1. Which of the following is required - in theory - for two perfectly matched faces?
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Atomic cleanliness
Atomic closeness
Pressure
Atomic cleanliness and atomic pressure
All the above
Bottom of Form 2. Fusion bonding creates a metallurgical effect similar to?
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Rolling
Forging
Casting
Sintering
Bottom of Form 3. The bonding process giving very high efficiency is?
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Fusion bonding
Pressure bonding
Flow bonding
Atomic bonding
Bottom of Form 4. A bonding process where only very small amounts of the base metal is used is called?
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Fusion bonding
Pressure bonding
Flow bonding
Cold bonding
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5. Flow bonding is a particular type of bond, which listed below would be classed as a flow bond?
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Fusion welding
Braze welding
Metal arc welding
None of the above
Bottom of Form 6. Which of these defects can be found in fusion welds?
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Porosity
Slag
Cracks
All of the above
Bottom of Form 7. That portion of the base metal affected by the welding process is known as?
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The weld zone
The heat input zone
The weld affect zone
The heat affected zone
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8. Multiple cooling rates can have adverse affects on weld areas. What can be done to offset this problem?
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Use different alloy rods to control temperature
Using a pre-heat
Use different alloy rods to control temperature and using a pre-heat
Nothing can be done to offset the problem
Bottom of Form 9. Angular distortionmay occur in a weld when?
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Restraints are used
Multipass welds are used
Single pass welds are used
Multiple welds and single pass welds are used
Bottom of Form 10. Longitudinal stresses in a weld are at a maximum?
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Along the weld centre line
On the weld fusion face
At the heat affected zone
Lomgitudinal stresses are uniform across teh weld
Bottom of Form 11. What is required to form a fusion bond?
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Melting of parent metals
A filler rod
Pressure
All of the above
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12. Flow bonding is a term used in the welding process which of the following would be classed as flow bonding?
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Brazing
Braze welding
Soldering
All of the above
Bottom of Form 13. To join two metals which of teh following is essential?
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Atomic closeness
Atomic cleanliness
Melting
Atomic closeness and cleanliness
All the above
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14. In order to produce a fully homgenous material afetr welding which of the following is required?
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Preheat
Post heat treatment
Low heat input welding
Fillers of different composition
Bottom of Form 15. In electric arc welding, a metal rod is one electrode, the other is?
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The work material
The rod flux
The earth
The work material and the rod flux
Bottom of Form 16. Stud welding is used primarily to?
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Bond two dissimilar metals
Attach threaded fasteners to plates
Rivot plates together
Fuse bar ends together
Bottom of Form 17. A welding electrode coatings provides?
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A shield for the arc against the atmosphere
Added heat input
Additional stresses to the weld
None of the above
Bottom of Form 18. Where gas is used as a shield for the welding process the gas is commonly?
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Argon
Helium
Hydrogen
Argon and Helium
All of the above
Bottom of Form 19. When using gas metal arc welding what range of filler wire diameter is available?
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0.1-0.5mm
0.5-3mm
0.1-30mm
0.5-10mm
Bottom of Form 20. Automatic welding under a flux is more commonly known as?
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TIG welding
Manual metal arc welding
Submerged arc welding
Stick welding
Bottom of Form 21. Spot welding is commonly used in which of the following applications?
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Car manufacturing
Seam welding
Shipbuilding
Fabrication yards
Bottom of Form 22. Which welding process takes place in a vacuum?
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Plasma arc welding
Electron beam welding
Friction welding
Explosion welding
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23. Which welding process is generally used to weld the ends of heavy round bars or tubes?
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Ultrasonic welding
Electroslag welding
Plasma arc welding
Friction welding
Bottom of Form 24. Explosion welding is generally used to join?
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Two or more metals of different composition
Butt welds
Very think titanium sheeting
Plastics
Bottom of Form 25. The drawing symbol at the bottom of the page marked one illustrates a?
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Bevel groove
Fillet
J Groove
Vee Groove
Bottom of Form 26. The drawing symbol at the bottom of the page marked two illustrates a?
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Vee Groove
J Groove
U Groove
Bevel Groove
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27. AWS categorise weld defects into three classes which below is a dimensional defect?
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Slag
Warping
Lack of fusion
Porosity
Bottom of Form 28. Which of the following is classed as a structural defect?
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Undercut
Slag
Incomplete fusion
Slag and incomplete fusion
All of the above
Bottom of Form 29. Which of the following defects occur in the base metal?
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Lamination
Slag inclusion
Lack of fusion
Lack of penetration
Bottom of Form 30. Welds without preheat are said to have?
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Very low thermal gradients
Low thermal gradients
Medium thermal gradients
High thermal gradients
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31. Why is it advisable to leave final inspection of a weld until well after welding has finished?
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Because the welds will be too hot to test
Due to the possibility of distortion
Due to the possibility of post weld cracking
All of the above
Bottom of Form 32. What is the approximate arc column temperature in an electric arc weld?
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6000 degrees celsius
5000 degrees celsius
4000 degrees celsius
3000 degrees celsius
Bottom of Form 33. Which of the following is classified as an inert gas?
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Hydrogen
Helium
Oxygen
All of the above
Hydrogen and helium only
Bottom of Form 34. Which weld process has a non-consumable electrode?
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Manual metal arc
Metal inert gas
Tungsten inert gas
Manual metal arc and metal inert gas
Bottom of Form 35. The weld symbol µ is used to symbolise a?
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Fillet weld
U-Groove
Bevel groove
None of the above
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36. When using basic symbols for NDT what letters are used to denote liquid penetrant testing?
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LPT
FPT
PT
RPT
Bottom of Form 37. hich of the following processes could be performed using oxyacetylene equipment?
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Flame cutting
Brazing
Soldering
Brazing and Soldering
All of the above
Bottom of Form 38. How might a weld arc be shielded from oxidation?
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Flux powders
Welding rod coatings
Inert gases
Welding rod coatings and inert gases
All of the above
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39. The ease with which a solid union may be made between two parts by welding is known as?
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Weldability
Joining
Buttering
Soldering
Bottom of Form 40. A typical temperature range to stress relieve ferritic steel is?
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100-150 degrees celsius
250-300 degrees celsius
600-650 degrees celsius
900-950 degrees celsius
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