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CWB Level 2 Visual Weld Inspector Exam 2025 –
Study Guide, Requirements, and Practice Questions
Prepare for the CWB Level 2 Visual Weld Inspector Exam (Canadian Welding Bureau) with
this complete 2025 study guide. Learn exam requirements, visual inspection techniques, sample
questions, pass rates, and tips to become a certified welding inspector in Canada. Ideal for
welders, quality inspectors, and NDT professionals looking to advance their careers.
CWB Level 2 Visual Weld Inspector Exam,
CWB welding inspector certification,
CWB Level 2 exam study guide 2025,
CWB visual inspection training,
Why is it possible for some multipass welds to have higher toughness than a single pass weld - ANSWER-
The passes in the multipass weld refine the underlying grain structure
The amount of dilution of weld metal by the parent metal - ANSWER-is mostly dependent on the joint
design and welding process
Restraint is usually higher in - ANSWER-Groove welds than in fillet welds
The G-BOP test is suitable to study crack susceptibility relating to - ANSWER-Hydrogen -cracking in the
heat affected zone
What is the heat input efficiency of the SMAW process - ANSWER-50 - 85
In some steels a very slow cooling rate may procedure a - ANSWER-soft, coarse grain structure with low
toughness
,2|Page
Sometimes an unwanted microstructure can be refined and altered by reheating - ANSWER-Into
normalizing range, where it will re-crystalize and transform back into small austenite grains
Hydrogen entrapped in the solidified weld metal - ANSWER-Can not escape into the atmosphere before
it causes cracking
According to CSA W59, the SAW process can be used without preheat if adequate energy input is
ensured. This is applicable when making - ANSWER-Fillet welds in one pass
When welding alloyed structural steels the risk of cracking depends mainly on - ANSWER-chromium and
nickel content
Welding codes normally require a waiting period between welding and inspection because - ANSWER-
hydrogen induced cracks (HICC) may occur several hours after the weld has solidified
What is the main reason for pre-heating - ANSWER-to reduce the hydrogen content of the weld by
diffusion
The tekkan test is suitable to study crack susceptibility in a - ANSWER-Groove weld
Lamellar tearing is most likely to occur in which of the following - ANSWER-thick T-groove welds
During welding, the proportion of heat energy that enters the plate is referred to as its efficiency. What is
the efficiency dependent on - ANSWER-The welding process
When the alloy content of a structural steel us sufficiently high that HAZ hardness cannot be controlled -
ANSWER-The only remaining factor which can be controlled is hydrogen content
In arc welding, the area of the base metal adjacent to the fusion line which is not melted is called -
ANSWER-The Heat Affected Zone
,3|Page
Process that are not hydrogen controlled may require - ANSWER-Higher preheat temperatures for
thicker plates
What joints provide the most dilution - ANSWER-The square groove weld with zero root opening
what electrode type is often required if stress relieving operation are planned on the fabricated structure
to maintain the same yield strength and tensile strength - ANSWER-Molybdenum-bearing electrodes
The type of microstructure and susceptibility to cracking of a heat affected zone depends on - ANSWER-
Hardenability of the steel and the weld cooling rate
The level of preheat required is typically derived from the - ANSWER-plate thickness and the carbon
content of the steel
Submerged arc welding has a process efficiency of - ANSWER-90% to 99%
Covered electrodes that use basic coatings - ANSWER-Reduce electrodes that use basic coatings
The extent to which grain growth in HAZ occurs depends on - ANSWER-The energy input
For given set of welding parameters, an increase in travel speed will - ANSWER-Decrease the heat input
When weldling structural steels the main reason for preheating is - ANSWER-to allow hydrogen to escape
Crack can form in the parent material beneath the weld. This form of cracking is called - ANSWER-
Lamellar tearing
Good fracture toughness normally requires - ANSWER-A fine grain structure
, 4|Page
The solidification structure that results from a slow welding speed can be described as - ANSWER-A short
weld pool with solidifying crystals growing from the back of the pool
Beyond a certain thickness the cooling rate is independent of thickness. At about what thickness does
this occur in carbon manganese steels - ANSWER-38mm (1-1/2")
Steels can be grouped into three zones based on their carbon content and carbon equivalent. The HAZ
hardness of which group of steels can be controlled by cooling rate - ANSWER-Zone 2
In general, the higher the heat input - ANSWER-The slower the weld cooling rate
Steels can be grouped into three zones based on their carbon content and carbon equivalent. Steels in
which Zone are not prone to hydrogen cracking - ANSWER-Zone 1
Heat input from welding - ANSWER-determines the amount of component distortion during phase
transformations
Hydrogen cracking in carbon manganese steels - ANSWER-Can occur in many areas of the welds
An Arc of 300 amps and 30 volts will produce - ANSWER-9000 joules per second (300 x 30)
The peak temperature within the heat affected zone changes with distance from the fusion line. What
peak temperature is exceeded in partially transformed region - ANSWER-723
According to CSA W59, a damaged container of low alloy SMAW electrodes must be - ANSWER-re-baked
at temperatures between 230 C and 260 C
During arc welding there is a zone adjacent to the weld metal that reaches high temperatures but does
not melt. What is the name of this region - ANSWER-Heat affected zone
Not all the heat energy produced during welding will enter the plate as heat energy. What is this
phenomenon known as - ANSWER-the efficiency
CWB Level 2 Visual Weld Inspector Exam 2025 –
Study Guide, Requirements, and Practice Questions
Prepare for the CWB Level 2 Visual Weld Inspector Exam (Canadian Welding Bureau) with
this complete 2025 study guide. Learn exam requirements, visual inspection techniques, sample
questions, pass rates, and tips to become a certified welding inspector in Canada. Ideal for
welders, quality inspectors, and NDT professionals looking to advance their careers.
CWB Level 2 Visual Weld Inspector Exam,
CWB welding inspector certification,
CWB Level 2 exam study guide 2025,
CWB visual inspection training,
Why is it possible for some multipass welds to have higher toughness than a single pass weld - ANSWER-
The passes in the multipass weld refine the underlying grain structure
The amount of dilution of weld metal by the parent metal - ANSWER-is mostly dependent on the joint
design and welding process
Restraint is usually higher in - ANSWER-Groove welds than in fillet welds
The G-BOP test is suitable to study crack susceptibility relating to - ANSWER-Hydrogen -cracking in the
heat affected zone
What is the heat input efficiency of the SMAW process - ANSWER-50 - 85
In some steels a very slow cooling rate may procedure a - ANSWER-soft, coarse grain structure with low
toughness
,2|Page
Sometimes an unwanted microstructure can be refined and altered by reheating - ANSWER-Into
normalizing range, where it will re-crystalize and transform back into small austenite grains
Hydrogen entrapped in the solidified weld metal - ANSWER-Can not escape into the atmosphere before
it causes cracking
According to CSA W59, the SAW process can be used without preheat if adequate energy input is
ensured. This is applicable when making - ANSWER-Fillet welds in one pass
When welding alloyed structural steels the risk of cracking depends mainly on - ANSWER-chromium and
nickel content
Welding codes normally require a waiting period between welding and inspection because - ANSWER-
hydrogen induced cracks (HICC) may occur several hours after the weld has solidified
What is the main reason for pre-heating - ANSWER-to reduce the hydrogen content of the weld by
diffusion
The tekkan test is suitable to study crack susceptibility in a - ANSWER-Groove weld
Lamellar tearing is most likely to occur in which of the following - ANSWER-thick T-groove welds
During welding, the proportion of heat energy that enters the plate is referred to as its efficiency. What is
the efficiency dependent on - ANSWER-The welding process
When the alloy content of a structural steel us sufficiently high that HAZ hardness cannot be controlled -
ANSWER-The only remaining factor which can be controlled is hydrogen content
In arc welding, the area of the base metal adjacent to the fusion line which is not melted is called -
ANSWER-The Heat Affected Zone
,3|Page
Process that are not hydrogen controlled may require - ANSWER-Higher preheat temperatures for
thicker plates
What joints provide the most dilution - ANSWER-The square groove weld with zero root opening
what electrode type is often required if stress relieving operation are planned on the fabricated structure
to maintain the same yield strength and tensile strength - ANSWER-Molybdenum-bearing electrodes
The type of microstructure and susceptibility to cracking of a heat affected zone depends on - ANSWER-
Hardenability of the steel and the weld cooling rate
The level of preheat required is typically derived from the - ANSWER-plate thickness and the carbon
content of the steel
Submerged arc welding has a process efficiency of - ANSWER-90% to 99%
Covered electrodes that use basic coatings - ANSWER-Reduce electrodes that use basic coatings
The extent to which grain growth in HAZ occurs depends on - ANSWER-The energy input
For given set of welding parameters, an increase in travel speed will - ANSWER-Decrease the heat input
When weldling structural steels the main reason for preheating is - ANSWER-to allow hydrogen to escape
Crack can form in the parent material beneath the weld. This form of cracking is called - ANSWER-
Lamellar tearing
Good fracture toughness normally requires - ANSWER-A fine grain structure
, 4|Page
The solidification structure that results from a slow welding speed can be described as - ANSWER-A short
weld pool with solidifying crystals growing from the back of the pool
Beyond a certain thickness the cooling rate is independent of thickness. At about what thickness does
this occur in carbon manganese steels - ANSWER-38mm (1-1/2")
Steels can be grouped into three zones based on their carbon content and carbon equivalent. The HAZ
hardness of which group of steels can be controlled by cooling rate - ANSWER-Zone 2
In general, the higher the heat input - ANSWER-The slower the weld cooling rate
Steels can be grouped into three zones based on their carbon content and carbon equivalent. Steels in
which Zone are not prone to hydrogen cracking - ANSWER-Zone 1
Heat input from welding - ANSWER-determines the amount of component distortion during phase
transformations
Hydrogen cracking in carbon manganese steels - ANSWER-Can occur in many areas of the welds
An Arc of 300 amps and 30 volts will produce - ANSWER-9000 joules per second (300 x 30)
The peak temperature within the heat affected zone changes with distance from the fusion line. What
peak temperature is exceeded in partially transformed region - ANSWER-723
According to CSA W59, a damaged container of low alloy SMAW electrodes must be - ANSWER-re-baked
at temperatures between 230 C and 260 C
During arc welding there is a zone adjacent to the weld metal that reaches high temperatures but does
not melt. What is the name of this region - ANSWER-Heat affected zone
Not all the heat energy produced during welding will enter the plate as heat energy. What is this
phenomenon known as - ANSWER-the efficiency
