CWB Level 2 Exam Questions and
Answers 2025 – Complete Study Set REAL
EXAM!
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. 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. 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.
e) Cannot be used for establishing the thickness of the material under test. b) Is the back
reflection signal.
11. Which of the following is a stainless steel electrode?
a) E4918-1
b) E4918-A1
c) E4818
d) E308-16
e) E4111 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- 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 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. e) 300 em.
15. As a general rule, weld discontinuities detected by ultrasonic testing are accepted or rejected
on the basis of:
a) Vertical linearity.
b) Time base analysis.
c) Horizontal response data.
d) Noise to signal ratio.
e) Signal amplitude. e) Signal amplitude.
16. An advantage of an AC welding circuit is:
a) It is best used with large electrodes on thin materials.
b) It is best used with small electrodes on thin sections.
c) It helps to eliminate arc blow.
d) It minimizes internal undercut. c) It helps to eliminate arc blow.
17. The resistance of steel to failure by brittle fracture is commonly assessed by conducting a:
a) Rockwell C hardness test.
b) Tensile test.
c) Chemical analysis.
d) Hydrogen embrittlement test.
e) Notched bar impact test. e) Notched bar impact test.
18. Which one of the following SMAW electrodes is restricted to horizontal and flat position
welding?
a) EXX18
b) E4916
c) EXX10
d) E4924
e) E4914 d) E4924
19. The mechanical test used to determine the ability of a material to resist failure by brittle
fracture requires the use of:
a) A tensile test specimen.
, b) A bend test specimen.
c) A compression test specimen.
d) An impact test specimen .
e) A spectrographic test. d) An impact test specimen .
20. Select the electrode that would be best suited for welding high sulphur steels in the flat
position:
a) E4924
b) E4914
c) E4927
d) E4918 d) E4918
21. Two steel plates are to be welded together. Each plate has a bevel cut on the face to be
welded. What type of weld will be made?
a) Double bevel groove weld.
b) Double vee groove weld.
c) Single bevel groove weld.
d) Vee groove weld.
e) Flare bevel groove weld. d) Vee groove weld.
22. Which side of a fillet weld gauge is used for measuring the size of a concave faced fillet
weld?
a) Leg side.
b) Straight side.
c) Throat side
d) Face side.
e) Toe side. c) Throat side
23. A backing gas is used to:
a) Prevent root burn-through.
b) Reduce root concavity.
c) Support the molten root metal.
d) Prevent root oxide contamination. d) Prevent root oxide contamination.
24. A crack perpendicular to the length of the weld is called a:
a) Transverse crack .
b) Longitudinal crack.
c) Throat crack.
d) Underbead crack. a) Transverse crack .
25 Which of the following electrodes is classified as a basic electrode:
a) E-6010
b) E4914
c) All cellulosic electrodes.
d) Electrodes containing titania.
e) E4916 e) E4916
Answers 2025 – Complete Study Set REAL
EXAM!
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. 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. 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.
e) Cannot be used for establishing the thickness of the material under test. b) Is the back
reflection signal.
11. Which of the following is a stainless steel electrode?
a) E4918-1
b) E4918-A1
c) E4818
d) E308-16
e) E4111 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- 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 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. e) 300 em.
15. As a general rule, weld discontinuities detected by ultrasonic testing are accepted or rejected
on the basis of:
a) Vertical linearity.
b) Time base analysis.
c) Horizontal response data.
d) Noise to signal ratio.
e) Signal amplitude. e) Signal amplitude.
16. An advantage of an AC welding circuit is:
a) It is best used with large electrodes on thin materials.
b) It is best used with small electrodes on thin sections.
c) It helps to eliminate arc blow.
d) It minimizes internal undercut. c) It helps to eliminate arc blow.
17. The resistance of steel to failure by brittle fracture is commonly assessed by conducting a:
a) Rockwell C hardness test.
b) Tensile test.
c) Chemical analysis.
d) Hydrogen embrittlement test.
e) Notched bar impact test. e) Notched bar impact test.
18. Which one of the following SMAW electrodes is restricted to horizontal and flat position
welding?
a) EXX18
b) E4916
c) EXX10
d) E4924
e) E4914 d) E4924
19. The mechanical test used to determine the ability of a material to resist failure by brittle
fracture requires the use of:
a) A tensile test specimen.
, b) A bend test specimen.
c) A compression test specimen.
d) An impact test specimen .
e) A spectrographic test. d) An impact test specimen .
20. Select the electrode that would be best suited for welding high sulphur steels in the flat
position:
a) E4924
b) E4914
c) E4927
d) E4918 d) E4918
21. Two steel plates are to be welded together. Each plate has a bevel cut on the face to be
welded. What type of weld will be made?
a) Double bevel groove weld.
b) Double vee groove weld.
c) Single bevel groove weld.
d) Vee groove weld.
e) Flare bevel groove weld. d) Vee groove weld.
22. Which side of a fillet weld gauge is used for measuring the size of a concave faced fillet
weld?
a) Leg side.
b) Straight side.
c) Throat side
d) Face side.
e) Toe side. c) Throat side
23. A backing gas is used to:
a) Prevent root burn-through.
b) Reduce root concavity.
c) Support the molten root metal.
d) Prevent root oxide contamination. d) Prevent root oxide contamination.
24. A crack perpendicular to the length of the weld is called a:
a) Transverse crack .
b) Longitudinal crack.
c) Throat crack.
d) Underbead crack. a) Transverse crack .
25 Which of the following electrodes is classified as a basic electrode:
a) E-6010
b) E4914
c) All cellulosic electrodes.
d) Electrodes containing titania.
e) E4916 e) E4916
