Caribbean Examinations Council
Technical Drawing
Macmillan Education 4 Crinan Street, London, N1 9XW A division of Macmillan Publishers Limited Companies and representatives throughout the world www.macmillan-caribbean.com ISBN 978-0-230-48182-4 AER
© Caribbean Examinations Council (CXC ®) 2015 2015 www.cxc.org www.cxc-store.com The author has asserted their right to be id entified as the author of this work in accordance with the Copyright, Design and Patents Act 1988. First published 2014 This revised edition published 2015 All rights reserved; no part of this publication may be reproduced, stored in a retrieval system, transmitted in any form, or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publishers. Designed by Macmillan Publishers Limited Cover design by Macmillan Publishers Limited and Red Giraffe Cover photograph © Caribbean Examinations Council (CXC ®) Cover photograph by Mrs Alberta Henry With thanks to the students of the Sir Arthur Lewis Community College, St Lucia: Kellian C harles
Macmillan Education 4 Crinan Street, London, N1 9XW A division of Macmillan Publishers Limited Companies and representatives throughout the world www.macmillan-caribbean.com ISBN 978-0-230-48182-4 AER
© Caribbean Examinations Council (CXC ®) 2015 2015 www.cxc.org www.cxc-store.com The author has asserted their right to be id entified as the author of this work in accordance with the Copyright, Design and Patents Act 1988. First published 2014 This revised edition published 2015 All rights reserved; no part of this publication may be reproduced, stored in a retrieval system, transmitted in any form, or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publishers. Designed by Macmillan Publishers Limited Cover design by Macmillan Publishers Limited and Red Giraffe Cover photograph © Caribbean Examinations Council (CXC ®) Cover photograph by Mrs Alberta Henry With thanks to the students of the Sir Arthur Lewis Community College, St Lucia: Kellian C harles
CSEC® Technical Drawing Past Papers List of Contents:
Paper 02 (May 2005)
4
Paper 03/1 (May 2005)
11
Paper 03/2 (May 2005)
18
Paper 02 (May 2006)
26
Paper 03/1 (May 2006)
32
Paper 03/2 (May 2006)
38
Paper 02 (May 2007)
44
Paper 03/1 (May 2007)
52
Paper 03/2 (May 2007)
58
Paper 02 (May 2008)
64
Paper 03/1 (May 2008)
71
Paper 03/2 (May 2008)
76
Paper 02 (May 2009)
82
Paper 03/1 (May 2009)
89
Paper 03/2 (May 2009)
97
Paper 02 (May 2010)
103
Paper 03/1 (May 2010)
110
Paper 03/2 (May 2010)
115
Paper 02 (May 2011)
121
Paper 03/1 (May 2011)
127
Paper 03/2 (May 2011)
133
Paper 02 (May 2012)
139
Paper 03/1 (May 2012)
147
Paper 03/2 (May 2012)
153
Paper 02 (May 2013)
159
Paper 03/1 (May 2013)
167
Paper 03/2 (May 2013)
173
Paper 02 (May 2014)
179
Paper 03/1 (May 2014)
187
Paper 03/2 (May 2014)
195
Paper 03/2 May 2011
144
Paper 02 May 2012
150
Paper 03/1 May 2012
158
Paper 03/2 May 2012
164
Paper 02 May 2013
170
Paper 03/1 May 2013
178
Paper 03/2 May 2013
184
Paper 02 May 2014
190
Paper 03/1 May 2014
198
Paper 03/2 May 2014
206
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2
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Answer FOUR questions, TWO from Section I (Plane Geometry) and TWO from Section II (Solid Geometry). Each question is worth 20 marks. SECTION I - PLANE GEOMETRY GEOMETRY Answer TWO questions from this section. 1.
Figure Figu re 1 represents represents the shape shape o f a template o f a 5-point figure.
D
E-
C
A
B
Figure 1 Copy the figure showing the constructi on method for obtaining the FI VE points A, B, B, C, D and E. AB = BC = CD = DE = EA = 40 mm
2.
(20 m ark s)
(a)
Construct a triangle triangle on ab as e of 100 100 mm and base angles of 75° and 45°.
