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Metalwork - Exam Papers - HL - Paper - 2003
INSTRUCTIONS
1. Answer Question 1, Sections A and B and three
other questions.
2. All answers must be written in ink on the answer book supplied.
Diagrams should be drawn in pencil.
3. Squared paper is supplied for diagrams as required.
4. Please label and number carefully each question attempted.
SECTION A - 20 MARKS
COMPULSORY
Answer any five questions
| (a) |
Briefly describe, the contribution made
to technology by one of the following people:
Thomas Edison,
Charles Parsons,
John Logic Baird. |
| (b) |
The diagram shows some of the main parts
of a single cylinder engine. Name Part 'A', and explain
its purpose. |
| (c) |
(i) |
What fuel is suitable for the engine? |
| (ii) |
What is the purpose of the Gudgeon Pin, Part
-B'? |
| (d) |
Describe the movement of Part 'C' when
the piston moves up and down. |
| (e) |
(i) |
What is the purpose of the fins? |
| (ii) |
Give two uses of single cylinder engines. |
| (f) |
Define any two of the following:
Thermosetting plastic,
Pilot hole,
Ferrous metal. |
| (g) |
Name and identify by number, the four electronic components labelled in the circuit. |
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SECTION B - 20 MARKS
COMPULSORY
Answer any five questions
| The drawing shows an elevation, and front and rear
details, of the 2003 Metalwork Higher Level Project
- a Model Aircraft. |
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| (a) |
The Propeller, Part 10, is driven by
a motor, controlled by a switch, and powered by
a battery. Using the correct symbols, draw a circuit
diagram of the power control components of the Model
Aircraft. |
| (b) |
Describe two stages in the manufacture
of Part '8', the Wheel. |
| (c) |
Sketch a suitable design for an Undercarriage
for the plane, and describe its main components. |
| (d) |
Describe how the Windshield Part '6'
made from acrylic, is bent to shape. |
| (e) |
(i) |
Sketch the development of the Wing Support.
Part '7' before it is bent to shape. |
| (ii) |
Briefly describe how Part '7' is attached
to the Fuselage and the Wing. |
| (f) |
In a full-size single engine aircraft,
what is the purpose of either: |
| (i) |
the Undercarriage,
or |
| (ii) |
the Tail Fin ? |
|
| (a) |
A simple model of a design process
is shown. List any two important points
which should be considered at the "materials
selection" stage. |
| (b) |
List two important points
to be considered at the "produce drawing for
making" stage. |
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| (c) |
A design of a Garden Truck is shown. |
| (i) |
Draw an elevation of the Truck, looking
in the direction of arrow 'X'. |
| (ii) |
Briefly describe two improvements
that could be made to the design of the Truck.
Use sketches if necessary. |
| (iii) |
Briefly describe a mechanism that would
al!ow the front axle to turn for steering. |
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| (a) |
State two reasons why
drilling machines are designed to run at
different speeds (RPM). |
| (b) |
An aluminium plate is to have
two holes drilled in the positions as shown.
Briefly describe: |
| (i) |
how the positions of the two holes
would be marked out. |
| (ii) |
the steps required to drill the
two holes accurately and safely. |
| (c) |
A 15mm diameter bar is to be
turned on a lathe. If the material has a
surface cutting speed of 45 m/min, what
speed in RPM, should the lathe be set at.
Use the given formula.
(Take π as 3)
N = (S x 1000) / π x D)
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| (d) |
Explain, with the aid of sketches,
the purpose of: |
| (i) |
a depth gauge,
and |
| (ii) |
a taper tap. |
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| (a) |
Name the type of furnace shown. |
| (b) |
Name the metal produced by the
process. |
| (c) |
List the materials in the charge. |
| (d) |
Explain the purpose of Part
'A'. |
| (e) |
When the furnace is being emptied,
what material is: |
| (i) |
removed at 'B',
and |
| (ii) |
removed at 'C'? |
| (f) |
Explain how the charge is heated
or melted. |
| (g) |
(i) |
List any three non-ferrous
metals. |
| (ii) |
Define any two of the following:
Malleability,
Hardness,
Ductility,
Brittleness,
Elasticity. |
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A diagram of an All Terrain Vehicle (ATV)
is shown. The rear wheels are driven by
an engine.
| (a) |
Name suitable materials for
Parts 'A', 'B', and 'C', and give reasons
for your choice. |
| (b) |
(i) |
If the driving sprocket has 14 teeth,
and the driven sprocket, attached to the
rear axle, has 28 teeth, what is the gear
ratio involved? |
| (ii) |
If the driving sprocket turns at
2400 RPM, how fast does the rear wheel
turn? |
| (c) |
The handlebars are mounted on
Part 'D'. Show with the aid of a sketch,
how Part 'D' could be locked in position
in Part 'E' to allow handlebars height adjustment. |
| (d) |
List two advantages of
an All Terrain Vehicle (ATV) on a farm. |
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| (a) |
A component is to be soldered
onto a printed circuit board as shown. |
| (i) |
Describe two important steps
to be taken when soldering. |
| (ii) |
Name the two metals used
to make solder. |
| (iii) |
What is the purpose of flux in
soldering? |
| (iv) |
List three safety procedures
that should be observed when soldering.
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| (b) |
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List two properties of
solder that make it suitable for joining
electronic components? |
| (c) |
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Explain two of the following
terms:
Alloy,
Clearance Angle,
Engraving. |
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| (a) |
A Personal Computer (PC) system
is shown. All six items listed in the boxes
may be connected to a PC. State which items
are input and which are output. |
| (b) |
Briefly describe the function
of any four of the six items listed
above. |
| (c) |
Explain the meaning of the following: |
| (i) |
CD Writer, |
| (ii) |
ROM. |
| (iii) |
DOS. |
| (iv) |
Computer Virus. |
| (d) |
List two advantages of
Computer-Aided Manufacture (CAM).
(e) Explain any two of the
following CNC terms: |
| (i) |
Test run. |
| (ii) |
Define a profile. |
| (iii) |
Canned cycle. |
| (iv) |
Program. |
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