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Metalwork - Exam Papers - OL - Paper - 2001
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: |
Plastic Material |
Thermosetting or Thermoplastic |
List a use for each plastic |
Polyurethanes |
Thermosetting |
Flexible foam for upholstery |
Polythene |
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Acrylic |
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Nylon |
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(ii) The ability of a metal to withstand wear is called: |
Elasticity |
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Hardness |
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Brittleness |
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Malleability |
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(b) |
Complete the chart: |
(i) |
Is the melting of a glass powder onto copper called enamelling? |
Yes |
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No |
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(ii) |
Is hollowing a method used to form copper bowls? |
Yes |
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No |
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(iii) |
Does copper work harden? |
Yes |
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No |
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(iv) |
Is repousse the method used to produce raised designs in copper? |
Yes |
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No |
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(v) |
Does copper rust? |
Yes |
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No |
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(vi) |
Does engraving involve the use of acid? |
Yes |
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No |
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(c) |
Complete the chart: |
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(i) |
Does this furnace produce Pig Iron? |
Yes |
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No |
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(ii) |
Does molten metal form part of the charge for this furnace? |
Yes |
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No |
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(iii) |
Is this a Basic Oxygen Furnace? |
Yes |
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No |
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(iv) |
Is hot air blown through the tuyeres of this furnace? |
Yes |
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No |
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(v) |
Can this furnace be tilted to pour the molten metal? |
Yes |
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No |
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(vi) |
Does molten metal fall to the bottom of this furnace? |
Yes |
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No |
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(a) |
(i) Indicate with an arrow the direction of movement of part 'X' in each of the following: |
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(ii) Name a machine that uses a rack and pinion mechanism. |
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(b) |
Answer the following: |
(i) Is gear 'B' turning anti-clockwise? |
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(iv) Is part 'X' called a cotter pin? |
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(ii) Is part 'X' called a rachet? |
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(v) Can gears be made from nylon? |
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(iii) Does gear 'B' turn faster than gear 'A'? |
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(vi) Are these gears known as bevel gears? |
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(c) |
Name the mechanism part indicated by 'X' in each of the following : |
![](../images/2001/31.gif) |
Name : _________________ |
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![](../images/2001/32.gif) |
Name : _________________ |
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![](../images/2001/33.gif) |
Name : _________________ |
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Details of a Wind-Powered Pump are shown. |
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(i) List the steps involved in making the Shaft Support from a blank piece of metal. |
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(ii) What does 'Ø3.5x4' refer to in this drawing? |
(iii) What is the overall height of the Shaft Support? |
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(iv) What safety precautions should be taken when drilling sheet metal? |
(v) The Windvane is to be made from brass, copper or aluminium. What have these metals got in common? |
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(vi) Draw a development of the Shaft Support in the grid below |
![](../images/1992/writinghand.gif) |
USE A
PENCIL
ONLY |
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(a) |
(i) Select the correct symbols from the chart and complete the electrical circuit diagram for this motor powered vehicle. |
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Draw the
circuit in this box |
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(ii) Does a battery supply A.C. current? |
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(iii) Does a motor convert electrical energy into mechanical energy? |
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(b) |
(i) This electronic component is a(n): |
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Resistor |
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Buzzer |
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Integrated Circuit (lC) |
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Transistor |
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(ii) This symbol represents a(n): |
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(iii) Complete the chart: |
Can the speed of an electric motor be changed? |
Yes |
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No |
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Does solder, used for electronics, contain flux. |
Yes |
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No |
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(c) |
Complete the chart by matching the inventor to the invention. Inventors:
Rudolf Diesel, John P. Holland, James Watt, Nicholas Otto, John Dunlop, Alexander Graham Bell |
Invention |
Inventor |
1. Diesel Engine |
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2. Submarine |
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3. Four Stroke Engine |
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4. Pneumatic Tyre |
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5. Steam Engine |
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6. Telephone |
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This drawing shows details of a mild steel wall bracket for a bird house. |
(i) What is the total length of part 'A'? |
![](../images/2001/47.gif) |
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(ii) How would you join part 'A' to part 'B'? |
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(iii) How would you prevent the wall bracket from rusting? |
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(iv) Give details on this drawing, (in the circled section), of how the wall bracket could be strenghtened. |
(v) Does mild steel contain between 0.15% - 0.30% carbon? |
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(vi) Briefly describe how the hook at the end of part 'B' could be formed. |
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(vii) Draw full size, in the box below, a complete development of part 'A' showing all bend lines. (Width of part 'A' = 50mm) -, |
![](../images/1992/writinghand.gif) |
USE A
PENCIL
ONLY |
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