CWB 2 Visual Weld Inspector Exam (solved & updated).
A consumable electrode is: - correct answer -AN electrode which melts and provides metal to fill the
joint
The weld heat affected zone is: - correct answer -the portion of the base metal adjacent to the weld
metal whose properties have been changed due to the heat of welding
When an arc is formed between two electrodes - correct answer -electricity flows from negative
cathode to positive anode
The magnetic pinch force helps in the process of the detaching the molten metal drops from the
electrode tip. The magnetic force - correct answer -increases as the square of the current causing
smaller and smaller droplets to be detached
The electric current for welding must be transformed from - correct answer -High voltage, low amperage
to low voltage, high amperage
The major advantage of electron beam welding process is - correct answer -full penetration welds on
thick material in one pass
The progress of welding with Electroslag welding process is - correct answer -Vertical up
Explosion welding - correct answer -is solid state process in which coalescence is produced through high
speed impacting of two or more materials by controlled detonation
A typical application for thermite welding is - correct answer -joining of rails
Welding without filler metal with GTAW process is referred to as - correct answer -autogenous welding
,A typical weld flaw associated with GTAW process is - correct answer -porosity
SMAW power sources typically have a volt-ampere curve that is - correct answer -drooping
Once a box of E49XX low hydrogen electrodes has been opened the electrodes may remain at ambient
temperature for up to a maximum of - correct answer -4 hours
Shielded Metal ARC Welding (SMAW) process - correct answer -establishes an arc between the end of a
covered electrode and the work piece.
The spray mode of metal transfer is achieved with - correct answer -high amperage, high voltage and
argon-rich shielding gas
digital wire feeders - correct answer -have feedback systems to maintain the preset wire feed speed
wire designated by CSA standard W48 as an E491T-9MJ-H8 - correct answer -Results in weld deposit
with a maximum of 8 ml diffusible hydrogen per 100 g of weld metal
Self shield flux cored wires are - correct answer -better able to tolerate air currents
The AWS classes metal cored wire along with - correct answer -solid wires
SAW Fluxes that significantly influence the composition of the weld metal through slag/metal reactions
are called - correct answer -active
Resistance welding of aluminum - correct answer -Can be done but with greater difficulty due to its low
resistivity
The plasma arc welding process is similar to what other welding process in principles of operation -
correct answer -GTAW
,For a flat weld profile and good penetration profile using the MCAW process - correct answer -15 degree
travel angle using push technique should be used
What is the effect of tip to work distance (electrical sickout on deposition rate of submerged are welding
- correct answer -decreasing tip to work distance without adjusting any other variable will cause a
increase in deposition rate
Electrode stick out is measured - correct answer -From tip of nozzle to end of electrode
Contact tip-to-work is the sum (CTTW) - correct answer -of the electrode extension and arc length
Increasing electrical sickout - correct answer -decreases voltage, decreases current and increases
resistance
Which welding process for GMAW has large weld pool and is rather large and difficult to control out of
position - correct answer -Spray transfer
Which welding process for GMAW has excessive spatter - correct answer -Globular transfer
Which welding process for GMAW usually has lack of fusion - correct answer -Short Circuit
what electrodes never go in holding or baking oven - correct answer -cellulosic
Submerged Arc Welding disadvantage - correct answer -Requires inter-pass and post weld slag removal
What welding process has the greatest HAZ - correct answer -Electroslag
GTAW when a BALL is formed on Tungsten - correct answer -Aluminum
, Which welding process can be done outside Earth's atmosphere - correct answer -Diffusion
With tungsten arc, most of the current across the arc is carried by - correct answer -electrons
Electrode beam welding has - correct answer -a very narrow weld and heat affected zone
Which gases are used with the GMAW process - correct answer -argon and CO2 and their mixtures in
various proportions
Which welding process is non-consumable electrode process - correct answer -GTAW
Which shielding gas does GMAW use for spray transfer - correct answer -95% Argon and 5% CO2
The deposition rate of SMAW electrodes is increased by including - correct answer -Iron Power
Electrode in Flux cored are welding is - correct answer -Tubular wire containing flux or other ingredients
What welding process is not used in overhead position - correct answer -SAW (Submerged Arc Welding
SAW Fluxes that significantly influence the composition of the weld metal through slag/metal reactions
are called - correct answer -are classified in conjunction with welding wire forming a flux designation
A welding arc consists of a - correct answer -high current and low voltage
The heat of the welding arc is used to - correct answer -locally melt the base material and filler material
