CWB LEVEL 2 CORE MAIN EXAMINATION
QUESTIONS AND ANSWERS SURE A+
✔✔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
✔✔27. An impact test is used to determine:
QUESTIONS AND ANSWERS SURE A+
✔✔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
✔✔27. An impact test is used to determine:
