CWB Level 2 Closed Book | Questions with 100% Correct Answers | Updated & Verified
Question : To measure the strength of a welded joint what
mechanical test would you prescribe?
a) A transverse weld tension test.
b) A charpy test.
c) A CTOD test.
d) An all weld metal tension test.
e) A side bend test.
Correct answer: a) A transverse weld tension test.
Question : 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
Correct answer: e) Laser beam cutting
Question : 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?
- 1G
- 2G
- 3G
- 5G
- 6G
Correct answer: b) 2G
Question : 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.
Correct answer: b) Crack.
Question : Select the correct penetrameter thickness for 2%
sensitivity when radiographing a weldment 1.25 inches in thickness.
- 0.012 in.
- 0.015 in.
- 0.025 in.
- 0.030 in.
Correct answer: c) 0.025 in.
Question : Which of the following statements concerning
porosity is true?
a) Porosity cannot be trapped within a weld.
b) Porosity moves up through later passes and will show only
in a final pass.
c) Porosity is restricted to the centre line of a weld.
d) Porosity can result from faulty welder technique.
e) Porosity can be dissipated by an appropriate heat treatment.
Correct answer: d) Porosity can result from faulty welder
technique.
Question : An irregular, dense white spot is seen on the
radiograph of a weld. Assuming it was caused by the welding process used, which one of the processes below would be responsible?