CSWIP 3.1 Multiple Choice Paper 7

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  1. The purpose of a hot pass is to:
    A) Improve fusion
    B) Improve profile
    C) Remove hydrogen
    D) Remove Sulphur

  2. Which of the following processes uses a flat characteristic?
    A) 131
    B) Oxy-fuel gas welding
    C) Resistance spot welding
    D) 121 using more than 1000 amps

  3. When welding medium carbon steel plates over 100mm in thickness would basic electrodes require any pre-treatment before use?
    A) None if they were in a vacuum pack opened 8 hours prior to use
    B) None if they were in a sealed vacuum pack prior to use
    C) Heat to 500˚C for 2 hours if used outside
    D) Baked at 150˚C for 4 hours prior to use

  4. Standard on the same subject approved by different standardizing bodies, that establish inter-changeability of products, processes and services, or mutual understanding of test results or information provided according to these standards are called:
    A) Codes of practice
    B) Harmonized standards
    C) Quality plan
    D) Quality management systems

  5. When welding medium carbon steel plates over 120 mm in thickness would the basic electrodes require any pre-treatment before use?
    A) None if they were in a vacuum pack
    B) None if they were used in a factory
    C) Heat to 500˚C for 2 hours if used outside
    D) Baked at 150˚C for 4 hours prior to use

  6. Which of the following is NOT a quantitative test?
    A) Root bend
    B) Macro hardness
    C) Charpy
    D) Tensile

  7. When would you measure the minimum preheat temperature?
    A) On completion of each pass
    B) Immediately prior to commencing the first pass and subsequent passes
    C) When the welding is complete
    D) Minimum preheat temperature measurement is only required if the heat input is lower than that specified in WPS

  8. When SAW welding using twin wires with separate power supplies what should the electrical characteristics be?
    A) Both wires DC+ve
    B) Both wires AC
    C) The lead wire DC+ve polarity followed by the trailing wire using a AC polarity
    D) Both wires DC-ve

  9. What would the effect be if the polarity were changed from DC-ve to DC+ve when 111 welding?
    A) More penetration
    B) None
    C) Greater deposition rate
    D) Less penetration

  10. Voltage and amperage meters have been removed from GMAW equipment making calibration invalid, the equipment should be:
    A) Quarantined
    B) Only used for tack welds
    C) Only used if validated
    D) Monitored closely by the welding inspector for amperage and voltage

  11. Why is it essential to clean the weld area on completion of the production weld?
    A) So it can be ready for painting
    B) To remove ant test
    C) To ensure it is suitably clean for visual inspection and NDT
    D) To remove slag from the undercut

  12. An 80 mm diameter pipe, 10 mm wall thickness is to be radiographed using the double wall single imagine technique. The source to be used is iridium. Which of the following statements is true?
    A) It should not be done as the thickness is below that recommended
    B) It would be better to use a cobalt 60 source in this instance
    C) There in no problem with the technique
    D) The preferred method is the double wall, double image technique

  13. In a welding procedure transverse joint tensile test the following observation were made. The specimen CSA was recorded as 40mm X 20mm and the maximum load applied was recorded as 190kN. What is the UTS
    A) 237.5kN/mm2
    B) 247.5N/mm2
    C) 24.5N/mm2
    D) 237.5N/mm2

  14. What is the most important information that the welding inspector should enter on an electrode vacuum pack at the point of breaking the vacuum?
    A) Welder’s name.
    B) Weld ID number
    C) Air humidity content
    D) Time and date of opening

  15. Which of the following defects is usually associated with MAG welding process when using Dip Transfer?
    A) Centreline cracking
    B) Lack of side wall fusing
    C) Undercut
    D) Tungsten inclusions

  16. Weld decay can be minimised specifying a steel with:
    A) higher carbon level
    B) higher caromium level
    C) lower carbon level
    D) lower caromium level

  17. Which welding process and mode is more susceptible to lack of sidewall fusion?
    A) MAG Dip
    B) SAW DC +
    C) MAG Spray
    D) TIG Pulsed

  18. The welding procedure calls for a minimum of 50˚C preheat: you notice the welder is using an oxy-acetylene cutting torch to preheat butt weld joint, what course of action would you take?
    A) I would check the preheat with a temperature indicating crayon (tempelstick) to ensure it is correct
    B) I would stop him and insist he used an approved method which is nominated on the WPS
    C) It is acceptable to use this method of applying preheat so there is no problem
    D) As long as he had a neutral flame it would be acceptable

  19. During root welding. Which of the following would be the main cause of excess penetration?
    A) The root gap is too small in accordance with WPS
    B) Preheat not used
    C) The current is too high
    D) Root face is too large

  20. Asymmetrical weld symbols to ISO 2553 are:
    A) The same both sides of the arrow
    B) Different each side of the arrow
    C) Show fillet welds only
    D) Show butt welds only

  21. What information should be recorded as a minimum on a completed production weld?
    A) Size and type of electrode used
    B) Welding supervisor’s name
    C) Welder’s identification, date and weld number
    D) Welding inspectors name

  22. A ‘weld all around’ symbol is not required when:
    A) Indicating a circumferential joint
    B) Indicating a pipe to pipe butt weld
    C) Indicating a nozzle to shell weld
    D) All of the above

  23. What would be the most likely SAW flux type for welding medium carbon steel which requires impact testing:
    A) Callulosic
    B) Rutile
    C) Fused
    D) Agglomerated

  24. Which one of these statements is true concerning lamellar tearing?
    A) As material gets thicker the ductility decreases
    B) As materials gets thicker the resistance to Lamellar tearing improves
    C) As materials gets thicker the ductility improves
    D) Thick materials don’t suffer from Lamellar tearing

  25. Which of the following defects are not associated with the SAW process?
    A) Centreline cracking
    B) Chevron cracking
    C) Copper inclusions
    D) Tungsten inclusions

  26. Clustered porosity found internally in the body of an MMA weld is usually associated with:
    A) Poor inter-pass cleaning
    B) The open circuit current being too high
    C) Poor stop start technique or damp electrode coating
    D) Low open circuit voltage

  27. In which of the following modes of transfer is inductance usually a variable parameter in welding process 135 ?
    A) Dip transfer
    B) Spray transfer
    C) Pulse transfer
    D) Globular transfer

  28. What are the three metal transfer modes when using 131/135?
    A) Dip, drop and drag
    B) Trailing, vertical, and leading
    C) Pulse, dip and flood
    D) Dip, spray and pulse

  29. A 300mm diameter pipe, 10mm wall thickness is to be radiographically tested using the double wall single image technique (DWSI). the source to be used is Ir192. Which of the following statements is true?
    A) It should not be done as the thickness is below that recommended
    B) It would be better to use a cobalt 60 source in this instance
    C) There is no problem with the technique
    D) Only the double wall, double image technique should be used with Iridium

  30. Hot cracking occurs:
    A) In the HAZ
    B) In the parent metal
    C) In the weld
    D) All of the above

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2 Likes

Which the best answer.

My answer also PLATIC STATE.

Friction welding ( FRW ) is a solid-state welding process that generates heat through mechanical friction between workpieces in relative motion to one another, with the addition of a lateral force called “upset” to plastically displace and fuse the materials. Because no melting occurs, friction welding is not a fusion welding process in the traditional sense, but more of a forge welding technique. Friction welding is used with metals and thermoplastics in a wide variety of aviation and automotive applications.

1 Like

Answer D is correct.

1 Like

Agreed your answer

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