Metalwork - Exam Papers - OL - Paper - 2002

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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) This cutting tool is a: Curved Snips  
Straight Snips  
Universal Snips  
Bench Shears  
(b) This tool is used when : Riveting  
Drilling  
Threading  
Soldering  
(c) This soldering iron bit is made from: Brass  
Copper  
Lead  
Steel  
(d) This technique is called: Scrolling  
Forming  
Twisting  
Bending  
(e) This scriber is made from: Mild Steel  
Cast Iron  
High Carbon Steel  
Tin  
(f) This tool is a: Die Stocks  
Tap Wrench  
Split Die  
Taper Tap  
(g) This lathe part is a: Headstock  
Tailstock  
Centre  
Carriage  
(h) Hacksaw blades are made from: Mild Steel  
Stainless Steel  
High Speed Steel  
Cast Iron  
(i) This tool is a(n): Box Spanner  
Ring Spanner  
Allen Key  
Open Spanner  
(j) This instrument is a(n): Thread Gauge  
Feeler Gauge  
Engineers Protractor  
Wire Gauge  
(k) Part 'X' is called the: Sleeve  
Thimble  
Frame  
Ratchet  
(l) The distance 'X' is called the; Flank  
Lead  
Pitch  
Crest  

SECTION B - 20 MARKS

ANSWER ALL QUESTIONS FROM THIS SECTION

(m)
(i) Complete the chart by listing a different material for each part:
Part Material
1. Body  
2. Headlight Lens  
3. Soft Roof  
4. Wheels  
(ii) How can steel be protected against rust?
 
(n)
(i) Truck engines are powered by: (ii) Truck engines are lubricated using:
Unleaded Petrol  
Leaded Petrol  
Diesel  
Gas  
Oil  
Air  
Water  
Cooling Fluid  
(o)
(i) This is a: (ii) The steam engine was invented by:
Drum Brake  
Disc Brake  
Stirrup Brake  
Shoe Brake  
Henry Ford  
James Watt  
John P. Holland  
Rudolf Diesel  
(p)
(i) Part 'X' is called the:
(ii) Part 'Y' Is called the:
Camshaft  
Connecting Rod  
Piston  
Crankshaft  
Fan Belt  
Alternator  
Cooling Fan  
Crankshaft Pulley  
(q)
(i) The load is lifted using: (ii) If gear 'A' rotates at 40 RPM, how fast will gear 'B' rotate?
(A =10 Teeth, B =40 Teeth.)
Levers  
Pulleys  
Gears  
Chain and Sprocket  
 
2.
(20 Marks)
(a)
(i) Complete the chart:
Plastic Material Thermosetting or Thermoplastic List two uses for each plastic
PVC Thermoplastic (i) Pipes (ii) Windows
Acrylic   (i) (ii)
Nylon   (i) (ii)
(ii) Complete the chart:
Metals Ferrous or Non - Ferrous List two uses for each metal
Brass Non - Ferrous (i) Screws (ii) Door Handles
Mild Steel   (i) (ii)
Copper   (i) (ii)
(b)
Complete the chart:
(i) Is Lead a hard material? Yes  
No  
(ii) Is Iron Ore mined from the ground? Yes  
No  
(iii) Is brittleness the ability of a material to resist wear? Yes  
No  
(iv) Is Copper a malleable material? Yes  
No  
(v) Is Cast Iron produced in the Electric Arc Furnace? Yes  
No  
(vi) Are Ferrous metals magnetic? Yes  
No  
(c)
(i) Name this steel making furnace:
 
(ii) Part 'X' is called the:
Arc  
Oxygen Lance  
Charge  
Electrode  
(iii) Which one of these metals is an alloy?
Aluminium  
Zinc  
Bronze  
Copper  
3.
(20 Marks)
(a)
(i) Name the part of the mechanism marked 'X' in each box.
Name: Name: Name:
Name: Name: Name:
(ii) This hand drill uses:
Spur Gears  
Bevel Gears  
Ratchets  
Pulleys  
(b)
(i) The driven gear rotates:
at the same speed as the driver.  
slower than the driver.  
faster than the driver.  
(ii) The idler gear causes the driven gear to:
rotate in the same direction as the driver.  
go slower.  
go faster.  
(iii) Name a machine in the school workshop that uses gears:
 
(c)
(i) Complete the chart by naming the inventors:
INVENTION INVENTOR
1. Pneumatic Tyre  
2. Telephone  
3. Mass Production  
4. Submarine  
4.
(20 Marks)
Details of a model jet are shown.
(i) State the steps involved in making the!!!!:!!! from a blank piece of metal.
 
 
 
 
(ii) Briefly explain how the engine is made.
 
 
 
 
(iii) What does 'CSK' refer to in the drawing of the engine shown above?
 
(iv) What is the overall width and height of the engine?
 
(v) What is the difference between a pilot hole and a tapping hole?
 
 
 
 
(vi) Select the correct symbols from the chart and draw the circuit diagram for the model jet.
Symbols
Draw the circuit diagram In this box.
                   
                   
                   
                   
                   
                   
                   
                   
                   
                   

Circuit for the model jet
5.
(20 Marks)
(a)
Select the correct symbols from the chart and complete the electrical circuit diagram for this motor driven truck.
Symbols
Draw the circuit diagram In this box.
                   
                   
                   
                   
                   
                   
                   
                   
                   
                   
(b)
(i) Briefly explain the difference between a motor and a dynamo.
 
 
 
 
 
 
(ii) List two safety precautions to be observed when using an electric soldering iron.
 
 
 
 
(c)
(i) This electronic component is a(n):
Resistor  
LDR  
LED  
Transistor  
(ii) This symbol represents a:
Switch  
Buzzer  
Loudspeaker  
Battery  
6.
(20 Marks)
(i) This design shows a Letter Rack made from brass. List three processes involved in making the letter rack.
1.  
2.  
3.  
(ii) List three safety precautions that should be observed when working with brass sheet.
1.  
2.  
3.  
(iii) Briefly describe how you would bend the legs to the required shape.
 
 
 
 
 
 
(iv) Is brass an alloy?
Yes  
No  
(v) Draw an elevation of the letter rack looking in the direction of arrow 'X' in the grid below.
USE A
PENCIL
ONLY