CWB WELDING INSPECTOR EXAMS SCRIPT QUESTIONS
AND ANSWERS 2025/2026
✔✔230-260 2 hours - ✔✔low hydrogen electrodes exposed to ambient temperatures
and humidity should be rebaked at ____ degrees Celsius for _ _____
✔✔calcium carbonate - ✔✔____ ____ is an important ingredient in low hydrogen flux
because it produces a fast freezing slag
✔✔largest - ✔✔when welding with SMAW the _____ practicable electrode should be
selected
✔✔repair - ✔✔SMAW is typically used for ____ and maintence, among other things
✔✔constant voltage - ✔✔GMAW uses what kind of power source
✔✔DCEP - ✔✔GMAW almost exclusively uses the ____ polarity
✔✔v shaped - ✔✔When welding with solid steel or stainless steel wires in GMAW you
should use ___ ___ drive rolls
✔✔knurled - ✔✔When welding with metal cored or flux cored wires in GMAW you
should use ___ drive rolls
✔✔u shaped - ✔✔When welding with aluminum wires in GMAW you should use ___
___ drive rolls
✔✔Ionization potential - ✔✔the amount of voltage required to produce a plasma column
in a gas is called the
✔✔more voltage - ✔✔gases with a higher ionization potential require ___ ___ to initiate
an arc
✔✔0.6 to 1.6mm - ✔✔GMAW electrodes are usually ___ __ ___ in diameter
✔✔incomplete fusion, undercut, porosity - ✔✔common discontinuities for GMAW are
✔✔GMAW - ✔✔higher duty cycle, higher depostion rate, no slag or flux and less need
for stop and starts is an advantage of what process
✔✔-40 - ✔✔shielding gases generally have a dew point of ____ degrees celsius
✔✔FCAW - ✔✔porosity, worm tracks, lack of fusion/penetration and hydrogen induced
cracking are common discontinuities of what process
, ✔✔CSA W48 - ✔✔what canadian standard gives the requirements for FCAW
electrodes
✔✔DCEP - ✔✔most applications of singe wire SAW use what polarity
✔✔reduced penetration, risk of incomplete fusion - ✔✔DCEN can be used in single wire
SAW to achieve higher deposition rate but results in :
✔✔increase - ✔✔in SAW a change from DCEP to DCEN requires a voltage ____ of 2-
3volts to achieve the same bead profile
✔✔voltage sensing - ✔✔consrant current power sources require a ___ ____ wire feeder
to maintain arc length
✔✔AC - ✔✔In SAW ____ Current is typically used for high currents, multiple electrode
systems and in narrow gap welding where arc blow may be a problem
✔✔current - ✔✔as electrode extension increases, ____ decreases
✔✔undercut and slag inclusions - ✔✔common flaws in SAW are:
✔✔iron ore - ✔✔hematite, limonite, magnatite and taconite are examples of:
✔✔3 to 4 percent - ✔✔pig iron contains about how much carbon?
✔✔teeming - ✔✔filling ingot moulds with the metal from a refining furnace is referred to
as:
✔✔hypoeutectoid steel - ✔✔steel with a carbon contentless than 0.8% is called:
✔✔hypereutectoid steel - ✔✔steel with a carbon content more than 0.8% is called:
✔✔normalizing - ✔✔_____ is a process of refinig the grain size of a steel to improve its
properties
✔✔912c - ✔✔transitional temperature of steel from FCC to BCC
✔✔lamination - ✔✔a discontinuity found in the base metal that lies parallel to the
surface
✔✔procedure qualification RECORD - ✔✔PQR stands for
AND ANSWERS 2025/2026
✔✔230-260 2 hours - ✔✔low hydrogen electrodes exposed to ambient temperatures
and humidity should be rebaked at ____ degrees Celsius for _ _____
✔✔calcium carbonate - ✔✔____ ____ is an important ingredient in low hydrogen flux
because it produces a fast freezing slag
✔✔largest - ✔✔when welding with SMAW the _____ practicable electrode should be
selected
✔✔repair - ✔✔SMAW is typically used for ____ and maintence, among other things
✔✔constant voltage - ✔✔GMAW uses what kind of power source
✔✔DCEP - ✔✔GMAW almost exclusively uses the ____ polarity
✔✔v shaped - ✔✔When welding with solid steel or stainless steel wires in GMAW you
should use ___ ___ drive rolls
✔✔knurled - ✔✔When welding with metal cored or flux cored wires in GMAW you
should use ___ drive rolls
✔✔u shaped - ✔✔When welding with aluminum wires in GMAW you should use ___
___ drive rolls
✔✔Ionization potential - ✔✔the amount of voltage required to produce a plasma column
in a gas is called the
✔✔more voltage - ✔✔gases with a higher ionization potential require ___ ___ to initiate
an arc
✔✔0.6 to 1.6mm - ✔✔GMAW electrodes are usually ___ __ ___ in diameter
✔✔incomplete fusion, undercut, porosity - ✔✔common discontinuities for GMAW are
✔✔GMAW - ✔✔higher duty cycle, higher depostion rate, no slag or flux and less need
for stop and starts is an advantage of what process
✔✔-40 - ✔✔shielding gases generally have a dew point of ____ degrees celsius
✔✔FCAW - ✔✔porosity, worm tracks, lack of fusion/penetration and hydrogen induced
cracking are common discontinuities of what process
, ✔✔CSA W48 - ✔✔what canadian standard gives the requirements for FCAW
electrodes
✔✔DCEP - ✔✔most applications of singe wire SAW use what polarity
✔✔reduced penetration, risk of incomplete fusion - ✔✔DCEN can be used in single wire
SAW to achieve higher deposition rate but results in :
✔✔increase - ✔✔in SAW a change from DCEP to DCEN requires a voltage ____ of 2-
3volts to achieve the same bead profile
✔✔voltage sensing - ✔✔consrant current power sources require a ___ ____ wire feeder
to maintain arc length
✔✔AC - ✔✔In SAW ____ Current is typically used for high currents, multiple electrode
systems and in narrow gap welding where arc blow may be a problem
✔✔current - ✔✔as electrode extension increases, ____ decreases
✔✔undercut and slag inclusions - ✔✔common flaws in SAW are:
✔✔iron ore - ✔✔hematite, limonite, magnatite and taconite are examples of:
✔✔3 to 4 percent - ✔✔pig iron contains about how much carbon?
✔✔teeming - ✔✔filling ingot moulds with the metal from a refining furnace is referred to
as:
✔✔hypoeutectoid steel - ✔✔steel with a carbon contentless than 0.8% is called:
✔✔hypereutectoid steel - ✔✔steel with a carbon content more than 0.8% is called:
✔✔normalizing - ✔✔_____ is a process of refinig the grain size of a steel to improve its
properties
✔✔912c - ✔✔transitional temperature of steel from FCC to BCC
✔✔lamination - ✔✔a discontinuity found in the base metal that lies parallel to the
surface
✔✔procedure qualification RECORD - ✔✔PQR stands for
