NOCTI TEST LATEST
WELDING
What happens to the GTAW torch duty cycle when using helium vs
argon - ANSWERS-Decreases
What position should the Hugh frequency control be in for GTAW or f
stainless steel - ANSWERS-Starts only
The AWS classification of GTAW tungsten, EWP, what does the "W"
represent - ANSWERS-Tungsten
What type of technology is most commonly found on GTAW machines
for AC welding - ANSWERS-Square wave technology
Which is f the following GTAW accessories does not allow for remote
current control - ANSWERS-Arc start switch
what polarity has electrons flowing from the tungsten to the work piece -
ANSWERS-DC-
Which of the following is the correct method for preparing tungsten to
weld steel? - ANSWERS-Grind the o conical shape 2-3 times diameter
END OF
PAGE
1
, NOCTI TEST LATEST
WELDING
How many cables do water- cooled GTAW torches generally have? -
ANSWERS-3
At what shoe should filler metal be added to the molten puddle? -
ANSWERS-15o
What is a proper gas flow rate for use in GTAW application -
ANSWERS-20 cfh
What is the volt- amp curve used to plot the output of a constant current
power supply - ANSWERS-Drooper
What is a typical travel speed when using the GTAW process -
ANSWERS-20 ipm
What does GMAW stand for - ANSWERS-Gas Metal Arc Welding
GMAW is generally done with what polarity? - ANSWERS-Direct
current electrode positive (DC+)
END OF
PAGE
2
, NOCTI TEST LATEST
WELDING
What type of power source is generally used for GMAW welding -
ANSWERS-Constant Voltage
What does E stand for in ER70S-6 - ANSWERS-electrode
What does "70" stand for in ER70S-3? - ANSWERS-tensile strength
What mode of metal transfer allows for only flat/horizontal position
GMAW welding - ANSWERS-Spray
What gas mixture is generally associated with spray transfer on steel? -
ANSWERS-80% AR/ 20% CO2
What gas mixture is generally associated with globular transfer on steel?
- ANSWERS-90% AR/ 10%CO2
Inadequate gas flow can cause what defect in GMAW welding? -
ANSWERS-Porosity
END OF
PAGE
3
WELDING
What happens to the GTAW torch duty cycle when using helium vs
argon - ANSWERS-Decreases
What position should the Hugh frequency control be in for GTAW or f
stainless steel - ANSWERS-Starts only
The AWS classification of GTAW tungsten, EWP, what does the "W"
represent - ANSWERS-Tungsten
What type of technology is most commonly found on GTAW machines
for AC welding - ANSWERS-Square wave technology
Which is f the following GTAW accessories does not allow for remote
current control - ANSWERS-Arc start switch
what polarity has electrons flowing from the tungsten to the work piece -
ANSWERS-DC-
Which of the following is the correct method for preparing tungsten to
weld steel? - ANSWERS-Grind the o conical shape 2-3 times diameter
END OF
PAGE
1
, NOCTI TEST LATEST
WELDING
How many cables do water- cooled GTAW torches generally have? -
ANSWERS-3
At what shoe should filler metal be added to the molten puddle? -
ANSWERS-15o
What is a proper gas flow rate for use in GTAW application -
ANSWERS-20 cfh
What is the volt- amp curve used to plot the output of a constant current
power supply - ANSWERS-Drooper
What is a typical travel speed when using the GTAW process -
ANSWERS-20 ipm
What does GMAW stand for - ANSWERS-Gas Metal Arc Welding
GMAW is generally done with what polarity? - ANSWERS-Direct
current electrode positive (DC+)
END OF
PAGE
2
, NOCTI TEST LATEST
WELDING
What type of power source is generally used for GMAW welding -
ANSWERS-Constant Voltage
What does E stand for in ER70S-6 - ANSWERS-electrode
What does "70" stand for in ER70S-3? - ANSWERS-tensile strength
What mode of metal transfer allows for only flat/horizontal position
GMAW welding - ANSWERS-Spray
What gas mixture is generally associated with spray transfer on steel? -
ANSWERS-80% AR/ 20% CO2
What gas mixture is generally associated with globular transfer on steel?
- ANSWERS-90% AR/ 10%CO2
Inadequate gas flow can cause what defect in GMAW welding? -
ANSWERS-Porosity
END OF
PAGE
3
