283) -8- T540(E)(A15)T


QUESTION 4: DETAILED DRAWING FIGURE 4 shows two primary views of a rotating table jig. Draw, to scale 1 : 2 and in first-angle orthographic projection, detailed drawings of the following items:

4.1 The base (Item 1) showing the following views: 4.1.1 A front view (7) 4.1.2 A top view (8) 4.2 The spindle (Item 2) showing the following views: 4.2.1 A front view (5) No hidden detail is necessary.

(8090283) -9- T540(E)(A15)T


PASTE FIGURE 4

FIGURE 4 [20]

(8090283) -10- T540(E)(A15)T


QUESTION 5: ISOMETRIC PROJECTION FIGURE 5 shows the primary views of a geometric model. Construct an isometric scale and then draw an isometric projection of the model. Make 'P' the lowest point. No hidden detail is necessary.

PASTE FIGURE 5

FIGURE 5 [15]

TOTAL: 100



BACKUP EXAMINATION


BACKUP 2014


MARKING GUIDELINE

MARKING GUIDELINE -2- T560(E)(BU)T ENGINEERING DRAWING N3



T560(E)(N27)T

NOVEMBER EXAMINATION



(8090283)

27 November 2014 (Y-Paper) 13:00–17:00

REQUIREMENTS: One A2 drawing paper

This question paper consists of 9 pages and 1 addendum.

(8090283) -2- T560(E)(N27)T






Answer ALL the questions. Read ALL the questions carefully. Number the answers correctly according to the numbering system used in this question paper. Use both sides of the drawing sheet. A 15 mm border must be drawn on both sides of the drawing sheet. ALL drawing work including candidate information must be done in pencil. A radius curve stencil may be used to draw smaller arcs. Unspecified radii must be R3. A balanced layout is very important and candidates will be penalised for poor planning. ALL drawing work must conform to the latest SANS 10111 Code of Practice for Engineering Drawing. Write neatly and legibly.

(8090283) -3- T560(E)(N27)T


MARK ALLOCATION


Correctness 5

Line work 2

Accuracy & Proportion 2




2.2 Correctness – Full sectional right view 7

Linework – 2 marks per view 4




3.1 Correctness – assembly of components, full sectional drawing 18

Line work 5

Accuracy 5


QUESTION 4: DETAIL DRAWING [20]

4.1.1 Correctness – Full sectional front view (Item 1) 5



Linework – 1 mark per view 3



QUESTION 5: PERSPECTIVE DRAWING [15]

Correctness 6

Linework 3

Accuracy 3

SP + LVP + RVP 3

TOTAL 100

(8090283) -4- T560(E)(N27)T


QUESTION 1: FREE HAND DRAWING

FIGURE 1 shows a full sectional front view of a component. Make a freehand drawing of the given view, approximately full size.

FIGURE 1 [10]

(8090283) -5- T560(E)(N27)T


QUESTION 2: SECTIONAL DRAWING FIGURE 2 shows two primary views of a component. Draw, to scale 1 : 1 and in third-angle orthographic projection, the following views of the component:

2.1 A full sectional front view (13) 2.2 A full sectional right view on cutting plane X-X (12)

FIGURE 2 [25]

(8090283) -6- T560(E)(N27)T


QUESTION 3: ASSEMBLY DRAWING FIGURE 3 shows the primary views of the components of a drive shaft connector. The complete list of parts is as follows:


1 Left fork end 1

2 Centre piece 1

3 Right fork end 1

4 Left drive shaft 1

5 Right drive shaft 1

6 Pin 2

7 Collar 2

8 Pin 2

Draw as an assembly drawing, to scale 1 : 1, a full sectional front view of the assembly.

(8090283) -7- T560(E)(N27)T



(8090283) -8- T560(E)(N27)T


QUESTION 4: DETAILED DRAWING FIGURE 4 shows the front view of a cone clutch assembly. Draw, to scale 1 : 1 and in first-angle orthographic projection, detailed drawings of the following items:

4.1 The driving drum (Item 1) showing the following view: 4.1.1 A full sectional front view (7)

4.2 The driven drum (Item 2) showing the following view: 4.2.1 A full sectional front view (8) 4.3 The drive shaft (Item 3) showing the following view: 4.3.1 A front view (5) No hidden detail is necessary.

FIGURE 4 [20]

(8090283) -9- T560(E)(N27)T


QUESTION 5: PERSPECTIVE DRAWING NOTE:

THIS QUESTION MUST BE ANSWERED ON THE PREPARED A3 ANSWER SHEET AND ATTACHED TO THE DRAWING PAPER.

