CWB 2 VISUAL WELD INSPECTOR EXAM
WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST 2025 ALREADY GRADED A+
When trying to detect a centerline crack in a weld, where would you place the
yoke
Across the weld
How are arc strikes avoided when using prods
Turn the power on after the prods are in place, and turn the power off before
removing prods
What would be a typical current for prods spaced 150 mm (6 in) apart
About 600 Amps
Can AC detect sub-surface defects
No. can not detect sub surface defects
What advantage does the wet fluorescent particle method have over the dry
particle method
Higher Sensitivity
Is it possible for yoke to work through thin coating of paint
Yes
,What weight should an AC and DC yoke be capable of lifting
AC: 4.5kg (10 lbs.), DC 18 kg (40lbs)
The electric current for welding must be transformed from
High voltage, low amperage to low voltage, high amperage
The major advantage of electron beam welding process is
full penetration welds on thick material in one pass
The progress of welding with Electroslag welding process is
Vertical up
Explosion welding
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
joining of rails
Welding without filler metal with GTAW process is referred to as
autogenous welding
A typical weld flaw associated with GTAW process is
porosity
SMAW power sources typically have a volt-ampere curve that is
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
,4 hours
Shielded Metal ARC Welding (SMAW) process
establishes an arc between the end of a covered electrode and the work piece.
The spray mode of metal transfer is achieved with
high amperage, high voltage and argon-rich shielding gas
digital wire feeders
have feedback systems to maintain the preset wire feed speed
wire designated by CSA standard W48 as an E491T-9MJ-H8
Results in weld deposit with a maximum of 8 ml diffusible hydrogen per 100 g of
weld metal
Self shield flux cored wires are
better able to tolerate air currents
The AWS classes metal cored wire along with
solid wires
A consumable electrode is:
AN electrode which melts and provides metal to fill the joint
The weld heat affected zone is:
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
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
increases as the square of the current causing smaller and smaller droplets to be
detached
SAW Fluxes that significantly influence the composition of the weld metal through
slag/metal reactions are called
active
Resistance welding of aluminum
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
GTAW
For a flat weld profile and good penetration profile using the MCAW process
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
decreasing tip to work distance without adjusting any other variable will cause a
increase in deposition rate
Electrode stick out is measured
From tip of nozzle to end of electrode
Contact tip-to-work is the sum (CTTW)
of the electrode extension and arc length
Increasing electrical sickout
decreases voltage, decreases current and increases resistance
WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST 2025 ALREADY GRADED A+
When trying to detect a centerline crack in a weld, where would you place the
yoke
Across the weld
How are arc strikes avoided when using prods
Turn the power on after the prods are in place, and turn the power off before
removing prods
What would be a typical current for prods spaced 150 mm (6 in) apart
About 600 Amps
Can AC detect sub-surface defects
No. can not detect sub surface defects
What advantage does the wet fluorescent particle method have over the dry
particle method
Higher Sensitivity
Is it possible for yoke to work through thin coating of paint
Yes
,What weight should an AC and DC yoke be capable of lifting
AC: 4.5kg (10 lbs.), DC 18 kg (40lbs)
The electric current for welding must be transformed from
High voltage, low amperage to low voltage, high amperage
The major advantage of electron beam welding process is
full penetration welds on thick material in one pass
The progress of welding with Electroslag welding process is
Vertical up
Explosion welding
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
joining of rails
Welding without filler metal with GTAW process is referred to as
autogenous welding
A typical weld flaw associated with GTAW process is
porosity
SMAW power sources typically have a volt-ampere curve that is
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
,4 hours
Shielded Metal ARC Welding (SMAW) process
establishes an arc between the end of a covered electrode and the work piece.
The spray mode of metal transfer is achieved with
high amperage, high voltage and argon-rich shielding gas
digital wire feeders
have feedback systems to maintain the preset wire feed speed
wire designated by CSA standard W48 as an E491T-9MJ-H8
Results in weld deposit with a maximum of 8 ml diffusible hydrogen per 100 g of
weld metal
Self shield flux cored wires are
better able to tolerate air currents
The AWS classes metal cored wire along with
solid wires
A consumable electrode is:
AN electrode which melts and provides metal to fill the joint
The weld heat affected zone is:
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
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
increases as the square of the current causing smaller and smaller droplets to be
detached
SAW Fluxes that significantly influence the composition of the weld metal through
slag/metal reactions are called
active
Resistance welding of aluminum
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
GTAW
For a flat weld profile and good penetration profile using the MCAW process
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
decreasing tip to work distance without adjusting any other variable will cause a
increase in deposition rate
Electrode stick out is measured
From tip of nozzle to end of electrode
Contact tip-to-work is the sum (CTTW)
of the electrode extension and arc length
Increasing electrical sickout
decreases voltage, decreases current and increases resistance
