HOSMERIT
CWB LEVEL II EXAM QUESTIONS AND VERIFIED
ANSWERS 2024-2025
What is the term for 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? - Answer CSA W117.2
What is the common three-phase input voltage in most Canadian welding shops? - Answer 600V
,True or False: The cable from the workpiece back to the welding machine is called the "ground
lead". - Answer False. The proper term is the "work lead".
What type of radiation can damage living cells? - Answer Ionizing
Name two examples of ionizing radiation. - Answer X-rays and Gamma rays
What minimum shade is suggested for a welding helmet for 5/32 SMAW electrode at 150 A? -
Answer Shade 10
Approx. how far could spatter travel when welding/cutting from 2.5m high? - Answer Possibly
up to 6m
What toxic element can be present in some copper alloys? - Answer Beryllium
Which of the following joining processes would be expected to have the highest fume
generation rate?
[SMAW / SAW / FCAW] - Answer FCAW
What do the following abbreviations stand for? - Answer TLV: Threshold limit value TWA:
Time weighted average
Is helium lighter or heavier than air? - Answer Lighter
The action of UV light on oxygen produces which toxic gas? - Answer Ozone
,Which of the following common fuel gases has the widest range where it may become
flammable when mixed with air? - Answer Acetylene
If a pressure-adjusting screw on an oxygen regulator becomes stiff, what must you NEVER use
on it? - Answer Oil or grease
Over what maximum gauge pressure should acetylene ever be used? - Answer 103 kPa
(15 psi)
Which toxic gas is produced in welding on surfaces cleaned with chlorinated hydrocarbon
solvents? - Ans Phosgene gas
What is the usual max. OCV for an AC welding machine? - Ans 80 V
In an isometric drawing the sets of lines, (for width, length and depth) are at an angle of how
many degrees? - Ans 30°
What is the maximum number of view in an orthographic drawing? - Ans 6
What are the two general classes of picture drawings? - Answer Perspective and Isometric
What are the 5 basic joints? - Answer 1) Butt
2. Corner
3. T
4. Lap
, 5. Edge
What are the 5 basic weld types? - Answer 1) Groove
2. Fillet
3. Plug/Slot
4. Surfacing
5. Edge
Plasma cutting torch temp can reach temperatures of ° Celsius. - Answer 30,000
True or False: All plasma arc cutting equipment is operated using DCEN. - Answer True
True or False: Stainless steel can be easily cut with a standard oxy-fuel gas process. - Answer
False
What are the two basic methods of plasma torch operation? - Answer Transferred and Non-
Transferred arc
In North America, the 3 othographic views most commonly-used are: TOP, FRONT and
Side. [RIGHT / LEFT] - Answer LEFT
What is the difference between a "weld symbol" and a "welding symbol"? Answer A "weld
symbol" indicates the specific kind of weld to be used (ex. fillet), and is contained inside of
"welding symbol".
In a welding symbol, is the size of the weld located to the LEFT or RIGHT of the fillet weld
symbol? Answer LEFT
CWB LEVEL II EXAM QUESTIONS AND VERIFIED
ANSWERS 2024-2025
What is the term for 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? - Answer CSA W117.2
What is the common three-phase input voltage in most Canadian welding shops? - Answer 600V
,True or False: The cable from the workpiece back to the welding machine is called the "ground
lead". - Answer False. The proper term is the "work lead".
What type of radiation can damage living cells? - Answer Ionizing
Name two examples of ionizing radiation. - Answer X-rays and Gamma rays
What minimum shade is suggested for a welding helmet for 5/32 SMAW electrode at 150 A? -
Answer Shade 10
Approx. how far could spatter travel when welding/cutting from 2.5m high? - Answer Possibly
up to 6m
What toxic element can be present in some copper alloys? - Answer Beryllium
Which of the following joining processes would be expected to have the highest fume
generation rate?
[SMAW / SAW / FCAW] - Answer FCAW
What do the following abbreviations stand for? - Answer TLV: Threshold limit value TWA:
Time weighted average
Is helium lighter or heavier than air? - Answer Lighter
The action of UV light on oxygen produces which toxic gas? - Answer Ozone
,Which of the following common fuel gases has the widest range where it may become
flammable when mixed with air? - Answer Acetylene
If a pressure-adjusting screw on an oxygen regulator becomes stiff, what must you NEVER use
on it? - Answer Oil or grease
Over what maximum gauge pressure should acetylene ever be used? - Answer 103 kPa
(15 psi)
Which toxic gas is produced in welding on surfaces cleaned with chlorinated hydrocarbon
solvents? - Ans Phosgene gas
What is the usual max. OCV for an AC welding machine? - Ans 80 V
In an isometric drawing the sets of lines, (for width, length and depth) are at an angle of how
many degrees? - Ans 30°
What is the maximum number of view in an orthographic drawing? - Ans 6
What are the two general classes of picture drawings? - Answer Perspective and Isometric
What are the 5 basic joints? - Answer 1) Butt
2. Corner
3. T
4. Lap
, 5. Edge
What are the 5 basic weld types? - Answer 1) Groove
2. Fillet
3. Plug/Slot
4. Surfacing
5. Edge
Plasma cutting torch temp can reach temperatures of ° Celsius. - Answer 30,000
True or False: All plasma arc cutting equipment is operated using DCEN. - Answer True
True or False: Stainless steel can be easily cut with a standard oxy-fuel gas process. - Answer
False
What are the two basic methods of plasma torch operation? - Answer Transferred and Non-
Transferred arc
In North America, the 3 othographic views most commonly-used are: TOP, FRONT and
Side. [RIGHT / LEFT] - Answer LEFT
What is the difference between a "weld symbol" and a "welding symbol"? Answer A "weld
symbol" indicates the specific kind of weld to be used (ex. fillet), and is contained inside of
"welding symbol".
In a welding symbol, is the size of the weld located to the LEFT or RIGHT of the fillet weld
symbol? Answer LEFT
