CWB LEVEL II 9 (KEY REVIEW POINTS FROM MODULES 1 THROUGH 22) NEWEST ACTUAL EXAM
COMPLETE 200+ QUESTIONS AND CORRECT DETAILED ANSWERS & RATIONALES
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 - Correct 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 - Correct Answer (B) dark
What is the Canadian Standard for safety in welding? - Correct Answer CSA W117.2
What is the typical three-phase input voltage in most Canadian welding shops? - Correct
Answer 600V
True or False: The cable from the workpiece back to the welding machine is called the "ground
lead". - Correct Answer False. The correct term is the "work lead".
What is the type of radiation that can damage living cells? - Correct Answer Ionizing
Name two examples of ionizing radiation. - Correct Answer X-rays and Gamma rays
What is the minimum suggested shade for a welding helmet when using 5/32 SMAW electrode
at 150 A? - Correct Answer Shade 10
Approx. how far could spatter travel when welding/cutting from 2.5m high? - Correct Answer
Possibly up to 6m
What is the toxic component contained in some copper alloys? - Correct Answer Beryllium
Which welding process will likely have the highest fume generation rate?
,CWB LEVEL II 9 (KEY REVIEW POINTS FROM MODULES 1 THROUGH 22) NEWEST ACTUAL EXAM
COMPLETE 200+ QUESTIONS AND CORRECT DETAILED ANSWERS & RATIONALES
[SMAW / SAW / FCAW] - Correct Answer FCAW
What do the terms TLV and TWA stand for? - Correct Answer TLV: Threshold limit value
TWA: Time weighted average
Is helium lighter or heavier than air? - Correct Answer Lighter
The action of UV light on oxygen produces which toxic gas? - Correct Answer Ozone
Which common fuel gas has the widest range where it can become flammable when mixed with
air? - Correct Answer Acetylene
What substance should you NEVER apply to a stiff pressure-adjusting screw on an oxygen
regulator? - Correct Answer Oil or grease
What is the maximum gauge pressure that acetylene should be used? (kPa/psi) - Correct
Answer 103 kPa (15 psi)
Which toxic gas is produced when welding on surfaces with chlorinated hydrocarbon solvents? -
Correct Answer Phosgene gas
What is the typical max. OCV of an AC welding machine? - Correct Answer 80 V
In an isometric drawing, the lines (for width, length and depth) are inclined at an angle of how
many degrees? - Correct Answer 30°
What are the maximum number of views in an orthographic drawing? - Correct Answer 6
What are the two general classes of picture drawings? - Correct Answer Perspective and
Isometric
What are the 5 basic joints? - Correct Answer 1) Butt
2) Corner
3) T
4) Lap
5) Edge
What are the 5 basic weld types? - Correct Answer 1) Groove
2) Fillet
3) Plug/Slot
4) Surfacing
, CWB LEVEL II 9 (KEY REVIEW POINTS FROM MODULES 1 THROUGH 22) NEWEST ACTUAL EXAM
COMPLETE 200+ QUESTIONS AND CORRECT DETAILED ANSWERS & RATIONALES
5) Edge
Plasma cutting torch temp can reach temperatures of __________ ° Celsius. - Correct Answer
30,000
True or False: All plasma arc cutting equipment is operated using DCEN. - Correct Answer True
True or False: Stainless steel can be readily cut with a normal oxy-fuel gas process. - Correct
Answer False
What are the two basic methods of plasma torch operation? - Correct Answer Transferred and
Non-Transferred arc
In North America, the 3 othographic views most commonly-used are: TOP, FRONT and
__________ Side.
[RIGHT / LEFT] - Correct Answer LEFT
What is the difference between a "weld symbol" and a "welding symbol"? - Correct 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? - Correct Answer LEFT
In a welding symbol, is the length of the weld located to the LEFT or RIGHT of the fillet weld
symbol? - Correct Answer RIGHT
In what direction do the electrons flow in an electrical arc?
(A) anode --> cathode
(B) cathode --> anode - Correct Answer (B) cathode --> anode
In arc welding, the arc temperature can exceed temperatures of __________ ° Celsius? -
Correct Answer 30,000
Which welding process has the highest arc efficiency? - Correct Answer SAW
Arc voltage __________ when arc length is increased.
