CWB LEVEL 2 STUDY QUESTIONS
REV 1 2026 ACTUAL EXAM SCRIPT
COMPLETE QUESTIONS AND
VERIFIED ANSWERS GRADE A+
◉ 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 typical 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 correct term is
the "work lead".
◉ What is the type of radiation that can damage living cells?. Answer:
Ionizing
◉ Name two examples of ionizing radiation.. 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?. Answer: Shade 10
◉ Approx. how far could spatter travel when welding/cutting from 2.5m
high?. Answer: Possibly up to 6m
◉ What is the toxic component contained in some copper alloys?.
Answer: Beryllium
◉ Which welding process will likely have the highest fume generation
rate?
[SMAW / SAW / FCAW]. Answer: FCAW
◉ What do the terms TLV and TWA stand for?. Answer: TLV:
Threshold limit value
TWA: Time weighted average
◉ The action of UV light on oxygen produces which toxic gas?.
Answer: Ozone
◉ Which common fuel gas has the widest range where it can become
flammable when mixed with air?. Answer: Acetylene
,◉ What substance should you NEVER apply to a stiff pressure-
adjusting screw on an oxygen regulator?. Answer: Oil or grease
◉ What is the maximum gauge pressure that acetylene should be used?
(kPa/psi). Answer: 103 kPa (15 psi)
◉ Which toxic gas is produced when welding on surfaces with
chlorinated hydrocarbon solvents?. Answer: Phosgene gas
◉ What is the typical max. OCV of an AC welding machine?. Answer:
80 V
◉ In an isometric drawing, the lines (for width, length and depth) are
inclined at an angle of how many degrees?. Answer: 30°
◉ What are the maximum number of views in an orthographic
drawing?. Answer: 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 readily cut with a normal 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
REV 1 2026 ACTUAL EXAM SCRIPT
COMPLETE QUESTIONS AND
VERIFIED ANSWERS GRADE A+
◉ 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 typical 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 correct term is
the "work lead".
◉ What is the type of radiation that can damage living cells?. Answer:
Ionizing
◉ Name two examples of ionizing radiation.. 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?. Answer: Shade 10
◉ Approx. how far could spatter travel when welding/cutting from 2.5m
high?. Answer: Possibly up to 6m
◉ What is the toxic component contained in some copper alloys?.
Answer: Beryllium
◉ Which welding process will likely have the highest fume generation
rate?
[SMAW / SAW / FCAW]. Answer: FCAW
◉ What do the terms TLV and TWA stand for?. Answer: TLV:
Threshold limit value
TWA: Time weighted average
◉ The action of UV light on oxygen produces which toxic gas?.
Answer: Ozone
◉ Which common fuel gas has the widest range where it can become
flammable when mixed with air?. Answer: Acetylene
,◉ What substance should you NEVER apply to a stiff pressure-
adjusting screw on an oxygen regulator?. Answer: Oil or grease
◉ What is the maximum gauge pressure that acetylene should be used?
(kPa/psi). Answer: 103 kPa (15 psi)
◉ Which toxic gas is produced when welding on surfaces with
chlorinated hydrocarbon solvents?. Answer: Phosgene gas
◉ What is the typical max. OCV of an AC welding machine?. Answer:
80 V
◉ In an isometric drawing, the lines (for width, length and depth) are
inclined at an angle of how many degrees?. Answer: 30°
◉ What are the maximum number of views in an orthographic
drawing?. Answer: 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 readily cut with a normal 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
