CWB LEVEL 2 LATEST 2026 TEST PAPER QUESTIONS AND
ANSWERS GRADED A+
✔✔State three advantages of the GMAW process over the SMAW process. - ✔✔-High
deposition rate,
-greater percentage of arc time due to infrequent electrode changing,
-more economical use of filler metal in the absence of stub losses, .
✔✔Which welding parameter is used most reliably to ensure that a welding procedure
developed with one machine is accurately duplicated on another machine? - ✔✔More
feed speed.
✔✔Welding equipment for gas shielded flux cored arc welding is essentially the same
as for gas metal arc welding. - ✔✔True.
✔✔The most common gas used with gas shielded flux cored arc welding is: - ✔✔75%
Argon/25% C02
✔✔The percentage of the electrode weight derived from the coating in lightly coated
electrodes is:
A)10-20%
b)20-35%
c)25-40%
d)up to 55% - ✔✔A)10-20%
✔✔When classifying Stainless Steel SMAW electrodes the last number in the
designation (E316-16) refers to the:
a) Position of welding
b) Alloy type
c) Flux type (basic ,acid or rutile)
d) Core wire composition - ✔✔c) Flux type (basic ,acid or rutile)
✔✔E49XT-1 Electrodes are designed for:
a)Vertical up welding only
b) All positions except V-down
c) Welding with C02 shielding gas only
d) Welding in the overhead position with electrodes 3.2 mm (1/8")or larger - ✔✔c)
Welding with C02 shielding gas onl
✔✔Rutile type flux cored electrodes operate on:
a) DCEN and give a globular type arc
b) DCEP and give a globular type arc
c) DCEN and give a spray type arc
d) DCEP and give a spray type arc - ✔✔d) DCEP and give a spray type arc
,✔✔Which of the following gases is required to achieve spray transfer when welding
carbon
steels?
a) Argon
b) Carbon-dioxide
c) Helium
d) Nitrogen - ✔✔a) Argon
✔✔For the ER49S-G classification, the chemistry requirements of the electrode:
a) are specified by the welding supervisor
b) are specified in the electrode standard
c) are specified by the electrode manufacturer
d) are not required to meet specific chemistry requirements - ✔✔d) are not required to
meet specific chemistry requirements
✔✔Which of the following is an important function of the electrode coating?
a) protect the molten metal
b) add hydrogen to weld metal
c) prevent slag removal
d) maintain electrode temperature
e) decrease deposition rate - ✔✔a) protect the molten metal
✔✔Calcium carbonate is an important ingredient in which type of electrodes?
a) cellulose electrodes
b) rutile electrodes
c) basic electrodes
d) oxide electrodes - ✔✔c) basic electrodes
✔✔Tungsten electrodes of a given type and size should be operated near their:
a) Maximum current carrying capability
b) Minimum current carrying capacity
c) Midpoint current carrying capacity
d) Widest range of current carrying capacity - ✔✔a) Maximum current carrying
capability
✔✔Shielded metal arc welding of aluminum should be used for:
a) Critical applications
b) Non-critical applications
c) Thick aluminum applications
d) Thin aluminum applications - ✔✔b) Non-critical applications
✔✔In general, which GMAW mode of transfer is NOT suited for the welding of thin
sheet steel?
,a) spray transfer
b) dip transfer
c) short-circuiting transfer
d) pulsed-spray transfer - ✔✔d) pulsed-spray transfer
✔✔Toughness can be best defined as:
a) a loss of ductility in the through thickness direction
b) the ability of a material to permanently deform without failure
c) the ability of a material to resist the growth of a crack
d) resistance of a metal to plastic deformation usually by indentation - ✔✔c) the ability
of a material to resist the growth of a crack
✔✔CSA W59 recommends that basic electrodes should be stored in a holding oven at a
minimum temperature of:
a) 80C
b) 50C
c) 120C
d) 230C
e) 430C - ✔✔c) 120C
✔✔E49XT-3 wires are classified with:
a) No external shielding gas
b )High helium gases
c) High Ar based gases
d)100% of co2 - ✔✔a) No external shielding gas
✔✔Submerged arc welding fluxes perform functions similar to those used on shielded
metal arc welding electrodes however they are designed to handle:
a) Lower amperage ranges
b) Currents over 2000 amps
c) Higher extrusion pressures
d) Only direct current electrodes - ✔✔b) Currents over 2000 amps
✔✔When defining the position of capability for FCAW stainless steel electrodes a "O"
indicates the electrode can be used for:
a) All position welding
b) Vertical down fillets and grooves only
c) Flat grooves and horizontal fillets only
d) Overhead fillets and grooves only - ✔✔c) Flat grooves and horizontal fillets only
✔✔Basic type flux cored electrodes operate on:
a) DCEP only and give a smooth spray type arc
b) DCEP and DCEN and are characterized by globular transfer
c) DCEN only and are characterized by globular transfer
, d) DCEP only and give a rough spray type arc - ✔✔b) DCEP and DCEN and are
characterized by globular transfer
✔✔Which of the following is considered to be a Low Alloy Steel Electrode?
