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Metalwork - Exam Papers - OL - Paper - 1999
INSTRUCTIONS
1. Answer question 1, sections A and B, and any three other questions.
2. Write your answers in the space provided or tick the appropriate
box.
3. Hand up this paper at the end of the examination.
(a) |
(i) Complete the chart by matching
one of the given materials with each item
:
Metals : Copper, Stainless Steel,
Aluminium, Bronze, Acrylic, PVC, Polyethylene,
Nylon. |
Item |
Material |
Cutlery |
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Cooking Foil |
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Soldering Iron Bit |
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Cast Metal Statues |
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Plastic Gears |
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Plastic Shopping Bags |
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Plastic Windows |
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Plastic Shop Signs |
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(b) |
Complete the chart : |
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(i) |
This furnace produces Cast Iron. |
Yes |
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No |
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(ii) |
This furnace uses a charge that
includes coke and limestone. |
Yes |
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No |
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(iii) |
Oxygen is blown into this furnace. |
Yes |
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No |
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(iv) |
An electric arc melts the metal. |
Yes |
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No |
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(v) |
This furnace can be tilted to
remove the molten metal. |
Yes |
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No |
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(vi) |
Impurities are removed in the
form of slag. |
Yes |
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No |
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(c) |
![](../images/1999/2c1.gif) |
(i) Complete the chart by naming
the parts : |
Part No. |
Name |
1. |
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2. |
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3. |
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4. |
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5. |
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(ii) A computer controlled lathe
is called a : |
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(a) |
(i) Match the number to the
correct mechanism. |
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Mechanism |
No. |
Worm and Wormwheel |
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Cam and Follower |
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Chain and Sprockets |
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Ratchet and Pawl |
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Rack and Pinion |
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Crank and Slider |
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(ii) Which one of these mechanisms
is used in the centre lathe ? |
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(iii) Name another mechanism
that uses one of these mechanisms.
State the number of this mechanism. |
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(b) |
(i) Name any two of the
following mechanisms and give a different
use for each one. |
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Number : |
Name of mechanism : |
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and use : |
Number : |
Name of mechanism : |
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and use : |
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(ii) State the difference
between a lever and a fulcrum. |
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(c) |
Indicate with an arrow the direction
of movement of part 'X' in each box. |
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A drawing of a motorised model aeroplane is shown
below. The electric motor is held in place by a holder.
A development of this holder is shown over. |
![](../images/1999/412.gif) |
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(i) State the steps involved in making the
holder from a blank piece of metal. |
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(ii) Briefly explain how this holder is formed
into shape. |
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(iii) What does 'CSK' refer to in the drawing
of the holder shown above ? |
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(iv) What gauge would be used to tell the
difference between a 3.2 mm and a 3.5 mm drill ? |
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(v) What safety precautions should you take
when drilling sheet metal ? |
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(vi) The holder shown above can be made from
a piece of metal measuring : |
72 mm X 21 mm |
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72 mm X 36 mm |
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72 mm X 24 mm |
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72 mm X 12 mm |
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(vii) Select the correct symbols from the
chart and draw the circuit diagram for the model aeroplane. |
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Draw the circuit diagram
in this box |
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(a) |
![](../images/1999/5a1.gif) |
(i) Which colour wire connects
to each plug terminal ? |
Terminal No. |
Wire Colour |
1. |
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2. |
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3. |
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(ii) Name each plug terminal. |
Terminal No. |
Terminal Name |
1. |
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2. |
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3. |
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(iii) What is the function
of the plug fuse ? |
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(b) |
(i) This electronic component
is a(n) : |
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Resistor |
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LDR |
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LED |
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Transistor |
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(ii) This symbol represents
a : |
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Switch |
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Buzzer |
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Loudspeaker |
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Generator |
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(iii) Briefly describe how
the use of electronic equipment has
improved our lives. |
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(c) |
(i) Complete the chart by
naming the achievement of each inventor. |
INVENTOR |
ACHIEVEMENT |
1. Wright Brothers |
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2. John P. Holland |
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3. John Dunlop |
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4. James Watt |
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5. Rudolf Diesel |
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(ii) |
Henry Ford developed the mass
production of motor cars. |
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The design shows details of a mild steel
candle holder. |
![](../images/1999/candleholder.gif) |
(i) List three workshop processes
involved in the making of part (a). |
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(ii) List three Lathe processes involved
in the making of part (b). |
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(iii) List three safety precautions
to be observed when operating a centre lathe. |
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(iv) What process should be used for
joining parts (a) and (b) ? |
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(v) Draw an elevation of part
(b) when viewed from arrow 'X' and then
project an end elevation viewed from
arrow 'Y'. |
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(vi) If you were asked to design a
candle-holder list three questions you would
ask before making the holder. |
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