CWB EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+
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
,6. 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
7. 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. - ANSWERS-b) GTAW process.
8. Which of the following operations is known to result in
the emission of ionizing radiation at levels dangerous to
human health?
A) shield metal arc welding.
B) Plasma arc welding.
C) Operation of high voltage portable generator sets.
d) Radiographic inspection.
e) Electroslag and electrogas welding. - ANSWERS-d)
Radiographic inspection.
9. 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.
c) Is the front reflection signal.
d) Must be equal in amplitude to any defect signal.
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST ALREADY
GRADED A+
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
,6. 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
7. 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. - ANSWERS-b) GTAW process.
8. Which of the following operations is known to result in
the emission of ionizing radiation at levels dangerous to
human health?
A) shield metal arc welding.
B) Plasma arc welding.
C) Operation of high voltage portable generator sets.
d) Radiographic inspection.
e) Electroslag and electrogas welding. - ANSWERS-d)
Radiographic inspection.
9. 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.
c) Is the front reflection signal.
d) Must be equal in amplitude to any defect signal.
