CWB Level 2 Closed Book CORRECT
100%
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. - ANSWERa) A transverse weld tension test.
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 - ANSWERb) 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. - ANSWERb) Crack.
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 - ANSWERe) Laser beam cutting
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. - ANSWERc) 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. - ANSWERd)
Porosity can result from faulty welder technique.
Reverse polarity refers to the use of a:
a) AC power source, electrode +
b) DC power source, electrode +
c) AC power source, electrode -
d) DC power source, electrode - - ANSWERb) DC power source, electrode +
Which welding process(es) can result in metallic inclusions in the weld?
a) SMAW.
b) FCAW.
c) GMAW.
d) GTAW.
e) SAW - ANSWERd) GTAW.
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?
a) SMAW process.
b) GTAW process.
c) GMAW process.
d) ST process.
e) ESW process. - ANSWERb) GTAW process.
Which of the following operations is known to result in the emission of ionizing
radiation at levels dangerous to human health?
a) Shielded metal arc welding.
b) Plasma arc welding.
c) Operation of high voltage portable generator sets.
d) Radiographic inspection.
e) Electroslag and electrogas welding. - ANSWERd) Radiographic inspection.
The ultrasonic transducer is pressed against the plate of a welded joint. The sound
travels longitudinally through the plate to the opposite side. The signal seen on the
UT screen that comes from this opposite side of the plate:
a) Is the initial pulse signal.
b) Is the back reflection signal.
100%
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. - ANSWERa) A transverse weld tension test.
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 - ANSWERb) 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. - ANSWERb) Crack.
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 - ANSWERe) Laser beam cutting
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. - ANSWERc) 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. - ANSWERd)
Porosity can result from faulty welder technique.
Reverse polarity refers to the use of a:
a) AC power source, electrode +
b) DC power source, electrode +
c) AC power source, electrode -
d) DC power source, electrode - - ANSWERb) DC power source, electrode +
Which welding process(es) can result in metallic inclusions in the weld?
a) SMAW.
b) FCAW.
c) GMAW.
d) GTAW.
e) SAW - ANSWERd) GTAW.
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?
a) SMAW process.
b) GTAW process.
c) GMAW process.
d) ST process.
e) ESW process. - ANSWERb) GTAW process.
Which of the following operations is known to result in the emission of ionizing
radiation at levels dangerous to human health?
a) Shielded metal arc welding.
b) Plasma arc welding.
c) Operation of high voltage portable generator sets.
d) Radiographic inspection.
e) Electroslag and electrogas welding. - ANSWERd) Radiographic inspection.
The ultrasonic transducer is pressed against the plate of a welded joint. The sound
travels longitudinally through the plate to the opposite side. The signal seen on the
UT screen that comes from this opposite side of the plate:
a) Is the initial pulse signal.
b) Is the back reflection signal.