a) E4927
b) E4922
c) E4918
d) E4918-A1
e) E7018-R - ✔✔d) E4918-A1
✔✔The toughness of submerged arc welding weldments is affected when ____ is
present in the weld
a) Nitrogen
b) Oxygen
c) Aluminum
d) co2 - ✔✔b) Oxygen
✔✔Welds made with self-shielded electrodes can suffer from excessive nitrogen
absorption. Excessive nitrogen in the weld pool will result in:
a) Gross porosity during solidification
b) Oxides that are removed by the fluxing action
c) No noticeable weld deposit defects
d) Cracking in the centre of the weld deposit - ✔✔a) Gross porosity during solidification
✔✔When welding aluminum with the gas tungsten arc process using a pure tungsten
electrode a ball is formed on the end. This is accomplished by:
a) Striking an arc on a steel block using DCEP polarity
b) Striking an arc on a copper block using AC or DCEP polarity
c) Striking an arc on the aluminum using DCRP
d) Grinding a ball on the end of the tungsten - ✔✔b) Striking an arc on a copper block
using AC or DCEP polarity
✔✔Gas metal arc welding electrodes for welding aluminum have a wider range of alloys
available than shielded metal arc welding. Which series of alloys is available for gas
metal arc welding but not available for shielded metal arc welding?
a) 5xxx
b) 9xxx
c) 4xxx
d) 3xxx - ✔✔a) 5xxx
✔✔Slag from shielded metal arc welding electrodes used to weld aluminum can be
corrosive if not completely removed, In some cases washing the final weld with hot
water and will remove any residual slag and reduce corrosion
a) 5% silver nitrate
b) 10% sulphuric acid
ANSWERS GRADED A+
✔✔State three advantages of the GMAW process over the SMAW process. - ✔✔-High
deposition rate,
-greater percentage of arc time due to infrequent electrode changing,
-more economical use of filler metal in the absence of stub losses, .
✔✔Which welding parameter is used most reliably to ensure that a welding procedure
developed with one machine is accurately duplicated on another machine? - ✔✔More
feed speed.
✔✔Welding equipment for gas shielded flux cored arc welding is essentially the same
as for gas metal arc welding. - ✔✔True.
✔✔The most common gas used with gas shielded flux cored arc welding is: - ✔✔75%
Argon/25% C02
✔✔The percentage of the electrode weight derived from the coating in lightly coated
electrodes is:
A)10-20%
b)20-35%
c)25-40%
d)up to 55% - ✔✔A)10-20%
✔✔When classifying Stainless Steel SMAW electrodes the last number in the
designation (E316-16) refers to the:
a) Position of welding
b) Alloy type
c) Flux type (basic ,acid or rutile)
d) Core wire composition - ✔✔c) Flux type (basic ,acid or rutile)
✔✔E49XT-1 Electrodes are designed for:
a)Vertical up welding only
b) All positions except V-down
c) Welding with C02 shielding gas only
d) Welding in the overhead position with electrodes 3.2 mm (1/8")or larger - ✔✔c)
Welding with C02 shielding gas onl
✔✔Rutile type flux cored electrodes operate on:
a) DCEN and give a globular type arc
b) DCEP and give a globular type arc
c) DCEN and give a spray type arc
d) DCEP and give a spray type arc - ✔✔d) DCEP and give a spray type arc
,✔✔Which of the following gases is required to achieve spray transfer when welding
carbon
steels?
a) Argon
b) Carbon-dioxide
c) Helium
d) Nitrogen - ✔✔a) Argon
✔✔For the ER49S-G classification, the chemistry requirements of the electrode:
a) are specified by the welding supervisor
b) are specified in the electrode standard
c) are specified by the electrode manufacturer
d) are not required to meet specific chemistry requirements - ✔✔d) are not required to
meet specific chemistry requirements
✔✔Which of the following is an important function of the electrode coating?