[Increased / Decreased] - Correct Answer Increases
COMPLETE 200+ QUESTIONS AND CORRECT DETAILED ANSWERS & RATIONALES
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 - Correct 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 - Correct Answer (B) dark
What is the Canadian Standard for safety in welding? - Correct Answer CSA W117.2
What is the typical three-phase input voltage in most Canadian welding shops? - Correct
Answer 600V
True or False: The cable from the workpiece back to the welding machine is called the "ground
lead". - Correct Answer False. The correct term is the "work lead".
What is the type of radiation that can damage living cells? - Correct Answer Ionizing
Name two examples of ionizing radiation. - Correct Answer X-rays and Gamma rays
What is the minimum suggested shade for a welding helmet when using 5/32 SMAW electrode
at 150 A? - Correct Answer Shade 10
Approx. how far could spatter travel when welding/cutting from 2.5m high? - Correct Answer
Possibly up to 6m
What is the toxic component contained in some copper alloys? - Correct Answer Beryllium
Which welding process will likely have the highest fume generation rate?
,CWB LEVEL II 9 (KEY REVIEW POINTS FROM MODULES 1 THROUGH 22) NEWEST ACTUAL EXAM
COMPLETE 200+ QUESTIONS AND CORRECT DETAILED ANSWERS & RATIONALES
[SMAW / SAW / FCAW] - Correct Answer FCAW
What do the terms TLV and TWA stand for? - Correct Answer TLV: Threshold limit value
TWA: Time weighted average
Is helium lighter or heavier than air? - Correct Answer Lighter
The action of UV light on oxygen produces which toxic gas? - Correct Answer Ozone
Which common fuel gas has the widest range where it can become flammable when mixed with
air? - Correct Answer Acetylene
What substance should you NEVER apply to a stiff pressure-adjusting screw on an oxygen
regulator? - Correct Answer Oil or grease
What is the maximum gauge pressure that acetylene should be used? (kPa/psi) - Correct
Answer 103 kPa (15 psi)
Which toxic gas is produced when welding on surfaces with chlorinated hydrocarbon solvents? -
Correct Answer Phosgene gas
What is the typical max. OCV of an AC welding machine? - Correct Answer 80 V
In an isometric drawing, the lines (for width, length and depth) are inclined at an angle of how
many degrees? - Correct Answer 30°
What are the maximum number of views in an orthographic drawing? - Correct Answer 6
What are the two general classes of picture drawings? - Correct Answer Perspective and
Isometric
What are the 5 basic joints? - Correct Answer 1) Butt
2) Corner
3) T
4) Lap
5) Edge
What are the 5 basic weld types? - Correct Answer 1) Groove
2) Fillet
3) Plug/Slot
4) Surfacing
, CWB LEVEL II 9 (KEY REVIEW POINTS FROM MODULES 1 THROUGH 22) NEWEST ACTUAL EXAM
COMPLETE 200+ QUESTIONS AND CORRECT DETAILED ANSWERS & RATIONALES
5) Edge
Plasma cutting torch temp can reach temperatures of __________ ° Celsius. - Correct Answer
30,000
True or False: All plasma arc cutting equipment is operated using DCEN. - Correct Answer True
True or False: Stainless steel can be readily cut with a normal oxy-fuel gas process. - Correct
Answer False
What are the two basic methods of plasma torch operation? - Correct Answer Transferred and
Non-Transferred arc
In North America, the 3 othographic views most commonly-used are: TOP, FRONT and
__________ Side.
[RIGHT / LEFT] - Correct Answer LEFT
What is the difference between a "weld symbol" and a "welding symbol"? - Correct 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? - Correct Answer LEFT
In a welding symbol, is the length of the weld located to the LEFT or RIGHT of the fillet weld
symbol? - Correct Answer RIGHT
In what direction do the electrons flow in an electrical arc?
(A) anode --> cathode
(B) cathode --> anode - Correct Answer (B) cathode --> anode
In arc welding, the arc temperature can exceed temperatures of __________ ° Celsius? -
Correct Answer 30,000
Which welding process has the highest arc efficiency? - Correct Answer SAW
Arc voltage __________ when arc length is increased.
[Increased / Decreased] - Correct Answer Increases
