CWB COMPREHENSIVE QUESTIONS AND
SOLUTIONS
◉ Select the cutting process that would provide the narrowest
heat affected zone when cutting 12.5 mm (0.5 in) thick carbon
steel.
a) Oxy-acetylene cutting.
b) Air-carbon arc cutting.
c) Oxy-propane cutting.
d) Plasma arc cutting.
e) Laser beam cutting
Answer: e) Laser beam cutting
◉ Which of the following refers to a welder test where a pipe
assembly is placed vertically and the joint welded in the
horizontal position without rotating the assembly?
a) 1G
b) 2G
c) 3G
d) 5G
e) 6G
Answer: b) 2G
, ◉ Which of the following imperfections is normally considered as
unacceptable regardless of size or location?
a) Porosity.
b) Crack.
c) Inadequate penetration.
d) Lamination.
e) Burn-through.
Answer: b) Crack.
◉ Select the correct penetrameter thickness for 2% sensitivity
when radiographing a weldment 1.25 inches in thickness.
a) 0.012 in.
b) 0.015 in.
c) 0.025 in.
d) 0.030 in.
Answer: c) 0.025 in.
◉ Which of the following statements concerning porosity is true?
a) Porosity cannot be trapped within a weld.
SOLUTIONS
◉ Select the cutting process that would provide the narrowest
heat affected zone when cutting 12.5 mm (0.5 in) thick carbon
steel.
a) Oxy-acetylene cutting.
b) Air-carbon arc cutting.
c) Oxy-propane cutting.
d) Plasma arc cutting.
e) Laser beam cutting
Answer: e) Laser beam cutting
◉ Which of the following refers to a welder test where a pipe
assembly is placed vertically and the joint welded in the
horizontal position without rotating the assembly?
a) 1G
b) 2G
c) 3G
d) 5G
e) 6G
Answer: b) 2G
, ◉ Which of the following imperfections is normally considered as
unacceptable regardless of size or location?
a) Porosity.
b) Crack.
c) Inadequate penetration.
d) Lamination.
e) Burn-through.
Answer: b) Crack.
◉ Select the correct penetrameter thickness for 2% sensitivity
when radiographing a weldment 1.25 inches in thickness.
a) 0.012 in.
b) 0.015 in.
c) 0.025 in.
d) 0.030 in.
Answer: c) 0.025 in.
◉ Which of the following statements concerning porosity is true?
a) Porosity cannot be trapped within a weld.
