CWB LEVEL 2 CLOSED BOOK
QUESTIONS WITH VERIFIED
ANSWERS
What mechanical test would you recommend to determine the strength of a
welded joint?
A test for transverse weld tension.
b) The Charpy test.
b) A CTOD examination.
c) A tension test for all weld metal.
e) A test for side bends. ANSWER a) A test for transverse weld tension.
When cutting carbon steel that is 12.5 mm (0.5 in) thick, use the cutting method
that will result in the narrowest heat-affected zone.
a) Cutting with oxygen-acetylene.
b) Cutting with an air-carbon arc.
b) Cutting using oxy-propane.
d) Arc cutting with plasma.
f) Cutting using a laser beam—ANSWER d) Cutting using a laser beam
Which of the following describes a welder test in which a vertical pipe
assembly is positioned and the junction is welded horizontally without the
assembly being rotated?
Answer for a) 1G, b) 2G, c) 3G, d) 5G, e) 6G
Which of the following flaws, regardless of magnitude or location, is typically
regarded as unacceptable?
, a) Porosity.
b) Break.
Insufficient penetration (c).
d) The process of lamination.
d) Burn-through. - ANSWER b) Crack.
When radiographing a weldment that is 1.25 inches thick, choose the
appropriate penetrameter thickness for 2% sensitivity.
a) 0.012 inches; b) 0.015 inches; c) 0.025 inches; and d) 0.030 inches.
ASSERTIVE c) 0.025 in.
Which of the following claims about porosity is accurate?
a) A weld cannot contain trapped porosity.
b) Only the last pass will reveal porosity, which increases with subsequent
passes.
c) A weld's porosity is limited to the center line.
d) Poor welding technique can lead to porosity.
e) A suitable heat treatment can dissipate porosity. ANSWER d) Poor welding
technique can lead to porosity.
The radiograph of a weld shows a dense, uneven white spot. Which of the
following procedures would be in charge if the welding procedure was the
cause?
a) SMAW procedure.
b) GTAW procedure.
b) The GMAW procedure.
d) The ST procedure.
e) The ESW procedure. ANSWER b) The GTAW procedure.
Which of these procedures is known to release ionizing radiation at levels that
are harmful to human health?
Arc welding with shielded metal (a) and plasma arc welding (b).
d) Using portable generator sets with high voltage.
d) Examination using radiography.
QUESTIONS WITH VERIFIED
ANSWERS
What mechanical test would you recommend to determine the strength of a
welded joint?
A test for transverse weld tension.
b) The Charpy test.
b) A CTOD examination.
c) A tension test for all weld metal.
e) A test for side bends. ANSWER a) A test for transverse weld tension.
When cutting carbon steel that is 12.5 mm (0.5 in) thick, use the cutting method
that will result in the narrowest heat-affected zone.
a) Cutting with oxygen-acetylene.
b) Cutting with an air-carbon arc.
b) Cutting using oxy-propane.
d) Arc cutting with plasma.
f) Cutting using a laser beam—ANSWER d) Cutting using a laser beam
Which of the following describes a welder test in which a vertical pipe
assembly is positioned and the junction is welded horizontally without the
assembly being rotated?
Answer for a) 1G, b) 2G, c) 3G, d) 5G, e) 6G
Which of the following flaws, regardless of magnitude or location, is typically
regarded as unacceptable?
, a) Porosity.
b) Break.
Insufficient penetration (c).
d) The process of lamination.
d) Burn-through. - ANSWER b) Crack.
When radiographing a weldment that is 1.25 inches thick, choose the
appropriate penetrameter thickness for 2% sensitivity.
a) 0.012 inches; b) 0.015 inches; c) 0.025 inches; and d) 0.030 inches.
ASSERTIVE c) 0.025 in.
Which of the following claims about porosity is accurate?
a) A weld cannot contain trapped porosity.
b) Only the last pass will reveal porosity, which increases with subsequent
passes.
c) A weld's porosity is limited to the center line.
d) Poor welding technique can lead to porosity.
e) A suitable heat treatment can dissipate porosity. ANSWER d) Poor welding
technique can lead to porosity.
The radiograph of a weld shows a dense, uneven white spot. Which of the
following procedures would be in charge if the welding procedure was the
cause?
a) SMAW procedure.
b) GTAW procedure.
b) The GMAW procedure.
d) The ST procedure.
e) The ESW procedure. ANSWER b) The GTAW procedure.
Which of these procedures is known to release ionizing radiation at levels that
are harmful to human health?
Arc welding with shielded metal (a) and plasma arc welding (b).
d) Using portable generator sets with high voltage.
d) Examination using radiography.
