WELDING RED SEAL EXAM PREP QUESTIONS &
ANSWERS
What is used to check the inter-pass temperature of a welded joint - Answer -
Temperature stick
What is the temperature at which an electrode oven is set for storage - Answer -121*C/
250*F
Which unit is used to measure the force or pressure in a welding circuit - Answer -Volts
Which Method of weld testing provides the most comprehensive information - Answer -
Radiography
What is the angle of cut required to make a template for a 3 piece 90 degree elbow -
Answer -22.5 degrees
What is the purpose of a groove angle when welding thick plates - Answer -To allow
access to the root of the weld
What is done to prepare a threaded area before build up? - Answer -Remove the worn
threads by machining or grinding
What does the flow meter measure - Answer -Volume of gas
When is gas tungsten arc welding process used - Answer -When welding on thin or
alloyed metal
Which shielding medium is most often used for carbon steel in short circuit transfer
mode - Answer -100% CO2
What is the alternate term for push (lead) welding - Answer -Forehand welding
What is the alternate term for drag welding? - Answer -Backhand welding
When welding the first passes of thick groove joints with a welding backing, which
welding technique should be used? Why? - Answer -First pass should be a drag
technique. Allows for deeper penetration.
How far should the contact tip be recessed for spray transfer in GMAW? - Answer -2-
3mm or 3/32- 1/8"
What are the 3 primary variables in GMAW - Answer -1. Current 2. Voltage 3. Travel
speed
, What are the 3 secondary variables in GMAW? - Answer -Travel angle
Work angle
Tip to work distance
Which GMAW transfer mode is most prone to incomplete fusion? - Answer -Short
circuit
What is the electrode classification for EWP? What colour is the band? - Answer -Pure
tungsten
Green band
What are the 3 types of GTAW electrodes? - Answer -Pure tungsten
Throriated Tungsten
Zirconium alloyed Tungsten
In GTAW, which electrode end is used with DCEP - Answer -A tapered-balled end
Most regulators deliver a constant outlet pressure to the flow meter of approximately
how much PSI? - Answer -50 PSI or 345 KPA
Which type of electrode should not be stored in a rod oven? - Answer -Cellulosic rods
An electrode holder is rated by? - Answer -The amp rated capacity
Excessive spatter and undercut of a weld can be caused by? - Answer -High current
How many Amps, Volts and duty cycle should a typical GTAW power source run at? -
Answer -3-350 Amps
10-35 Volts
60% duty cycle
In GTAW which electrode end is used with DCEN - Answer -Pointed end (sharp taper)
DCEN is also referred to as: - Answer -Straight polarity
In GTAW, which type of electrode is least likely to become contaminated if it touches
the weld puddle? - Answer -Thoriated Tungsten
What is the electrode classification for EWTh-3? What colour is the band? - Answer -1-
2% thoriated strip added to tungsten.
Blue band
What is necessary to stabilize the arc when AC is used? - Answer -High frequency
current
ANSWERS
What is used to check the inter-pass temperature of a welded joint - Answer -
Temperature stick
What is the temperature at which an electrode oven is set for storage - Answer -121*C/
250*F
Which unit is used to measure the force or pressure in a welding circuit - Answer -Volts
Which Method of weld testing provides the most comprehensive information - Answer -
Radiography
What is the angle of cut required to make a template for a 3 piece 90 degree elbow -
Answer -22.5 degrees
What is the purpose of a groove angle when welding thick plates - Answer -To allow
access to the root of the weld
What is done to prepare a threaded area before build up? - Answer -Remove the worn
threads by machining or grinding
What does the flow meter measure - Answer -Volume of gas
When is gas tungsten arc welding process used - Answer -When welding on thin or
alloyed metal
Which shielding medium is most often used for carbon steel in short circuit transfer
mode - Answer -100% CO2
What is the alternate term for push (lead) welding - Answer -Forehand welding
What is the alternate term for drag welding? - Answer -Backhand welding
When welding the first passes of thick groove joints with a welding backing, which
welding technique should be used? Why? - Answer -First pass should be a drag
technique. Allows for deeper penetration.
How far should the contact tip be recessed for spray transfer in GMAW? - Answer -2-
3mm or 3/32- 1/8"
What are the 3 primary variables in GMAW - Answer -1. Current 2. Voltage 3. Travel
speed
, What are the 3 secondary variables in GMAW? - Answer -Travel angle
Work angle
Tip to work distance
Which GMAW transfer mode is most prone to incomplete fusion? - Answer -Short
circuit
What is the electrode classification for EWP? What colour is the band? - Answer -Pure
tungsten
Green band
What are the 3 types of GTAW electrodes? - Answer -Pure tungsten
Throriated Tungsten
Zirconium alloyed Tungsten
In GTAW, which electrode end is used with DCEP - Answer -A tapered-balled end
Most regulators deliver a constant outlet pressure to the flow meter of approximately
how much PSI? - Answer -50 PSI or 345 KPA
Which type of electrode should not be stored in a rod oven? - Answer -Cellulosic rods
An electrode holder is rated by? - Answer -The amp rated capacity
Excessive spatter and undercut of a weld can be caused by? - Answer -High current
How many Amps, Volts and duty cycle should a typical GTAW power source run at? -
Answer -3-350 Amps
10-35 Volts
60% duty cycle
In GTAW which electrode end is used with DCEN - Answer -Pointed end (sharp taper)
DCEN is also referred to as: - Answer -Straight polarity
In GTAW, which type of electrode is least likely to become contaminated if it touches
the weld puddle? - Answer -Thoriated Tungsten
What is the electrode classification for EWTh-3? What colour is the band? - Answer -1-
2% thoriated strip added to tungsten.
Blue band
What is necessary to stabilize the arc when AC is used? - Answer -High frequency
current