Use the information shown on the prepared A3 ANSWER SHEET to draw a neat two-point perspective view of the machined block. Point A is situated in line with the centre of vision and up against the picture plane. Line AB vanishes to the left at 60°. The distance of the eye in front of the picture plane is 120 mm. No hidden detail is necessary.

[15]

TOTAL: 100

(8090283) -10- T560(E)(N27)T


ADDENDUM



NOVEMBER EXAMINATION


27 NOVEMBER 2014


MARKING GUIDELINE

MARKING GUIDELINE -2- T520(E)(N27)T ENGINEERING DRAWING N3



T520(E)(A6)T AUGUST EXAMINATION



(8090283)

6 August 2014 (Y-Paper) 13:00–17:00


(8090283) -2- T520(E)(A6)T






Answer ALL the questions. Read ALL the questions carefully. Number the answers according to the numbering system used in this question paper. Use BOTH sides of the drawing sheet. A 15 mm border must be drawn on both sides of the drawing sheet. ALL drawing work including candidate information must be done in pencil. A radius curve stencil may be used to draw smaller arcs. Unspecified radii must be R3. A balanced layout is very important and candidates will be penalised for poor planning. ALL drawing work must conform to the latest SANS 10111 Code of Practice for Engineering Drawing. Write neatly and legibly.

(8090283) -3- T520(E)(A6)T


MARK ALLOCATION


Correctness 5

Line work 2





2.2 Correctness – Full sectional left view 7





Correctness – assembly of components, full sectional drawing 18

Line work 5

Accuracy 5




4.1.2 Correctness – Left view (Item 1) 4

4.2.1 Correctness – Front view ( Item 2) 4





Correctness 8

Line work 2

Accuracy 2



TOTAL: 100

(8090283) -4- T520(E)(A6)T


QUESTION 1: FREEHAND DRAWING Figure 1 shows an isometric view of a component. Make a freehand drawing of the given view, approximately full size.

FIGURE 1

[10]

(8090283) -5- 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)

FIGURE 2 [25]

(8090283) -6- T520(E)(A6)T


QUESTION 3: ASSEMBLY DRAWING Figure 3 on the next page shows the primary views of the components of a tension pulley assembly. The complete list of parts is as follows:


1 Mounting frame 1

2 Wheel 1

3 Bush 1

4 Collar 1

5 Collar 1

6 Shaft 1

7 Washer 1

8 M18 hexagonal nut (not shown) 1

Draw, as an assembly drawing to scale 1 : 1, a half-sectional front view of the assembly with the top half in section.

No hidden detail is necessary.

(8090283) -7- T520(E)(A6)T


[30]

(8090283) -8- T520(E)(A6)T


QUESTION 4: DETAILED DRAWING Figure 4 on the next page shows two primary views of a link mechanism assembly. Draw, to scale 1 : 1 and in first-angle orthographic projection, detailed drawings of the following views:

4.1 The frame (Item 1) showing the following views: 4.1.1 A full sectional front view (7)

4.1.2 A left view (6) 4.2 The shaft (Item 2) showing the following view: 4.2.1 A front view (7) No hidden detail is necessary.

(8090283) -9- T520(E)(A6)T


FIGURE 4

[20]

(8090283) -10- T520(E)(A6)T


QUESTION 5: ISOMETRIC PROJECTION Figure 5 shows the primary views of a geometric model.

Construct an isometric scale and then draw an isometric projection of the model.

No hidden detail is necessary. [15]

TOTAL: 100



AUGUST EXAMINATION


6 AUGUST 2014


MARKING GUIDELINE

MARKING GUIDELINE -2- T520(E)(A6)T ENGINEERING DRAWING N3


QUESTION 1 [10]



QUESTION 2 [25]



QUESTION 3 [30]

MARK ALLOCATION CORRECTNESS 18% LINE WORK 5% ACCURACY 5% LAYOUT AND NEATNESS 2% TOTAL 30%



QUESTION 4 [20]



QUESTION 5

TOTAL:

[15] 100



MARK ALLOCATION


Correctness 5

Line work 2





2.2 Correctness – Full sectional left view 7





Correctness – assembly of components, full sectional drawing 18

Line work 5

Accuracy 5




4.1.2 Correctness – Left view (Item 1) 4

4.2.1 Correctness – Front view ( Item 2) 4





Correctness 8

Line work 2

Accuracy 2



TOTAL: 100

-2-

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