a) protect the molten metal
b) add hydrogen to weld metal
c) prevent slag removal
d) maintain electrode temperature
e) decrease deposition rate - ✔✔a) protect the molten metal
✔✔Calcium carbonate is an important ingredient in which type of electrodes?
a) cellulose electrodes
b) rutile electrodes
c) basic electrodes
d) oxide electrodes - ✔✔c) basic electrodes
✔✔Tungsten electrodes of a given type and size should be operated near their:
a) Maximum current carrying capability
b) Minimum current carrying capacity
c) Midpoint current carrying capacity
d) Widest range of current carrying capacity - ✔✔a) Maximum current carrying
capability
✔✔Shielded metal arc welding of aluminum should be used for:
a) Critical applications
b) Non-critical applications
c) Thick aluminum applications
d) Thin aluminum applications - ✔✔b) Non-critical applications
✔✔In general, which GMAW mode of transfer is NOT suited for the welding of thin
sheet steel?
,a) spray transfer
b) dip transfer
c) short-circuiting transfer
d) pulsed-spray transfer - ✔✔d) pulsed-spray transfer
✔✔Toughness can be best defined as:
a) a loss of ductility in the through thickness direction
b) the ability of a material to permanently deform without failure
c) the ability of a material to resist the growth of a crack
d) resistance of a metal to plastic deformation usually by indentation - ✔✔c) the ability
of a material to resist the growth of a crack
✔✔CSA W59 recommends that basic electrodes should be stored in a holding oven at a
minimum temperature of:
a) 80C
b) 50C
c) 120C
d) 230C
e) 430C - ✔✔c) 120C
✔✔E49XT-3 wires are classified with:
a) No external shielding gas
b )High helium gases
c) High Ar based gases
d)100% of co2 - ✔✔a) No external shielding gas
✔✔Submerged arc welding fluxes perform functions similar to those used on shielded
metal arc welding electrodes however they are designed to handle:
a) Lower amperage ranges
b) Currents over 2000 amps
c) Higher extrusion pressures
d) Only direct current electrodes - ✔✔b) Currents over 2000 amps
✔✔When defining the position of capability for FCAW stainless steel electrodes a "O"
indicates the electrode can be used for:
a) All position welding
b) Vertical down fillets and grooves only
c) Flat grooves and horizontal fillets only
d) Overhead fillets and grooves only - ✔✔c) Flat grooves and horizontal fillets only
✔✔Basic type flux cored electrodes operate on:
a) DCEP only and give a smooth spray type arc
b) DCEP and DCEN and are characterized by globular transfer
c) DCEN only and are characterized by globular transfer
, d) DCEP only and give a rough spray type arc - ✔✔b) DCEP and DCEN and are
characterized by globular transfer
✔✔Which of the following is considered to be a Low Alloy Steel Electrode?
a) E4927
b) E4922
c) E4918
d) E4918-A1
e) E7018-R - ✔✔d) E4918-A1
✔✔The toughness of submerged arc welding weldments is affected when ____ is
present in the weld
a) Nitrogen
b) Oxygen
c) Aluminum
d) co2 - ✔✔b) Oxygen
✔✔Welds made with self-shielded electrodes can suffer from excessive nitrogen
absorption. Excessive nitrogen in the weld pool will result in:
a) Gross porosity during solidification
b) Oxides that are removed by the fluxing action
c) No noticeable weld deposit defects
d) Cracking in the centre of the weld deposit - ✔✔a) Gross porosity during solidification
✔✔When welding aluminum with the gas tungsten arc process using a pure tungsten
electrode a ball is formed on the end. This is accomplished by:
a) Striking an arc on a steel block using DCEP polarity
b) Striking an arc on a copper block using AC or DCEP polarity
c) Striking an arc on the aluminum using DCRP
d) Grinding a ball on the end of the tungsten - ✔✔b) Striking an arc on a copper block
using AC or DCEP polarity
✔✔Gas metal arc welding electrodes for welding aluminum have a wider range of alloys
available than shielded metal arc welding. Which series of alloys is available for gas
metal arc welding but not available for shielded metal arc welding?
a) 5xxx
b) 9xxx
c) 4xxx
d) 3xxx - ✔✔a) 5xxx
✔✔Slag from shielded metal arc welding electrodes used to weld aluminum can be
corrosive if not completely removed, In some cases washing the final weld with hot
water and will remove any residual slag and reduce corrosion
a) 5% silver nitrate
b) 10% sulphuric acid