(b)
Inscribe the LARGEST possible square within the triangle with one side of the square lying on the base of the triangle. triangle. (20 m arks )
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3
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3.
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Figu Fi gu re 2 shows the outline of a template. (a)
Draw, FXJL FXJLL L SIZE, the outline of the template.
(b)
Show clearly the methods used for establishing the tangents. Indicate ALL points of tangency. tangency. (20 ma rks )
R25
30° tn
«>
R 12 12
R30 R 18 18 50
DIM. IN MM.
Figure 2
4.
Construct an Archimedian Archimedi an spiral of TWO convolutions with the LONGEST radius at 80 mm. (20 marks)
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4
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SECTION II II - SOLID GEOMETRY GEOMETRY Answer TWO questions from this section.
5.
Figure 3 shows the development of the sides of a right square pyramid, pyramid, which is cut at its lower end.
■A ❖ /
&
&
% B
A
£ C
'S
D
[A Figure 3
Draw, FULL SIZE, the (a)
given development
(b)
completed plan and elevation (with DC as the base).
(20 marks)
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6.
5
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Fig ure 4 shows two orthographic views of a machined block and a reference line XX at 60° to the horizontal.
X
c V
o
50 ELEVATION o
60°
o
sc
X DIM. IN MM.
20
10 PLAN
Figure 4 Using a scale of 1:1, draw the following: (a)
The given views
(b)
An auxiliary elevation on the reference line XX
(20 mar ks)
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7.
6
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Figure 5 shows two orthographic view s o f a square prism interpenetrating a cylinder.
o
00
SQ 50 yc
DIM. IN MM.
110
05 0
Figure 5 Draw, FU LL SIZE, the following: (a)
The given plan view
(b)
The complete elevation showing the curve o f interpenetration (20 marks)
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8.
7
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Fi gu re 6 shows two orthographic views of a machined block in first-angle projection.
s 10 U Ì
r© O'
H,
X
100
X
ITi
fN
DIM. IN MM.
eQC
O
X
X
Figure 6 Using a scale of 1:1, draw an oblique projection with X-X as the LOWEST line. (20 marks)
END OF TEST
01247020/F 2005
0 / i o o 0 )
5 2 6 4
0 5 9 2
A
5 2 8 5
. S N . A T . L N P T U O Y A L R O O L F
A E R A G N I N I D A E R A G N I V I L
H C R O P
/
5 2 7 3
N E H C T I K
2 E R U G I F
5 7 4 5
§
5 7 1 1
i D r S I
r r
" X "
5 0 0 2 F / 1 3 0 7 4 2 1 0
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4
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Sketch and Design OR 3D Solid Model Design Drawing Answer ONE question from this section. 3.
Make neat, well-proportioned, sectional orthographic sketches to illustrate any THREE of the following types of sections: (i) (ii) (iii) (iv) (v)
4.
Ha lf (two views required) Local (one view required) Off-se t (two views required) Revolved (one view required) Aligned (two views required)
(20 m ark s)
Figure 3 shows the body of a wheel cylinder which is used in the braking system of a car. 6 4 6
6 4 15
6
15
o
a r*> « «
A
M8 Anchor
o
l/J «1
M6 Bleeding nipple
« ri
22
Figure 3
Make a neat isometric sketch, of good proportion, of the wheel cylinder body with the point A bei ng the LO WE ST poi nt o f the sketch. (20 marks) END OF TEST 01247032/F 2005
3-holes M4 lOmin. Full threacP
RIO
(1)
( 6 )
BO DY 1 off. MS
T O M M Y B A R I o ff MS
2 chamber at 45°
(7)
01247032/F 2005
ADJUST ING SCREW 1 off MS
M4 10 min length full thread
(2) MOVING JAW 1 off MS
3-holes 04 c'sunk 010
(3) FIXED JAW PLATE 1 off MS
3-holes 04 c'sunk 010
4)
(5)
MOVING JAW PLATE 1 off MS
C'SUNK SCREW 6 off MS
Unspecified radii to be R5
MACHINE VICE ASSEMBLY All dimensions in mm
Figure 1
2-s'face 024
2- mlO
throu.
(1) BASE C.I.
