CWB Welding Inspector Level 2 Exam (Latest 2024 /
2025 Update) Questions and Verified Answers | All
Chapters Covered | 100% Correct | Grade A+
__________________________________________________________
Which common fuel gas has the widest range where it can become flammable when mixed with
air?
✓ Acetylene
What substance should you NEVER apply to a stiff pressure-adjusting screw on an oxygen
regulator?
✓ Oil or grease
What is the maximum gauge pressure that acetylene should be used? (kPa/psi)
✓ 103 kPa (15 psi)
Which toxic gas is produced when welding on surfaces with chlorinated hydrocarbon solvents?
✓ Phosgene gas
What is the typical max. OCV of an AC welding machine?
✓ 80 V
In an isometric drawing, the lines (for width, length and depth) are inclined at an angle of how
many degrees?
✓ 30°
What are the maximum number of views in an orthographic drawing?
✓ 6
What are the two general classes of picture drawings?
✓ Perspective and Isometric
What are the 5 basic joints?
, ✓ Butt
2) Corner
3) T
4) Lap
5) Edge
What are the 5 basic weld types?
✓ Groove
2) Fillet
3) Plug/Slot
4) Surfacing
5) Edge
Plasma cutting torch temp can reach temperatures of __________ ° Celsius.
✓ 30,000
True or False: All plasma arc cutting equipment is operated using DCEN.
✓ True
True or False: Stainless steel can be readily cut with a normal oxy-fuel gas process.
✓ False
What are the two basic methods of plasma torch operation?
✓ Transferred and Non-Transferred arc
In North America, the 3 othographic views most commonly-used are: TOP, FRONT and __________
Side.
[RIGHT / LEFT]
✓ LEFT
What is the difference between a "weld symbol" and a "welding symbol"?
✓ 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?
, ✓ LEFT
In a welding symbol, is the length of the weld located to the LEFT or RIGHT of the fillet weld
symbol?
✓ RIGHT
In what direction do the electrons flow in an electrical arc?
(A) anode --> cathode
(B) cathode --> anode
✓ (B) cathode --> anode
In arc welding, the arc temperature can exceed temperatures of __________ ° Celsius?
✓ 30,000
Which welding process has the highest arc efficiency?
✓ SAW
Arc voltage __________ when arc length is increased.
[Increased / Decreased]
✓ Increases
In GTAW, what type of penetration and weld width can be expected when using DCEP?
✓ Shallow penetration, and wide weld
Which polarity is most often chosen for direct current GTAW welding of steels and why?
✓ DCEN. More heat concentrated at the workpiece --> deeper penetration
Does SMAW use CC or CV?
✓ CC
For out-of-position welding, would you select a small or large diameter electrode?
✓ A small diameter electrode
Does GMAW use CC or CV?
✓ CV
, What happens to the SAW weld when you switch from DCEP to DCEN?
✓ Increased deposition rate, but less penetration
What is the temperature for storing low-hydrogen electrodes?
✓ 120° Celsius
When using a consumable electrode in DCEN, the majority of the heat is concentrated on the
__________.
(A) Electrode
(B) Workpiece
✓ Electrode
When using a non-consumable electrode in DCEN, the majority of the heat is concentrated on the
__________.
(A) Electrode
(B) Workpiece
✓ (B) Workpiece
Which has a "drooping" curve characteristic - CC or CV?
✓ CC
AC transformer welding power sources use a:
(A) step-up transformer
(B) step-down transformer
✓ (B) Step-down transformer
What is a diode used for in a welding machine?
(A) To produce AC current
(B) To produce DC current
✓ (B) To produce DC current
2025 Update) Questions and Verified Answers | All
Chapters Covered | 100% Correct | Grade A+
__________________________________________________________
Which common fuel gas has the widest range where it can become flammable when mixed with
air?
✓ Acetylene
What substance should you NEVER apply to a stiff pressure-adjusting screw on an oxygen
regulator?
✓ Oil or grease
What is the maximum gauge pressure that acetylene should be used? (kPa/psi)
✓ 103 kPa (15 psi)
Which toxic gas is produced when welding on surfaces with chlorinated hydrocarbon solvents?
✓ Phosgene gas
What is the typical max. OCV of an AC welding machine?
✓ 80 V
In an isometric drawing, the lines (for width, length and depth) are inclined at an angle of how
many degrees?
✓ 30°
What are the maximum number of views in an orthographic drawing?
✓ 6
What are the two general classes of picture drawings?
✓ Perspective and Isometric
What are the 5 basic joints?
, ✓ Butt
2) Corner
3) T
4) Lap
5) Edge
What are the 5 basic weld types?
✓ Groove
2) Fillet
3) Plug/Slot
4) Surfacing
5) Edge
Plasma cutting torch temp can reach temperatures of __________ ° Celsius.
✓ 30,000
True or False: All plasma arc cutting equipment is operated using DCEN.
✓ True
True or False: Stainless steel can be readily cut with a normal oxy-fuel gas process.
✓ False
What are the two basic methods of plasma torch operation?
✓ Transferred and Non-Transferred arc
In North America, the 3 othographic views most commonly-used are: TOP, FRONT and __________
Side.
[RIGHT / LEFT]
✓ LEFT
What is the difference between a "weld symbol" and a "welding symbol"?
✓ 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?
, ✓ LEFT
In a welding symbol, is the length of the weld located to the LEFT or RIGHT of the fillet weld
symbol?
✓ RIGHT
In what direction do the electrons flow in an electrical arc?
(A) anode --> cathode
(B) cathode --> anode
✓ (B) cathode --> anode
In arc welding, the arc temperature can exceed temperatures of __________ ° Celsius?
✓ 30,000
Which welding process has the highest arc efficiency?
✓ SAW
Arc voltage __________ when arc length is increased.
[Increased / Decreased]
✓ Increases
In GTAW, what type of penetration and weld width can be expected when using DCEP?
✓ Shallow penetration, and wide weld
Which polarity is most often chosen for direct current GTAW welding of steels and why?
✓ DCEN. More heat concentrated at the workpiece --> deeper penetration
Does SMAW use CC or CV?
✓ CC
For out-of-position welding, would you select a small or large diameter electrode?
✓ A small diameter electrode
Does GMAW use CC or CV?
✓ CV
, What happens to the SAW weld when you switch from DCEP to DCEN?
✓ Increased deposition rate, but less penetration
What is the temperature for storing low-hydrogen electrodes?
✓ 120° Celsius
When using a consumable electrode in DCEN, the majority of the heat is concentrated on the
__________.
(A) Electrode
(B) Workpiece
✓ Electrode
When using a non-consumable electrode in DCEN, the majority of the heat is concentrated on the
__________.
(A) Electrode
(B) Workpiece
✓ (B) Workpiece
Which has a "drooping" curve characteristic - CC or CV?
✓ CC
AC transformer welding power sources use a:
(A) step-up transformer
(B) step-down transformer
✓ (B) Step-down transformer
What is a diode used for in a welding machine?
(A) To produce AC current
(B) To produce DC current
✓ (B) To produce DC current
