CWB Welding Inspector Level 2
Certification 2025 — Study Guide, Practice
Test Questions, and Exam Preparation
Get ready for the CWB Welding Inspector Level 2 Certification Exam 2025 with the most up-
to-date study guide, sample questions, and preparation materials. Learn advanced welding
inspection techniques, quality assurance standards, codes, and procedures to successfully
pass your CWB Level 2 exam and advance your welding career.
• CWB Welding Inspector Level 2 exam 2025
• Canadian Welding Bureau Level 2 certification
• CWB Level 2 study guide
In GTAW, DCEN welding, ____ percent of the heat is directed to where the arc meets the workpiece -
ANSWER-70
In GTAW, DCEP welding, 70 percent of the heat is directed via current flow to where the arc meets the
____ - ANSWER-Electrode
In GTAW setup up for DCEN, what term best describe the tungsten electrode in the welding circuit? -
ANSWER-Cathode
When polarity is reversed (DCEP) the _____ becomes the cathode - ANSWER-workpiece
The weld pool cannot easily emit electrons because the molten weld pool is at a much lower ______
than the tungsten and will resist the release of electrons - ANSWER-Temperature
,GTAW setup for DCEN produces welds with penetration that can be described as what? - ANSWER-Deep
and narrow
GTAW setup for DCEP produces welds with penetration that can be described as what? - ANSWER-
shallow and wide
GTAW setup for AC produces welds with penetration that can be described as what compared to
DCEP/DCEN? - ANSWER-medium
The heat balance of consumable electrode processes as in SMAW differs from that of non-consumable
tungsten arcs. A greater amount of heat is generated at the _____ rather than the ____. - ANSWER-
cathode, anode
When using GMAW, ____ is the polarity of choice as it leads to greater heat generation at the workpiece
- ANSWER-DCEP
an arc made between the electrode and constricting nozzle, excluding the workpiece from the electrical
circuit - ANSWER-non transferred arc
A welding arc is formed when ___ ___ is forced to flow across a gap between two electrodes at a
relatively low voltage - ANSWER-high current
power sources can be classified as constant current, constant voltage or _____ - ANSWER-both
thee volt-ampere curve of a constant current pwoer source is described as _____ - ANSWER-drooping
In any arc welding setup, there is a continuous drop in ____ from the lower-most point of the contact
between the contact tip and the wire, to the molten weld pool or workpiece - ANSWER-voltage
There is a jet-like flow of ___ ___ in the arc column which gives it some stiffness and force. Allow the
welder to manipulate and direct molten metal at the desired location - ANSWER-ionized gases
, ___ ___ is a critical and controllable parameter, which is directly related to the arc voltage - ANSWER-Arc
length
Arc blow is likely to cause what type of weld flaws? - ANSWER-incomplete fusion
Since pinch force on the electrode increase with the square of the current, smaller and smaller droplets
are detached as ____ increases - ANSWER-current
_____ ______ can have a significant effect on the shape of the weld bead and depth of penetration -
ANSWER-Electrode polarity
what kind of stainless steel is still susceptible to hydrogen induced cold cracking? - ANSWER-Martensitic
What does HICC stand for? - ANSWER-hydrogen induced cold cracking
What are the two main reasons transformer/rectifier power sources are becoming less than popular
than inverter types? - ANSWER-weight and power consumption
What relatively new welding polarity configuration can achieve reduced heat input and lower distortion
while still achieving good penetration and fusion, and also reliably weld in all positions? - ANSWER-
Pulsed DCEN
The delay in re-ignition of the arc caused by switching from DCEN to DCEP, due to the inability for the
weld pool to effectively emit electrons is called? - ANSWER-Partial rectification
_____ wave output power sources were developed to increase arc stability by altering circuitry and
attempt to eliminate the portion of the AC sine wave that was not emitting electrons (partial
rectification) - ANSWER-Square
Certification 2025 — Study Guide, Practice
Test Questions, and Exam Preparation
Get ready for the CWB Welding Inspector Level 2 Certification Exam 2025 with the most up-
to-date study guide, sample questions, and preparation materials. Learn advanced welding
inspection techniques, quality assurance standards, codes, and procedures to successfully
pass your CWB Level 2 exam and advance your welding career.
• CWB Welding Inspector Level 2 exam 2025
• Canadian Welding Bureau Level 2 certification
• CWB Level 2 study guide
In GTAW, DCEN welding, ____ percent of the heat is directed to where the arc meets the workpiece -
ANSWER-70
In GTAW, DCEP welding, 70 percent of the heat is directed via current flow to where the arc meets the
____ - ANSWER-Electrode
In GTAW setup up for DCEN, what term best describe the tungsten electrode in the welding circuit? -
ANSWER-Cathode
When polarity is reversed (DCEP) the _____ becomes the cathode - ANSWER-workpiece
The weld pool cannot easily emit electrons because the molten weld pool is at a much lower ______
than the tungsten and will resist the release of electrons - ANSWER-Temperature
,GTAW setup for DCEN produces welds with penetration that can be described as what? - ANSWER-Deep
and narrow
GTAW setup for DCEP produces welds with penetration that can be described as what? - ANSWER-
shallow and wide
GTAW setup for AC produces welds with penetration that can be described as what compared to
DCEP/DCEN? - ANSWER-medium
The heat balance of consumable electrode processes as in SMAW differs from that of non-consumable
tungsten arcs. A greater amount of heat is generated at the _____ rather than the ____. - ANSWER-
cathode, anode
When using GMAW, ____ is the polarity of choice as it leads to greater heat generation at the workpiece
- ANSWER-DCEP
an arc made between the electrode and constricting nozzle, excluding the workpiece from the electrical
circuit - ANSWER-non transferred arc
A welding arc is formed when ___ ___ is forced to flow across a gap between two electrodes at a
relatively low voltage - ANSWER-high current
power sources can be classified as constant current, constant voltage or _____ - ANSWER-both
thee volt-ampere curve of a constant current pwoer source is described as _____ - ANSWER-drooping
In any arc welding setup, there is a continuous drop in ____ from the lower-most point of the contact
between the contact tip and the wire, to the molten weld pool or workpiece - ANSWER-voltage
There is a jet-like flow of ___ ___ in the arc column which gives it some stiffness and force. Allow the
welder to manipulate and direct molten metal at the desired location - ANSWER-ionized gases
, ___ ___ is a critical and controllable parameter, which is directly related to the arc voltage - ANSWER-Arc
length
Arc blow is likely to cause what type of weld flaws? - ANSWER-incomplete fusion
Since pinch force on the electrode increase with the square of the current, smaller and smaller droplets
are detached as ____ increases - ANSWER-current
_____ ______ can have a significant effect on the shape of the weld bead and depth of penetration -
ANSWER-Electrode polarity
what kind of stainless steel is still susceptible to hydrogen induced cold cracking? - ANSWER-Martensitic
What does HICC stand for? - ANSWER-hydrogen induced cold cracking
What are the two main reasons transformer/rectifier power sources are becoming less than popular
than inverter types? - ANSWER-weight and power consumption
What relatively new welding polarity configuration can achieve reduced heat input and lower distortion
while still achieving good penetration and fusion, and also reliably weld in all positions? - ANSWER-
Pulsed DCEN
The delay in re-ignition of the arc caused by switching from DCEN to DCEP, due to the inability for the
weld pool to effectively emit electrons is called? - ANSWER-Partial rectification
_____ wave output power sources were developed to increase arc stability by altering circuitry and
attempt to eliminate the portion of the AC sine wave that was not emitting electrons (partial
rectification) - ANSWER-Square
