CWB Level 2 Closed Book9
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. - ANSWERS-a) A transverse weld tension test.
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 - ANSWERS-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 - ANSWERS-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. - ANSWERS-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. - ANSWERS-c) 0.025 in.
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. - ANSWERS-d) Porosity can
result from faulty welder technique.
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. - ANSWERS-a) A transverse weld tension test.
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 - ANSWERS-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 - ANSWERS-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. - ANSWERS-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. - ANSWERS-c) 0.025 in.
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. - ANSWERS-d) Porosity can
result from faulty welder technique.