M12 24 min. length full thread
2- M 8,16 min. length full thread
(3) REST C.I. 01247032/F 2005
2 holes 010 C'bore 024 x 4 deep
(2) BOBY C.L
All fillet radii to be R3 Also required to complete the assembly: (i) (ii)
one M12 Hexagonal head bolt and plain washer two M10 Hexagonal head bolt and plain washers
GRINDING ATTACHMENT ASSEMBLY All dimensions in mm
Figure 2
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3
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3.
Using the focus method, draw the curve of a hyperbola with the eccentricity of 5:3. The distance from its vertex to its focal point is 25 mm and from vertex to directrix is 15 mm. (20 marks)
4.
Figure 2 shows the line ABC at an angle of 45° to the horizo ntal at B and a circle, centre O, to uching the line ABC at point P.
V i circumference
DIM. IN MM
Figure 2
(a)
Copy, FUL L SIZE, the given view.
(b)
Plot the locus of point P when the circle, centre O, makes one complete revolution along the line ABC.
(20 marks)
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4
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SECTION II (SOLID GEOMETRY) Answer TWO questions from this section.
5.
Fi gure 3 shows a plan and elevation of a right square pyramid cut by a plane DD at 60° to the horizontal.
ELEVATION
DIM. IN MM
PLAN
Figure 3
Draw, FULL SIZE, the following views:
(a)
The given plan
(b)
The given elevation
(c)
The development with S-S as the seam
(20 marks)
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6.
5
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Figure 4 shows two orthographic views o f a machined block and a reference line XY at45° to the horizontal.
ELEVATION
PLAN Figure 4 Using a scale of 1 : 1, draw the following:
(a)
The given views
(b)
An auxiliary elevation on the reference line XY
(20 marks)
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7.
6
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Figure 5 shows two orthographic views of a block.
2 HOLES 0 8 X 15 DEEP
RIO
DIM. IN MM
Figure 5 Using the cabinet or cavalier method, draw an oblique projection of the block. STATE the method used. Omit ALL hidden detail lines.
.
8
(20 marks)
A right-hand helical spring is made from a steel bar having a circular cross-section with diameter 10 mm. The outside diameter o f the spring is 70 mm. The pitch of the coils is 50 mm. Draw TWO convolutions of the spring. Show ALL relevant constructions employed. Hidden details are NOT required.
(20 marks)
END OF TEST
01247020/F 2006
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4.
4
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Figure 3 shows the elevation and plan of a lathe tool holder. Draw, in isometric projection, the lathe tool holder with ‘S’ as its LOWEST point. OMIT the four M8 slotted grub screws and tapped holes.
M10 SLOTTED GRUB SCREW 4-M8 SLOTTED GRUB SCREWS
LATHE TOOL HOLDER Figure 3 (20 marks)
END OF TEST
01247032/F 2006
W E R C S
T U N . X E H
R E H S A W
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N A L P
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T U N . X E H 6 1 M
R E H S A W
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6 0 0 2 F / 2 3 0 7 4 2 1 0
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2
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This paper has TWO sections: Section I, Plane Geometry and Section II, Solid Geometry. Answer FOUR questions questions,, TW O from Section I (Plane (Plane Geometry) and TW O from Section Section II (Solid Geometry). Each question is worth 20 marks. SECTION SECTION I - PLANE PLANE GEOM ETRY Answer TWO TW O questions questions from this this section section..
1
.
Figure 1 Figure 1 above shows an irregular polygon with AB = 40 mm, BC = 30 mm, AE = 20 mm, ED = 50 mm and CD = 27 mm. (a)
Construct Construct the the figure using COMPASSES COMPASS ES and RULE ONLY.
(b)
Determine the area o f the figure figur e in mm graphically. graphicall y.
(c) (c )
State the area o f the figure. figure . (20 marks)
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3
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2.
Figure 2 Figure 2 above shows the outline for a light bulb. (a)
Reproduce the the figure figur e showing showin g clearly clea rly the the construction methods used for fo r obtaining the centre o f the arcs required.
(b)
Identif y clearly, the method o f obtaining all points points o f tangency. tangency. (20 marks)
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