CWB FINAL EXAM WITH COMPLETE SOLUTION RATED
A+ 100% VERIFIED CORRECT NEW EDITION JUST
RELEASED 2026
1.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. - Ans a) A transverse weld tension test
2. Select the cu$ng process that would provide the narrowest heat affected zone when cu$ng
12.5 mm (0.5 in) thick carbon steel.
a) Oxy-acetylene cu$ng.
b) Air-carbon arc cu$ng.
c) Oxy-propane cu$ng.
d) Plasma arc cu$ng.
e) Laser beam cu$ng - Ans e) Laser beam cu$ng
3. Which of the following refers to a welder test where a pipe assembly is placed ver0cally and
the joint welded in the horizontal posi0on without rota0ng the assembly?
a) 1G
b) 2G
c) 3G
d) 5G
e) 6G - Ans b) 2G
, 4. Which of the following imperfec0ons is normally considered as unacceptable regardless of
size or loca0on?
a) Porosity.
b) Crack.
c) Inadequate penetra0on.
d) Lamina0on.
e) Burn-through. - Ans b) Crack.
5. Select the correct penetrameter thickness for 2% sensi0vity 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. - Ans 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. - Ans d) Porosity can result
from faulty welder technique.
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. - Ans b) GTAW process.
8. Which of the following opera0ons is known to result in the emission of ionizing radia0on at
levels dangerous to human health?
A) shield metal arc welding.
B) Plasma arc welding.
C) Opera0on of high voltage portable generator sets.
d) Radiographic inspec0on.
e) Electroslag and electrogas welding. - Ans d) Radiographic inspec0on.
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 ini0al pulse signal.
b) Is the back reflec0on signal.
c) Is the front reflec0on signal.
d) Must be equal in amplitude to any defect signal.
e) Cannot be used for establishing the thickness of the material under test. - Ans b) Is the back
reflec0on signal.
11. Which of the following is a stainless steel electrode?
a) E4918-1
b) E4918-A1
c) E4818
d) E308-16
, e) E4111 - Ans d) E308-16
12. 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- - Ans b) DC power source, electrode+
13. Which welding process(es) can result in metallic inclusions in the weld?
a) SMAW.
b) FCAW.
c) GMAW.
d) GTAW
e) SAW - Ans d) GTAW
14. In producing a drawing for a scale of 1:50, what would be the distance represented by a
distance on the drawing of 6 em?
a) 12 em.
b) 30 em.
c) 50 em.
d) 240 em.
e) 300 em. - Ans e) 300 em.
15. As a general rule, weld discon0nui0es detected by ultrasonic tes0ng are accepted or
rejected on the basis of:
a) Ver0cal linearity.
b) Time base analysis.
A+ 100% VERIFIED CORRECT NEW EDITION JUST
RELEASED 2026
1.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. - Ans a) A transverse weld tension test
2. Select the cu$ng process that would provide the narrowest heat affected zone when cu$ng
12.5 mm (0.5 in) thick carbon steel.
a) Oxy-acetylene cu$ng.
b) Air-carbon arc cu$ng.
c) Oxy-propane cu$ng.
d) Plasma arc cu$ng.
e) Laser beam cu$ng - Ans e) Laser beam cu$ng
3. Which of the following refers to a welder test where a pipe assembly is placed ver0cally and
the joint welded in the horizontal posi0on without rota0ng the assembly?
a) 1G
b) 2G
c) 3G
d) 5G
e) 6G - Ans b) 2G
, 4. Which of the following imperfec0ons is normally considered as unacceptable regardless of
size or loca0on?
a) Porosity.
b) Crack.
c) Inadequate penetra0on.
d) Lamina0on.
e) Burn-through. - Ans b) Crack.
5. Select the correct penetrameter thickness for 2% sensi0vity 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. - Ans 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. - Ans d) Porosity can result
from faulty welder technique.
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. - Ans b) GTAW process.
8. Which of the following opera0ons is known to result in the emission of ionizing radia0on at
levels dangerous to human health?
A) shield metal arc welding.
B) Plasma arc welding.
C) Opera0on of high voltage portable generator sets.
d) Radiographic inspec0on.
e) Electroslag and electrogas welding. - Ans d) Radiographic inspec0on.
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 ini0al pulse signal.
b) Is the back reflec0on signal.
c) Is the front reflec0on signal.
d) Must be equal in amplitude to any defect signal.
e) Cannot be used for establishing the thickness of the material under test. - Ans b) Is the back
reflec0on signal.
11. Which of the following is a stainless steel electrode?
a) E4918-1
b) E4918-A1
c) E4818
d) E308-16
, e) E4111 - Ans d) E308-16
12. 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- - Ans b) DC power source, electrode+
13. Which welding process(es) can result in metallic inclusions in the weld?
a) SMAW.
b) FCAW.
c) GMAW.
d) GTAW
e) SAW - Ans d) GTAW
14. In producing a drawing for a scale of 1:50, what would be the distance represented by a
distance on the drawing of 6 em?
a) 12 em.
b) 30 em.
c) 50 em.
d) 240 em.
e) 300 em. - Ans e) 300 em.
15. As a general rule, weld discon0nui0es detected by ultrasonic tes0ng are accepted or
rejected on the basis of:
a) Ver0cal linearity.
b) Time base analysis.
