CSWIP 3.1 Part 4

39 Questions  I  By Emad_rio
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 CSWIP 3.1 part 4
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  • 1. 
    What is the arc enegy for the following welding process parameters? 
    • A. 

      0.7 KJ/mm

    • B. 

      0.6KJ/mm

    • C. 

      0.01KJ/mm

    • D. 

      0.7KJ/mm


  • 2. 
    In an all weld metal tensile test, the original test specimens gauge length of 50mm after testing the gauge increased to 72mm, what is the elongation percentage?
    • A. 

      44%

    • B. 

      144%

    • C. 

      69.4%

    • D. 

      2.27%

    • E. 

      The elongation is not normally tested in this test


  • 3. 
    What is the ratio between the leg length and design throat thickness on mitre fillet weld with equal leg lengths?
    • A. 

      1 to 1

    • B. 

      2 to 1

    • C. 

      1.414 to 1

    • D. 

      All of the above it depend upon the leg length size


  • 4. 
    The toughness and yield strength of steel is reduced by:
    • A. 

      Reducing the grain size

    • B. 

      Increasing the heat input

    • C. 

      Reducing the heat input

    • D. 

      Both a and b


  • 5. 
    Which of the following statments is true if applicable to a charpy vee notch impact test?
    • A. 

      It's destructive test used to assess material ductility in the weld zone

    • B. 

      It 's a mechanical test used to determine a welds resistance to creep

    • C. 

      It' s destructive test,which is used to give a measure of notch toughness

    • D. 

      It's a static test used to determine material toughness in the notch region

    • E. 

      Both a and c


  • 6. 
    Haw can you tell the diffrence between an EN/ISO weld symbol and a BS weld symbol?
    • A. 

      The EN/ISO weld symbol will always have the arrow side weld at the top of the reference line

    • B. 

      The EN/ISO weld symbol has the welds elementary symbol placed on a dached line lying above or below the solid reference line to indicate a weld on the other side

    • C. 

      The EN/ISO weld symbol has a fillet weld leg length identified by the letter "a"

    • D. 

      The EN/ISO weld symbol has a fillet weld throat thickness identified by the letter "z"

    • E. 

      Both b and d


  • 7. 
    What is the possible effect of having the heat input too low during welding? 
    • A. 

      Low toughness,entrapped hydrogen and low hardness

    • B. 

      High hardness,lack of fusion and entrapped hydrogen

    • C. 

      Entrapped hydrogen ,low toughness and high ductility

    • D. 

      Lack of fusion ,low toughness and reduction in ductility


  • 8. 
    An MMA electrode classified as E7018 is :
    • A. 

      A basic low hydrogen electrode containing iron powder

    • B. 

      A rutile electrode containing iron powder

    • C. 

      A cellulose electrode suitable for welding in all positions

    • D. 

      A basic electrode depositing weld metal with yield strength af a least 70,000 psi

    • E. 

      Both a and d


  • 9. 
    The number 135 is placed at the end of the reference line on a weld symbol.according to ISO 2553 what does number indicate?
    • A. 

      The welding process is stated as MMA

    • B. 

      The welding process is stated as TIG

    • C. 

      The welding process is stated as SAW

    • D. 

      NDT is to e carried out after welding

    • E. 

      None of the above


  • 10. 
    Wich of the following is the most likely to be considered an essential variable for a welde qualification test?
    • A. 

      A change from an electrode classified to BS EN 499 as an E46 3 INI B to an electrode classified to AWS A5.1 as an E7018

    • B. 

      A change of pipe wall thickness by at least 15 mm

    • C. 

      A change in pre-heat temperature from 50°C to 100°C

    • D. 

      A change from PC welding position to PA welding position

    • E. 

      All of the above


  • 11. 
    What would be a typical appearance of a dutile fracture surface?
    • A. 

      Rough randomly torn and a reduction in area

    • B. 

      Smooth fracture surface displaying beach marks

    • C. 

      Step like appearance

    • D. 

      Bright crystalline fracture with very little reduction in area

    • E. 

      Both a and b


  • 12. 
    Wihich of the following under typical conditions using the MMA welding process would give the deepest penetration?
    • A. 

