Chapter 14

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  1. Accoding to the AWS Classification system for low carbon steel electrodes, and using E7018 as the example. What does the ‘E’ signify?
    a. Electric Arc welding
    b. Electrode
    c. Every use
    d. Current and polarity
    Electrode
  2. Accoding to the AWS Classification system for low carbon steel electrodes, and using E7018 as the example. What does the ‘70’ signify?
    a. welding position
    b. tensile strength
    c. electrode coating, current and polarity
    d. metal thickness
    tensile strength
  3. Accoding to the AWS Classification system for low carbon steel electrodes, and using E7018 as the example. What does the ‘1’ signify?
    a. welding position
    b. tensile strength
    c. electrode coating, current and polarity
    d. metal thickness
    welding position
  4. Accoding to the AWS Classification system for low carbon steel electrodes, and using E7018 as the example. What does the ‘8’ signify?
    a. welding position
    b. tensile strength
    c. electrode coating, current and polarity
    d. metal thickness
    electrode coating, current and polarity
  5. The submerged arc welding process (SAW) is a high deposition, high quality welding process widely used to join _____ sections in the flat, horizontal position.
    a. thin
    b. thick
    c. butt
    d. beveled
    thick
  6. In submerged arc welding the electrode is
    a. fed continuously from a coiled spool
    b. covered with a cellulose coating
    c. covered with iron powder
    d. made of finely crushed mineral
    e. known as flux
    fed continuously from a coiled spool
  7. Flux is:
    a. A substance to decrease the applied voltage
    b. A substance to remove oxides and impurities????
    c. A substance on the electrode to protect it from moisture and rusting
    d. A substance applied to the inside of a pipe joint to aid alignment
    e. A substance to shield the weld from the atmosphere
    A substance to shield the weld from the atmosphere
  8. ________ welding keeps the atmosphere from the weld bead by a blanket of granular flux
    a. fusion
    b. shielded metal arc
    c. machine
    d. submerged arc
    e. manual
    submerged arc
  9. The ___________________ joins metal by the heat of an arc between a nonconsumable tungsten electrode and the work piece, with or without the addition of a filler metal.
    a. Submerged Arc Welding process (SAW)
    b. Gas Tungsten Arc Welding process (GTAW)
    c. Gas Metal-Arc Welding process (GMAW)
    d. Reverse Metal-Arc Welding process (RMCW)
    Gas Tungsten Arc Welding process (GTAW)
  10. GTAW is particularly suited to the welding of _________ metals.
    a. similar
    b. exotic
    c. dissimilar
    d. cast
    dissimilar
  11. The __________________ is an arc-welding process, which produces the fusion of metals by heating them with an arc between a continuous filler metal (consumable) electrode and the work.
    a. Submerged Arc Welding process (SAW)
    b. Gas Tungsten Arc Welding process (GTAW)
    c. Gas Metal-Arc Welding process (GMAW)
    d. Reverse Metal-Arc Welding process (RMCW)
    Gas Metal-Arc Welding process (GMAW)
  12. _______________ is the only arc welding process capable of welding all commercial ferrous and non-ferrous alloys.
    a. Submerged Arc Welding process (SAW)
    b. Gas Tungsten Arc Welding process (GTAW)
    c. Gas Metal-Arc Welding process (GMAW)
    d. Reverse Metal-Arc Welding process (RMCW)
    Gas Metal-Arc Welding process (GMAW)
  13. The arc and molten weld metal is protected, from the atmosphere, by a flow of _____ or reactive gas.
    a. Air
    b. Inert
    c. Non-inert
    d. Hydrogen
    Inert
  14. The GMAW process is well suited to the _____ passes, on pipe welding.
    a. final
    b. mid
    c. root
    d. under
    root
  15. On pipe, larger than 51 mm, the ends are normally ______ welded together.
    a. lap
    b. butt
    c. electrode
    d. fit
    butt
  16. During the process of welding, ______ are set up in both the weld metal and in the base metal, adjacent to the weld.
    a. stresses
    b. cracks
    c. inclusions
    d. checks
    stresses
  17. One of the ways to minimize ________ in the welded joint is to preheat the parts to be welded.
    a. cracks
    b. stresses
    c. inclusions
    d. checks
    stresses
  18. Postweld heat treatment, often called ________ relieving, consists of uniformly heating the welded parts to a temperature sufficient to relieve most of the stresses created by the welding process.
    a. cracks
    b. stress
    c. inclusions
    d. checks
    stress
  19. __________ is a melting away of the parent metal which can alter reduce the thickness of the welded joint.
    a. Fusion
    b. Undercut
    c. Overlap
    d. Underfill
    Undercut
  20. Lack of _______, or more precisely, incomplete joint penetration, is a group of weld discontinuities where fusion did not occur between weld metal and the base metal or between overlapping weld beads.
    a. Fusion
    b. Undercut
    c. Overlap
    d. Underfill
    Fusion
  21. _________ is an excess of deposit metal, which is not fused to the base metal.
    a. Fusion
    b. Undercut
    c. Overlap
    d. Underfill
    Overlap
  22. ____________ is insufficient weld deposit, resulting in a reduction in the thickness of the groove.
    a. Fusion
    b. Undercut
    c. Overlap
    d. Underfill
    Underfill
  23. __________ is spherical or tube like defects, cavities, or voids caused by gases trapped inside the weld or gases that have evolved to the surface.
    a. Porosity
    b. Slag inclusions
    c. Cracks
    d. Checks
    Porosity
  24. _________________ are solid non-metallic inclusions entrapped below the surface in the weld metal or more often, between deposited weld metal and the base metal.
    a. Porosity
    b. Slag inclusions
    c. Cracks
    d. Checks
    Slag inclusions
  25. Planar type defects, such as _______ and lack of fusion, are sharp and pointed in shape and create severe notching and high potential for failure.
    a. Porosity
    b. Slag inclusions
    c. Cracks
    d. Checks
    Cracks
  26. To ensure the electrodes function as designed, they must be kept in baking ovens to remove any _________ content.
    a. hydrogen
    b. moisture
    c. carbon
    d. inert
    moisture
  27. A ______ is a non-destructive test method that shows defects in the interiors of the welds that would not be visible to the eye
    a. dye penetrant test
    b. tensile test
    c. bending test
    d. radiographic inspection
    e. ultrasonic Inspection
    radiographic inspection
  28. _______ makes use of short wave length radiations such as x-rays and gamma rays to penetrate the weld.
    a. ultrasonic inspection
    b. radiographic inspection
    c. tensile testing
    d. dye penetrant testing
    e. binding testing
    radiographic inspection
  29. ___________ involves directing high-frequency sound waves into the metal to detect fine cracks and defects
    a. dye penetrant testing
    b. radiographic inspection
    c. gamma ray inspection
    d. tensile testing
    e. ultrasonic inspection
    ultrasonic inspection
  30. Magnetic particle testing (MT) is an _________ technique for detecting flaws that are either surface, or subsurface.
    a. nondestructive
    b. destructive
    c. radiographic
    d. ultrasonic
    nondestructive
  31. The ________ must present a Pressure Welder’s Certificate of Competency, as proof of eligibility to take the performance qualification test.
    a. Welder
    b. Manufacturer
    c. Owner
    d. Operator
    Welder
  32. When a welder passes the required test, as set out in the ASME Code, he is issued with a:
    a. journey man's welding ticket
    b. power Engineering certificate
    c. performance qualification card
    d. pressure welder's certificate
    e. manufacturer’s license
    performance qualification card
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Chapter 14
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