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CAMBRIDGE INTERNATIONAL EXAMINATIONS
General Certificate of Education Advanced Level
GEOMETRICAL AND MECHANICAL DRAWING
PAPER 1
9351/1
MAY/JUNE SESSION 2002
3 hours
Additional materials:
A2 Drawing paper (4 sheets)
Standard Drawing Equipment
TIME
3 hours
INSTRUCTIONS TO CANDIDATES
Print your name, Centre number and candidate number at the bottom right-hand corner of every sheet
of paper you use.
Answer all questions from Section I and any three questions from Section II.
Write or draw your answers on the separate drawing paper provided.
Work all your answers in SI units. Use both sides of the drawing paper.
All solutions are to be drawn full-size unless a contrary instruction is given. Construction lines must be
shown clearly.
If you use more than one sheet of paper, fasten the sheets together.
INFORMATION FOR CANDIDATES
The number of marks is given in brackets [ ] at the end of each question or part question.
The diagrams are not necessarily drawn to scale.
All dimensions are in millimetres unless otherwise stated.
You are reminded of the need for clear presentation in your answers.
This question paper consists of 10 printed pages and 2 blank pages.
MML 1293 3/01 S12781
© CIE 2002
http://www.xtremepapers.net
UNIVERSITY of CAMBRIDGE
Local Examinations Syndicate
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Section I (40 marks)
Answer all questions in this section.
1
A sketch of an ‘up and over’ garage door is shown with the door partially open in Fig. 1a. The line
drawing, Fig. 1b, shows the garage door in the fully closed position.
As the door opens, the top of the door a, moves from A to A1, while the bottom of the door b,
swings upwards from B to B1. The stay CD pivots on the garage wall at C and the edge of the
door at D.
[3]
(b) Construct the locus of the bottom of the door as it opens from B to B1.
[5]
A
B1
A1
1800
A
900
a
C
D
900
C
2400
A1
(a) Draw Fig. 1b to a scale of 1:20.
b
D
B
B
Fig. 1a
Fig. 1b
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B1
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3
Orthographic views of an open-topped elliptical box are given in Fig. 2.
(a) Draw the given views full size.
[3]
(b) Construct the development of the curved side of the box.
[5]
ELLIPSE
MAJOR AXIS
MINOR AXIS
80
50
30˚
70
2
Fig. 2
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3
A children’s paddling pool and shelter are built on an irregularly shaped site. The sketch, Fig. 3a,
gives an impression of the site and a dimensioned plan view of it is given in Fig. 3b.
Construct a scale 1:200 plan view of the site, pool and shelter.
[12]
Fig. 3a
REGULAR
PENTAGON
CIRCUMSCRIBING
A CIRCLE DIAMETER
9 METRES
E
REGULAR
HEPTAGON
D
A
B
C
Fig. 3b
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AB = 14 m
BC = 22 m
CD = 15 m
EA = 15 m
AC = 30 m
BD = 25 m
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5
A view of a flanged elbow pipe is given in Fig. 4.
(a) Draw the given view full size.
[3]
(b) Project, in third angle orthographic projection, the sectional view SS. Hidden detail is not
required.
[9]
Ø1
20
S
0
R6
20
40
60˚
20
4
S
Ø50
20
Ø80
Fig. 4
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Section II (60 marks)
Attempt no more than three questions from this section.
All questions carry equal marks.
Orthographic views of the case of a clock are given in Fig. 5.
Construct an isometric view of the clock case with the corner C to the front of your drawing.
The isometric scale must be used.
All construction lines must be seen clearly.
[20]
100
5
50
Ø72
45
42
R150
125
R150
C
C
20
5
R20
40
10
55
Fig. 5
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80
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7
Fig. 6 shows a section of a dam.
(a) Draw the given section to a scale of 1:500. Do not draw the section shading.
[5]
(b) Using a graphical integration method, determine the area of the section of the dam.
[15]
7.5 m 5 m
PARABOLIC
CURVE
10 m
17.5 m
5m
70 m
6
50 m
Fig. 6
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7
A pictorial view of a dovetailed guide is shown in Fig. 7. A scrap view showing the true size and
shape of the dovetailed slot is also given.
(a) Draw, full size, the orthographic view of the dovetailed guide looking in the direction of the
arrow SV.
[1]
(b) Project a first auxiliary view of the dovetailed guide selected to show the true shape of
surface A.
[9]
(c) Project a second auxiliary view showing the true angles of the dovetailed slot.
[10]
Hidden detail is required in all three views.
20
10
12
50˚
60˚
60˚
A
90˚
SCRAP VIEW SHOWING
TRUE SECTION OF
DOVETAIL SLOT
30˚
80
25
15
60
15
6
90
SV
Fig. 7
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VIEWS NOT DRAWN
TO SCALE
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8
Fig. 8 shows a beam simply supported as shown. There are two uniformly distributed loads and
one concentrated load as indicated.
(a) Draw the given diagram to a scale of 1:100.
[1]
(b) Determine graphically the magnitude of the reactions RL and RR. Use a polar distance
of 50 mm.
[6]
(c) Construct a shear force diagram for the beam. Use a scale of 10 mm = 10 kN. Indicate
positions of zero shear force.
[6]
(d) Construct the bending moment diagram for the beam on a horizontal base. Give the
magnitude and position of the maximum bending moment.
[7]
Your answers to (b), (c) and (d) must be shown clearly on or adjacent to your drawing.
25 kN / METRE
15 kN / METRE
20 kN
4
5
4
RL
3
RR
ALL DIMENSIONS
IN METRES
Fig. 8
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9
Part of the lens carrier of a film projector consists of a metal tube 62 mm long, with an outside
diameter 50 mm and an inside diameter 32 mm.
In order to adjust the lens, there is a stopped helical groove centrally positioned on the outside
of the tube. The groove, which has semicircular ends, is rectangular in section, 6 mm wide,
3 mm deep, has a pitch of 36 mm and makes one complete right-hand turn of the tube.
Draw, twice full size, a longitudinal view of the tube showing the groove starting and stopping on
the horizontal centre line.
Hidden detail is required.
[20]
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BLANK PAGE
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