      DC-ve

    • B. 

      DC+ve

    • C. 

      AC

    • D. 

      Both a and b


  • 13. 
    The inclusion the rate an inductance in the welding circuit when using MIG/MAG welding process is to :
    • A. 

      Control the rate of spatter in the dip transfer mode

    • B. 

      It enable the welder to weld in position with the spray transfer mode

    • C. 

      It allows for thicker filler wires to be used(2.6-3.6mm diameter)

    • D. 

      It allow full control over droplet size in the spray transfer mode


  • 14. 
    An undesirable property of aluminium oxide residue ,when welding is that it:
    • A. 

      Decreases weld pool fluidity

    • B. 

      Requires more heat to melt it when compared to aluminium

    • C. 

      Causes the welder to travel to quickly

    • D. 

      The presence of the oxide makes aluminium impossible to weld


  • 15. 
    When welding with the MIG welding process using pure argon as the sheilding gas on carbon steel ,which of the following problems are likely to occur?
    • A. 

      Copper inclusion and excessive cap heights

    • B. 

      Excessive root penetration and porosity

    • C. 

      Slag inclusion and crater pipe

    • D. 

      Lack of fusion and poor cap profiles


  • 16. 
    When considering the tungsten arc welding process what is the purpose of the down-slope (slope -out)control?
    • A. 

      Ensure good penetration

    • B. 

      To prevent the arc striking on the parent material

    • C. 

      To help prevent the formation of crater pipe and possible cracking

    • D. 

      To help prevent tungstan inclusion during welding


  • 17. 
    When considering thermal cutting local hardening can be reduced by:
    • A. 

      Increasing the cutting speed

    • B. 

      The use propane as a fuel gas

    • C. 

      Pre heating the material to be cut

    • D. 

      All of the above


  • 18. 
    In a sami-automatic wlding process, which of the following shielding gas/gas mixtures would normally give the deepest penetration on steel?
    • A. 

      100% argon

    • B. 

      100% CO2

    • C. 

      75% argon +25% CO2

    • D. 

      All of the above would give the same depth in penetration


  • 19. 
    In a MMA weldig process,which of following statments are false?
    • A. 

      An arc gap,which remains almost constant even if as usual the welder varies the position of the electrode

    • B. 

      A voltage ,which remains almost constan even if as usual the welder ,varies the arc gap

    • C. 

      A current ,which remains almost constan even if as usual the welder ,varies the arc gap

    • D. 

      A and b

    • E. 

      All of the above


  • 20. 
    When considering the MIG/MAG welding process which of the following metal transfer modes would be the best suited to the welding of thick plates over 25mm,flat welding position :
    • A. 

      Dip transfer

    • B. 

      Pulse transfer

    • C. 

      Spray transfer

    • D. 

      Globular transfer


  • 21. 
    Which of the following current types would you expect to be used for the welding of aluminium with the TIG welding process?
    • A. 

      DC-ve

    • B. 

      DC+ve

    • C. 

      AC

    • D. 

      All of the above


  • 22. 
    When considering hydrogen,which of the following welding process would produce the lowest levels in the completed weld (under controlled conditions)?
    • A. 

      MMA

    • B. 

      SAW

    • C. 

      TIG

    • D. 

      FCAW


  • 23. 
    Pre heat prior to the welding of a carbon steel but weld:
    • A. 

      Must always be carried out

    • B. 

      Is always carried out using a gas flame

    • C. 

      Need not be carried out if post weld heat treatment is to follow

    • D. 

      None of the above


  • 24. 
    In steel the element with the greatest effect on hardness is :
    • A. 

      Chromium

    • B. 

      Manganese

    • C. 

      Carbon

    • D. 

      Nickel


  • 25. 
    For a given voltage and current setting on a MMA welding plant, when the arc length is shortend , which of the will be most affected?
    • A. 

      The current will increase

    • B. 

      The current will decrease

    • C. 

      The voltage will decrease

    • D. 

      The voltage will increase


  • 26. 
    Which of the following best describes a sami-autimatic welding process?
    • A. 

