Metalwork - Exam Papers - OL - Paper - 1994

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100 Marks

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.

1.
(40 Marks)

SECTION A - 20 MARKS

ANSWER ANY TEN QUESTIONS FROM THIS SECTION

(a) The thread form is a(n) : Buttress Thread  
Acme Thread  
Square Thread  
ISO Metric Thread  
(b) The tool is a(n) : Tap Wrench  
Adjustable Spanner  
Box Spanner  
Stillson Wrench  
(c) The fastener is a : Rivet  
Bolt  
Split Pin  
Grub Screw  
(d) The cutting tool is a : Straight Snips  
Curved Snips  
Bench Shears  
Combination Pliers  
(e) The technique is called : Sinking  
Raising  
Hollowing  
Punching  
(f) The chisel is made from : High Carbon Steel  
Mild Steel  
Stainless Steel  
Aluminium  
(g) The measuring instrument is a(n) : Inside Callipers  
Odd Leg Callipers  
Outside Callipers  
Vernier Callipers  
(h) The stock and die is used for : Tapping  
Screwing  
Riveting  
Drilling  
(i) Part 'X' is called the : Punching Hole  
Cutting Table  
Stand  
Bick  
(j) The tool is a : Pin Vice  
Toolmaker's Clamp  
Hand Vice  
Vice Grips  
(k) Part 'X' is called the : Edge  
Face  
Handle  
Tang  
(l) The technique is called : Bending  
Twisting  
Scrolling  
Forming  

SECTION B - 20 MARKS

ANSWER ALL QUESTIONS FROM THIS SECTION

(m)
(i) Complete the chart
Part Material
1. Boat  
2. Windscreen  
3. Propeller  
4. Trailer Frame  
(ii) How can the trailer be protected against rust ?
 
 
(n)
Using the labels, briefly explain how the winch works :
 
 
 
 
(o)
(i) The fishing line is made from : (ii) The submarine was invented by :
Nylon  
Acrylic  
Polyester  
PVC  
Henry Ford  
John Dunlop  
John P. Holland  
Nicholas Otto  
(p)
(i) The boat trailer steering uses a : (ii) The trailer frame parts are joined by :
Rack and Pinion  
Castor  
Cam  
Ball Bearing  
Welding  
Soldering  
Brazing  
Riveting  
(q)
(i) The boat is lifted using : (ii) Metal plates used for shipbuilding are made from :
Levers  
Pulleys  
Gears  
Chain and Sprocket  
Dead Mild Steel  
Mild Steel  
Medium Carbon Steel  
High Carbon Steel  
2.
(20 Marks)
(a) (i) Complete the chart :
Plastics Material Thermosetting or Thermoplastic List a use for each plastic
Polyurethane Thermosetting Flexible foam for upholstery
Polythene    
Acrylic    
PVC    
(ii) The melting of plastics material onto metal is called :
Painting  
Lacquering  
Dip Coating  
Enamelling  
(b)
(i) Complete the chart
Component Metals Alloy formed List a use for each alloy
Iron and Carbon Steel Gates
Lead and Tin    
Copper and Zinc    
Copper and Tin    
(ii) Lead is a :
Malleable Metal  
Hard Metal  
Strong Metal  
Brittle Metal  
(c)
(i) Name the furnace.
 
(ii) Name two types of steel.
1.  
2.  
(iii) Steel is a :
Ferrous material  
Non-ferrous material  
3.
(20 Marks)
(a)
(i) Indicate with an arrow the direction of movement of part (X) in each of the following :
(ii) Rotary motion is changed to linear motion using a :
Ratchet and Pawl  
Worm Gear  
Pulley System  
Parallel Linkage  
(b)
(i) Bevel gear shafts are at :
45° to eachother  
180° to eachother  
90° to eachother  
60° to eachother  
(ii) Name a tool that uses bevel gears.
 
(iii) Name the gear.
 
(c)
(i) The motor converts electrical energy into :
Mechanical Energy  
Chemical Energy  
Heat Energy  
Electrical Energy  
(ii) Name a machine, having a motor that is used in :
  (a) the home.
(b) the school workshop.
 
 
4.
(20 Marks)
(a)
(i) Match the number to the correct part.
Part No.
Toolpost  
Tool Holder  
Three-Jaw Chuck  
Tailstock  
Knurling Tool  
Top Slide  
(ii) When should a four-jaw chuck be used ?
 
(b)
(i) In which sketch is the cutting tool in the correct position ?
Sketch (a)  
Sketch (b)  
Sketch (c)  
(ii) Why is a centre drill used ?
 
 
(c)
(i) What instrument should be used to measure the diameter of the shaft ?
 
(ii) Why is a gap bed on a centre lathe ?
 
 
5.
(20 Marks)
(a)
(i) Select the correct symbols from the chart and complete the electrical circuit diagram for the torch.
SYMBOLS
Draw the circuit in this box.
                   
                   
                   
                   
                   
                   
                   
                   
(ii) The electronic component is a :
LDR  
Buzzer  
Light Emitting Diode  
Resistor  
(b)
Using labels, briefly explain how the circuit works.
 
 
 
 
 
 
(c)
(i) List one safety measure to be observed when using an electric soldering iron.
 
 
 
 
(ii) Is this solder supplied with resin flux in its core ?
Yes  
No  
6.
(20 Marks)
(i) The design shows a noughts and crosses game. Name suitable materials to make parts (a), (b) and (c) and state a reason for your choice in each case.
 
Part Material Reason
a.    
b.    
c.    
(ii) List three workshop processes involved in making part (b).
1.  
2.  
3.  
(iii) Briefly explain how part (c) is drilled.
 
 
 
(iv) What joining processes should be used for parts (a) and (b) ?
 
(v) Draw freehand, an elevation and plan of the noughts and crosses game in the box below.
USE A
PENCIL
ONLY