CWI ALL COMPREHENSIVE STUDY
GUIDE 2026 FULL QUESTIONS AND
SOLUTIONS GRADED A+
◍ A back weld is applied?.
Answer: After the front side is welded
◍ Which of the following is a capability of a CAWI?.
Answer: Perform visual examination under the supervision of a CWI or
SCWI
◍ AWS.
Answer: American Welding Society
◍ Which NDT method uses an alternating current coil?.
Answer: MT / ET
◍ NDE.
Answer: Nondestructive Examination
◍ SMAW.
Answer: Shielded Metal Arc Welding
◍ The amount of time needed for experience if a person has an
Engineering/Technical or physical science degree is?.
Answer: One year
◍ A document which covers safety in welding and cutting is:.
Answer: ANSI/ASC Z49.1
◍ The weld discontinuity that results from improper termination of the
welding arc is referred to as:.
Answer: Crater Crack
,◍ GMAW.
Answer: Gas Metal Arc Welding (MIG)
◍ The groove angle is the.
Answer: Total included angle of the groove between work pieces
◍ GTAW.
Answer: Gas Tungsten Arc Welding
◍ OFC.
Answer: Oxyfuel Gas Cutting
◍ Which of the following gases can be used as shielding gases for GMAW?.
Answer: Carbon dioxide/ argon-oxygen/ argon-carbon dioxide/ argon
◍ capillary action.
Answer: the force by which a liquid, in contact with a solid, is distributed
between closely fitted saying surface of the joint to be brazed or soldered
◍ Discontinuity.
Answer: any interruption of a typical structure of a material; not necessarily
a defect
◍ Incomplete fusion.
Answer: a weld discontinuity in which fusion did not occur between weld
metal and fusion faces or adjoining weld beads
◍ Tolerances are required on drawings to:.
Answer: Guide the inspector on permissible size variations / show the total
amount of variation permitted from the design size
◍ Incomplete joint penetration.
Answer: a joint root condition in a groove weld in which weld metal does
not extend through the joint thickness
◍ A number in parentheses just above/below the weld symbol in a welding
symbol for slot welds describes.
Answer: The number of welds required
, ◍ Porosity.
Answer: cavity-type discontinuities formed by gas entrapment during
solidification
◍ Shielding.
Answer: protecting from contamination
◍ Why should interpass cleaning be verified?.
Answer: To ensure slag removal / to avoid welding over cracks/ to avoid
subsequent porosity/ to avoid subsequent incomplete fusion
◍ Why is CO2 widely used as a shielding gas component for FCAW?.
Answer: It promotes deep penetration and is lower in cost
◍ A set of "codes" is always considered.
Answer: Mandatory
◍ The welding inspector is a responsible person involved in the determination
of weld quality in accordance with....
Answer: Applicable codes and or specifications
◍ Slag.
Answer: A nonmetallic product resulting from the mutual dissolution of flux
and nonmetallic impurities in some welding and brazing processes.
◍ Undercut.
Answer: A groove melted into the base metal adjacent to the weld toe or
weld root and left unfilled by weld metal.
◍ Spatter.
Answer: The metal particles expelled during fusion welding that do not form
a part of the weld.
◍ Weld the U groove.
Answer: Of the following, what is the first operation specified.
◍ If a CWI is not qualified by training, experience and capability to perform a
specific assignment, what should the CWI do?.
Answer: Inform the supervisor and not perform that specific assignment
GUIDE 2026 FULL QUESTIONS AND
SOLUTIONS GRADED A+
◍ A back weld is applied?.
Answer: After the front side is welded
◍ Which of the following is a capability of a CAWI?.
Answer: Perform visual examination under the supervision of a CWI or
SCWI
◍ AWS.
Answer: American Welding Society
◍ Which NDT method uses an alternating current coil?.
Answer: MT / ET
◍ NDE.
Answer: Nondestructive Examination
◍ SMAW.
Answer: Shielded Metal Arc Welding
◍ The amount of time needed for experience if a person has an
Engineering/Technical or physical science degree is?.
Answer: One year
◍ A document which covers safety in welding and cutting is:.
Answer: ANSI/ASC Z49.1
◍ The weld discontinuity that results from improper termination of the
welding arc is referred to as:.
Answer: Crater Crack
,◍ GMAW.
Answer: Gas Metal Arc Welding (MIG)
◍ The groove angle is the.
Answer: Total included angle of the groove between work pieces
◍ GTAW.
Answer: Gas Tungsten Arc Welding
◍ OFC.
Answer: Oxyfuel Gas Cutting
◍ Which of the following gases can be used as shielding gases for GMAW?.
Answer: Carbon dioxide/ argon-oxygen/ argon-carbon dioxide/ argon
◍ capillary action.
Answer: the force by which a liquid, in contact with a solid, is distributed
between closely fitted saying surface of the joint to be brazed or soldered
◍ Discontinuity.
Answer: any interruption of a typical structure of a material; not necessarily
a defect
◍ Incomplete fusion.
Answer: a weld discontinuity in which fusion did not occur between weld
metal and fusion faces or adjoining weld beads
◍ Tolerances are required on drawings to:.
Answer: Guide the inspector on permissible size variations / show the total
amount of variation permitted from the design size
◍ Incomplete joint penetration.
Answer: a joint root condition in a groove weld in which weld metal does
not extend through the joint thickness
◍ A number in parentheses just above/below the weld symbol in a welding
symbol for slot welds describes.
Answer: The number of welds required
, ◍ Porosity.
Answer: cavity-type discontinuities formed by gas entrapment during
solidification
◍ Shielding.
Answer: protecting from contamination
◍ Why should interpass cleaning be verified?.
Answer: To ensure slag removal / to avoid welding over cracks/ to avoid
subsequent porosity/ to avoid subsequent incomplete fusion
◍ Why is CO2 widely used as a shielding gas component for FCAW?.
Answer: It promotes deep penetration and is lower in cost
◍ A set of "codes" is always considered.
Answer: Mandatory
◍ The welding inspector is a responsible person involved in the determination
of weld quality in accordance with....
Answer: Applicable codes and or specifications
◍ Slag.
Answer: A nonmetallic product resulting from the mutual dissolution of flux
and nonmetallic impurities in some welding and brazing processes.
◍ Undercut.
Answer: A groove melted into the base metal adjacent to the weld toe or
weld root and left unfilled by weld metal.
◍ Spatter.
Answer: The metal particles expelled during fusion welding that do not form
a part of the weld.
◍ Weld the U groove.
Answer: Of the following, what is the first operation specified.
◍ If a CWI is not qualified by training, experience and capability to perform a
specific assignment, what should the CWI do?.
Answer: Inform the supervisor and not perform that specific assignment
