CWB LEVEL 2 WELDING PROCESS AND
EQUIPMENT ACTUAL EXAM AND PRACTICE
QUESTIONS AND SOLUTIONS| CURRENTLY
TESTING VERSION | ALREADY GRADED
A+|EXPERT VERIFIED FOR GUARANTEED PASS
2026-2027
The flux cored arc welding is an arc welding process usually in the semi-automatic mode,
consisting of:
A constant current power supply, a continuous speed wire feeder, a welding gun, and a
continuous filler metal electrode with a hallow core containing flux and other ingredients
Welding is process a joining process that by definition requires application of
Either heat or pressure
Name the two main methods of arc shielding
flux shielding and gas shielding
Which direction do the electrons flow in an electrical are
Cathode to anode
In are welding, the electric are is intensely hot with temperature exceeding
30,000 C
1|Page
,How does the arc voltage and arc stiffness change when the arc length is increased
Arc voltage increases and arc stiffness decreases
What type of penetration and weld width can be expected when using DC positive (GTAW)
Shallow penetration and a wide weld
Which polarity is chosen most often for direct current GTAW welding of steels and why
Direct current electrode negative. More heat is produced at the work piece leading to
deeper weld penetration
Why must shielding gas for GTAW be completely inert
Presence of active gases like oxygen and carbon dioxide the tungsten electrode and the
limit its life.
Two advantages of GTAW process
It gives high quality deposits, and the process can be used to weld virtually all metals and
alloys
Why is SMAW a very commonly used welding process
It provides great flexibility in terms of the broad range of materials and their thicknesses
that can be joined in all welding positions
SMAW uses constant current or constant voltage
constant current
2|Page
,Why is care necessary in the proper storage and handling of electrodes for welding steels
Improperly stored electrodes can pick up moisture leading to increased weld metal
hydrogen content and therefore increased risk of cold cracking in the weld zone
GMAW uses Constant Voltage or Constant Current
Constant Voltage
Which metal transfer would be applied to Cast Iron
GMAW: Short Circuiting
Which metal transfer would be applied to aluminum alloy
GMAW: Spray
Between 100% CO2 and 95% Ar-5% CO2, which shielding gas will you chose to spray in
semi-automatic welding of carbon steel
95% Ar - 5% CO2
Most common gas used with gas shielded flux cored are welding is
75% Ar - 25% CO2
The type of cored wire most suitable for air field work is
Self-shielded flux core are wire
Gas shielded flux core wires with basic ingredients are
not suited for welding out of position welds
3|Page
, The technique used for semi-automatic welding with gas shielded flux cored arc welding
drag (backhand)
In submerged arc welding process, granular flux is placed on the unwelded seam (Blank) of
the consumable electrode
ahead
What is the effect of change polarity from DCEP to DCEN on a submerged arc welding weld
deposit
The deposition rate will increase, however, the penetration is reduced and the risk of lack of
fusion type of flaws in groove welds is increased
State the greatest advantage and disadvantage of the submerged arc welding process
Greatest advantage is very high productivity possible due to high duty cycle (mechanized
process) and the high deposition rate (multiple wires and high currents). The main
disadvantage is that the process is not suitable for out of position welding
Fused Fluxes are not prone to moisture pick up
What are the effects of increasing the arc voltage using an active flux submerged are
welding of carbon steels
Increase in arc voltage increases the flux consumption and in the case of active fluxes, the
Mn and Si, content of the weld metal is increased. As a result, such fluxes should be used
4|Page
EQUIPMENT ACTUAL EXAM AND PRACTICE
QUESTIONS AND SOLUTIONS| CURRENTLY
TESTING VERSION | ALREADY GRADED
A+|EXPERT VERIFIED FOR GUARANTEED PASS
2026-2027
The flux cored arc welding is an arc welding process usually in the semi-automatic mode,
consisting of:
A constant current power supply, a continuous speed wire feeder, a welding gun, and a
continuous filler metal electrode with a hallow core containing flux and other ingredients
Welding is process a joining process that by definition requires application of
Either heat or pressure
Name the two main methods of arc shielding
flux shielding and gas shielding
Which direction do the electrons flow in an electrical are
Cathode to anode
In are welding, the electric are is intensely hot with temperature exceeding
30,000 C
1|Page
,How does the arc voltage and arc stiffness change when the arc length is increased
Arc voltage increases and arc stiffness decreases
What type of penetration and weld width can be expected when using DC positive (GTAW)
Shallow penetration and a wide weld
Which polarity is chosen most often for direct current GTAW welding of steels and why
Direct current electrode negative. More heat is produced at the work piece leading to
deeper weld penetration
Why must shielding gas for GTAW be completely inert
Presence of active gases like oxygen and carbon dioxide the tungsten electrode and the
limit its life.
Two advantages of GTAW process
It gives high quality deposits, and the process can be used to weld virtually all metals and
alloys
Why is SMAW a very commonly used welding process
It provides great flexibility in terms of the broad range of materials and their thicknesses
that can be joined in all welding positions
SMAW uses constant current or constant voltage
constant current
2|Page
,Why is care necessary in the proper storage and handling of electrodes for welding steels
Improperly stored electrodes can pick up moisture leading to increased weld metal
hydrogen content and therefore increased risk of cold cracking in the weld zone
GMAW uses Constant Voltage or Constant Current
Constant Voltage
Which metal transfer would be applied to Cast Iron
GMAW: Short Circuiting
Which metal transfer would be applied to aluminum alloy
GMAW: Spray
Between 100% CO2 and 95% Ar-5% CO2, which shielding gas will you chose to spray in
semi-automatic welding of carbon steel
95% Ar - 5% CO2
Most common gas used with gas shielded flux cored are welding is
75% Ar - 25% CO2
The type of cored wire most suitable for air field work is
Self-shielded flux core are wire
Gas shielded flux core wires with basic ingredients are
not suited for welding out of position welds
3|Page
, The technique used for semi-automatic welding with gas shielded flux cored arc welding
drag (backhand)
In submerged arc welding process, granular flux is placed on the unwelded seam (Blank) of
the consumable electrode
ahead
What is the effect of change polarity from DCEP to DCEN on a submerged arc welding weld
deposit
The deposition rate will increase, however, the penetration is reduced and the risk of lack of
fusion type of flaws in groove welds is increased
State the greatest advantage and disadvantage of the submerged arc welding process
Greatest advantage is very high productivity possible due to high duty cycle (mechanized
process) and the high deposition rate (multiple wires and high currents). The main
disadvantage is that the process is not suitable for out of position welding
Fused Fluxes are not prone to moisture pick up
What are the effects of increasing the arc voltage using an active flux submerged are
welding of carbon steels
Increase in arc voltage increases the flux consumption and in the case of active fluxes, the
Mn and Si, content of the weld metal is increased. As a result, such fluxes should be used
4|Page
