CWB 2 ALL MODULE EXAM PAPER 2025/2026 QUESTIONS
WITH SOLUTIONS GRADED A+
✔✔It would be INCORRECT to say that peening:
A) Should not be used on the last pass
B) Puts surface of the weld in compression
C) Should not be used on root passes
D) Can be used to form the surface contour of the weld to the inspector`s satisfaction
E) Should be stopped before the weld surface starts to flake - ✔✔D) Can be used to
form the surface contour of the weld to the inspector`s satisfaction
✔✔To avoid longitudinal bending of a plate when it is being cut to width, you would:
A) Cool the outer edge with an air blast
B) Cut both edges at the same time
C) Dog the plate down away from the cut
D) Pre-bend the plate away from the cut
E) Slow down the cutting speed - ✔✔B) Cut both edges at the same time
✔✔The rate of energy consumption at which an electric lamp converts electrical energy
into heat and light is given by:
A) Volts x Watts
B) Volts x Amperage
C) Watts x Joules
D) Amperage x Watts - ✔✔B) Volts x Amperage
✔✔High-heat-input welds will typically have:
A) Large beads and large heat affected zones
B) Large beads and narrow heat affected zones
C) Small beads and large heat affected zones
D) Small beads and small heat affected zones - ✔✔A) Large beads and large heat
affected zones
✔✔Which of the following will have the greatest effect of the metallurgical changes that
occur within the HAZ?
A) The peak temperature reached
B) The welding amperage
C) The welding voltage
D) The contact tip-to-work distance - ✔✔A) The peak temperature reached
✔✔The final microstructure in the HAZ will depend on the
, A) Heat input
B) Inter-pass temperature
C) Preheat
D) All of the above - ✔✔D) All of the above
✔✔Which of the following will reduce the available hydrogen when welding operations
are planned?
A) Preheat
B) A coat of paint on the base material to be welded
C) Moisture on the electrode to be used
D) Grease on the plate surface to be welded - ✔✔A) Preheat
✔✔An example of a low restraint weld is a:
A) Corner joint
B) Set on nozzle
C) Tee joint
D) Fillet weld - ✔✔D) Fillet weld
✔✔The controlled thermal severity test (CTS) uses which type of weld?
A) Corner weld
B) Lap weld
C) Fillet weld
D) Groove weld - ✔✔C) Fillet weld
✔✔Which of the following precautions can be used to minimize the risk of lamellar
tearing?
A) Not allowing partially completed welds to cool
B) A block weld sequence
C) Buttering
D) All of the above - ✔✔D) All of the above
✔✔What does the term "basic" refer to with regards to welding flux?
A) The easily transfer oxygen into the solidifying weld
B) They do not easily transfer oxygen into the solidifying weld
C) They do not contain any alloying elements
D) They only contain carbon as an alloying element - ✔✔B) They do not easily transfer
oxygen into the solidifying weld
✔✔Stress relief temperatures for thick sections occur:
WITH SOLUTIONS GRADED A+
✔✔It would be INCORRECT to say that peening:
A) Should not be used on the last pass
B) Puts surface of the weld in compression
C) Should not be used on root passes
D) Can be used to form the surface contour of the weld to the inspector`s satisfaction
E) Should be stopped before the weld surface starts to flake - ✔✔D) Can be used to
form the surface contour of the weld to the inspector`s satisfaction
✔✔To avoid longitudinal bending of a plate when it is being cut to width, you would:
A) Cool the outer edge with an air blast
B) Cut both edges at the same time
C) Dog the plate down away from the cut
D) Pre-bend the plate away from the cut
E) Slow down the cutting speed - ✔✔B) Cut both edges at the same time
✔✔The rate of energy consumption at which an electric lamp converts electrical energy
into heat and light is given by:
A) Volts x Watts
B) Volts x Amperage
C) Watts x Joules
D) Amperage x Watts - ✔✔B) Volts x Amperage
✔✔High-heat-input welds will typically have:
A) Large beads and large heat affected zones
B) Large beads and narrow heat affected zones
C) Small beads and large heat affected zones
D) Small beads and small heat affected zones - ✔✔A) Large beads and large heat
affected zones
✔✔Which of the following will have the greatest effect of the metallurgical changes that
occur within the HAZ?
A) The peak temperature reached
B) The welding amperage
C) The welding voltage
D) The contact tip-to-work distance - ✔✔A) The peak temperature reached
✔✔The final microstructure in the HAZ will depend on the
, A) Heat input
B) Inter-pass temperature
C) Preheat
D) All of the above - ✔✔D) All of the above
✔✔Which of the following will reduce the available hydrogen when welding operations
are planned?
A) Preheat
B) A coat of paint on the base material to be welded
C) Moisture on the electrode to be used
D) Grease on the plate surface to be welded - ✔✔A) Preheat
✔✔An example of a low restraint weld is a:
A) Corner joint
B) Set on nozzle
C) Tee joint
D) Fillet weld - ✔✔D) Fillet weld
✔✔The controlled thermal severity test (CTS) uses which type of weld?
A) Corner weld
B) Lap weld
C) Fillet weld
D) Groove weld - ✔✔C) Fillet weld
✔✔Which of the following precautions can be used to minimize the risk of lamellar
tearing?
A) Not allowing partially completed welds to cool
B) A block weld sequence
C) Buttering
D) All of the above - ✔✔D) All of the above
✔✔What does the term "basic" refer to with regards to welding flux?
A) The easily transfer oxygen into the solidifying weld
B) They do not easily transfer oxygen into the solidifying weld
C) They do not contain any alloying elements
D) They only contain carbon as an alloying element - ✔✔B) They do not easily transfer
oxygen into the solidifying weld
✔✔Stress relief temperatures for thick sections occur:
