CWB Welding Inspector Level 2, Chapter 2 Exam 2025-2026, Exams of
Advanced Education
What is the term used to describe the following condition of lost corrosion
resistance?
"When certain stainless steels are heated between 500-850° C, carbides form
at the grain boundaries and cause a local depletion of chromium."
(A) Oxidization
(B) Increased toughness
(C) Solution heat treatment
(D) Sensitization - ANSWER(D) Sensitization
Note: Also known as "carbide precipitation" -- Chromium binds to carbides,
and "sweats out" at the grain boundaries
On a radiograph, undercut appears as a _________ line.
(A) light
,(B) dark - ANSWER(B) dark
What is the Canadian Standard for safety in welding? - ANSWERCSA W117.2
What is the typical three-phase input voltage in most Canadian welding
shops? - ANSWER600V
True or False: The cable from the workpiece back to the welding machine is
called the "ground lead". - ANSWERFalse. The correct term is the "work lead".
What is the type of radiation that can damage living cells? - ANSWERIonizing
Name two examples of ionizing radiation. - ANSWERX-rays and Gamma rays
What is the minimum suggested shade for a welding helmet when using 5/32
SMAW electrode at 150 A? - ANSWERShade 10
Approx. how far could spatter travel when welding/cutting from 2.5m high? -
ANSWERPossibly up to 6m
What is the toxic component contained in some copper alloys? -
ANSWERBeryllium
Which welding process will likely have the highest fume generation rate?
[SMAW / SAW / FCAW] - ANSWERFCAW
,What do the terms TLV and TWA stand for? - ANSWERTLV: Threshold limit
value
TWA: Time weighted average
The action of UV light on oxygen produces which toxic gas? - ANSWEROzone
Which common fuel gas has the widest range where it can become
flammable when mixed with air? - ANSWERAcetylene
What substance should you NEVER apply to a stiff pressure-adjusting screw
on an oxygen regulator? - ANSWEROil or grease
What is the maximum gauge pressure that acetylene should be used?
(kPa/psi) - ANSWER103 kPa (15 psi)
Which toxic gas is produced when welding on surfaces with chlorinated
hydrocarbon solvents? - ANSWERPhosgene gas
What is the typical max. OCV of an AC welding machine? - ANSWER80 V
In an isometric drawing, the lines (for width, length and depth) are inclined at
an angle of how many degrees? - ANSWER30°
What are the maximum number of views in an orthographic drawing? -
ANSWER6
, What are the two general classes of picture drawings? - ANSWERPerspective
and Isometric
What are the 5 basic joints? - ANSWER1) Butt
2) Corner
3) T
4) Lap
5) Edge
What are the 5 basic weld types? - ANSWER1) Groove
2) Fillet
3) Plug/Slot
4) Surfacing
5) Edge
Plasma cutting torch temp can reach temperatures of __________ ° Celsius. -
ANSWER30,000
True or False: All plasma arc cutting equipment is operated using DCEN. -
ANSWERTrue
True or False: Stainless steel can be readily cut with a normal oxy-fuel gas
process. - ANSWERFalse
What are the two basic methods of plasma torch operation? -
ANSWERTransferred and Non-Transferred arc
Advanced Education
What is the term used to describe the following condition of lost corrosion
resistance?
"When certain stainless steels are heated between 500-850° C, carbides form
at the grain boundaries and cause a local depletion of chromium."
(A) Oxidization
(B) Increased toughness
(C) Solution heat treatment
(D) Sensitization - ANSWER(D) Sensitization
Note: Also known as "carbide precipitation" -- Chromium binds to carbides,
and "sweats out" at the grain boundaries
On a radiograph, undercut appears as a _________ line.
(A) light
,(B) dark - ANSWER(B) dark
What is the Canadian Standard for safety in welding? - ANSWERCSA W117.2
What is the typical three-phase input voltage in most Canadian welding
shops? - ANSWER600V
True or False: The cable from the workpiece back to the welding machine is
called the "ground lead". - ANSWERFalse. The correct term is the "work lead".
What is the type of radiation that can damage living cells? - ANSWERIonizing
Name two examples of ionizing radiation. - ANSWERX-rays and Gamma rays
What is the minimum suggested shade for a welding helmet when using 5/32
SMAW electrode at 150 A? - ANSWERShade 10
Approx. how far could spatter travel when welding/cutting from 2.5m high? -
ANSWERPossibly up to 6m
What is the toxic component contained in some copper alloys? -
ANSWERBeryllium
Which welding process will likely have the highest fume generation rate?
[SMAW / SAW / FCAW] - ANSWERFCAW
,What do the terms TLV and TWA stand for? - ANSWERTLV: Threshold limit
value
TWA: Time weighted average
The action of UV light on oxygen produces which toxic gas? - ANSWEROzone
Which common fuel gas has the widest range where it can become
flammable when mixed with air? - ANSWERAcetylene
What substance should you NEVER apply to a stiff pressure-adjusting screw
on an oxygen regulator? - ANSWEROil or grease
What is the maximum gauge pressure that acetylene should be used?
(kPa/psi) - ANSWER103 kPa (15 psi)
Which toxic gas is produced when welding on surfaces with chlorinated
hydrocarbon solvents? - ANSWERPhosgene gas
What is the typical max. OCV of an AC welding machine? - ANSWER80 V
In an isometric drawing, the lines (for width, length and depth) are inclined at
an angle of how many degrees? - ANSWER30°
What are the maximum number of views in an orthographic drawing? -
ANSWER6
, What are the two general classes of picture drawings? - ANSWERPerspective
and Isometric
What are the 5 basic joints? - ANSWER1) Butt
2) Corner
3) T
4) Lap
5) Edge
What are the 5 basic weld types? - ANSWER1) Groove
2) Fillet
3) Plug/Slot
4) Surfacing
5) Edge
Plasma cutting torch temp can reach temperatures of __________ ° Celsius. -
ANSWER30,000
True or False: All plasma arc cutting equipment is operated using DCEN. -
ANSWERTrue
True or False: Stainless steel can be readily cut with a normal oxy-fuel gas
process. - ANSWERFalse
What are the two basic methods of plasma torch operation? -
ANSWERTransferred and Non-Transferred arc