to create fusion upon solidification
A consumable electrode is: - correct answer -AN electrode which melts and provides metal to fill the
joint
The weld heat affected zone is: - correct answer -the portion of the base metal adjacent to the weld
metal whose properties have been changed due to the heat of welding
When an arc is formed between two electrodes - correct answer -electricity flows from negative
cathode to positive anode
The magnetic pinch force helps in the process of the detaching the molten metal drops from the
electrode tip. The magnetic force - correct answer -increases as the square of the current causing
smaller and smaller droplets to be detached
The electric current for welding must be transformed from - correct answer -High voltage, low amperage
to low voltage, high amperage
The major advantage of electron beam welding process is - correct answer -full penetration welds on
thick material in one pass
The progress of welding with Electroslag welding process is - correct answer -Vertical up
Explosion welding - correct answer -is solid state process in which coalescence is produced through high
speed impacting of two or more materials by controlled detonation
A typical application for thermite welding is - correct answer -joining of rails
Welding without filler metal with GTAW process is referred to as - correct answer -autogenous welding
,A typical weld flaw associated with GTAW process is - correct answer -porosity
SMAW power sources typically have a volt-ampere curve that is - correct answer -drooping
Once a box of E49XX low hydrogen electrodes has been opened the electrodes may remain at ambient
temperature for up to a maximum of - correct answer -4 hours
Shielded Metal ARC Welding (SMAW) process - correct answer -establishes an arc between the end of a
covered electrode and the work piece.
The spray mode of metal transfer is achieved with - correct answer -high amperage, high voltage and
argon-rich shielding gas
digital wire feeders - correct answer -have feedback systems to maintain the preset wire feed speed
wire designated by CSA standard W48 as an E491T-9MJ-H8 - correct answer -Results in weld deposit
with a maximum of 8 ml diffusible hydrogen per 100 g of weld metal
Self shield flux cored wires are - correct answer -better able to tolerate air currents
The AWS classes metal cored wire along with - correct answer -solid wires
SAW Fluxes that significantly influence the composition of the weld metal through slag/metal reactions
are called - correct answer -active
Resistance welding of aluminum - correct answer -Can be done but with greater difficulty due to its low
resistivity
The plasma arc welding process is similar to what other welding process in principles of operation -
correct answer -GTAW
,For a flat weld profile and good penetration profile using the MCAW process - correct answer -15 degree
travel angle using push technique should be used
What is the effect of tip to work distance (electrical sickout on deposition rate of submerged are welding
- correct answer -decreasing tip to work distance without adjusting any other variable will cause a
increase in deposition rate
Electrode stick out is measured - correct answer -From tip of nozzle to end of electrode
Contact tip-to-work is the sum (CTTW) - correct answer -of the electrode extension and arc length
Increasing electrical sickout - correct answer -decreases voltage, decreases current and increases
resistance
Which welding process for GMAW has large weld pool and is rather large and difficult to control out of
position - correct answer -Spray transfer
Which welding process for GMAW has excessive spatter - correct answer -Globular transfer
Which welding process for GMAW usually has lack of fusion - correct answer -Short Circuit
what electrodes never go in holding or baking oven - correct answer -cellulosic
Submerged Arc Welding disadvantage - correct answer -Requires inter-pass and post weld slag removal
What welding process has the greatest HAZ - correct answer -Electroslag
GTAW when a BALL is formed on Tungsten - correct answer -Aluminum
, Which welding process can be done outside Earth's atmosphere - correct answer -Diffusion
With tungsten arc, most of the current across the arc is carried by - correct answer -electrons
Electrode beam welding has - correct answer -a very narrow weld and heat affected zone
Which gases are used with the GMAW process - correct answer -argon and CO2 and their mixtures in
various proportions
Which welding process is non-consumable electrode process - correct answer -GTAW
Which shielding gas does GMAW use for spray transfer - correct answer -95% Argon and 5% CO2
The deposition rate of SMAW electrodes is increased by including - correct answer -Iron Power
Electrode in Flux cored are welding is - correct answer -Tubular wire containing flux or other ingredients
What welding process is not used in overhead position - correct answer -SAW (Submerged Arc Welding
SAW Fluxes that significantly influence the composition of the weld metal through slag/metal reactions
are called - correct answer -are classified in conjunction with welding wire forming a flux designation
A welding arc consists of a - correct answer -high current and low voltage
The heat of the welding arc is used to - correct answer -locally melt the base material and filler material
to create fusion upon solidification