      The welder is responsible for the maintaining the arc gap and travel speed

    • B. 

      The welder is responsible for travel speed only;arc gap is kept constant by the welding plant

    • C. 

      Both travel speed and arc gap is controlled by the welding plant

    • D. 

      All of above


  • 27. 
    What is purpose of rectifier in welding sets electrical circuit?
    • A. 

      To keep the arc stable when using low current settings

    • B. 

      To convert AC current to DC current

    • C. 

      To convert DC current to AC current

    • D. 

      To initiate arc at start up


  • 28. 
    When calibrating a mechanised MAG welding plant ,which of the following applies(WFS=wire feed speed)?
    • A. 

      Check- WFS,current ,volts and wire diameter

    • B. 

      Check- WFS,joint set-up ,gas flow rate and WFS

    • C. 

      Check- gas flow rate,stick out length,WFS and current

    • D. 

      All of the above


  • 29. 
    The main usage of the arc air process is :
    • A. 

      The cutting of a weld preparation

    • B. 

      The removal of defective weld

    • C. 

      For the cutting of non-ferrous materials only

    • D. 

      For the cutting of ferrous materials only


  • 30. 
    Which of following fillet welded tee joints would have the highest resistance to fatigue fractures ,assuming material ,welding process ,filler material to be the same?
    • A. 

      A convex fillet weld throat thickness 8mm

    • B. 

      A mitre fillet weld throat thickness 8mm

    • C. 

      A concave fillet weld throat thickness 6mm

    • D. 

      Both a and b (throat thicknesses dimension the same)


  • 31. 
    You notice TIG welding being carried out using MMA electrode striped of flux being used as filler wires .you would certainly report this issue and file a non-conformance report .what would the main reson why?
    • A. 

      Because of the additional cost incurred

    • B. 

      The wire would have been too thick

    • C. 

      Weld metals composition would be incorrect

    • D. 

      The welder would not be qualified


  • 32. 
    The main reason for grinding the capping passes flush is:
    • A. 

      To increase fatigue life

    • B. 

      To increase the chances of fatigue cracking

    • C. 

      To improve visual appearance

    • D. 

      To reduce the components weight


  • 33. 
    Duplex stainless steel can be somtimes referred to as:
    • A. 

      Martensitic stainless steel

    • B. 

      Ferritic/austenitic stainless steel

    • C. 

      316L stainless steel

    • D. 

      All of the above


  • 34. 
    Weld center line longitudinal cracks in welded butt joints may have resulted from which of the following ?
    • A. 

      Solidification problems

    • B. 

      Hydrogen entrapment

    • C. 

      Poor welder skill

    • D. 

      Both a and b


  • 35. 
    Which of following would be considered a typical heat input reading with the MIG/MAG welding process?
    • A. 

      1.2KJ/mm

    • B. 

      12KJ/mm

    • C. 

      1.2 Joules /mm

    • D. 

      6.5 KJ/mm


  • 36. 
    During the visual inspection of a fillet weld with even lengths of 15mm.the throat thickness is measured at 8.5mm,what is the fillet welds profile?
    • A. 

      Convex

    • B. 

      Mitre

    • C. 

      Concave

    • D. 

      Both a and b


  • 37. 
      which of following welding parameters are the most difficult to control during the welding operation using a manual arc welding process?
    • A. 

      Travel speed

    • B. 

      Voltage

    • C. 

      Current

    • D. 

      Arc length


  • 38. 
    You are the only welding inspection on a cross country gas supply pipline project .which of the following welding /fabrication stages would you consider the most important stage for your closest scrutiny?
    • A. 

      Fit-up and root pass welding

    • B. 

      Post weld cleaning

    • C. 

      Fillers and capping pass welding

    • D. 

      Radiography


  • 39. 
    Which of the following us the best why to identify hydrogen controlled electrodes for the MMAwelding process?
    • A. 

      The colour of the flux covering

    • B. 

      The electrodes classification code on box

    • C. 

      The electrodes classification code on stamped on to the electrode

    • D. 

      The electrode trade/manufacturers name

    • E. 

      All of the above


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