GMAW TEST - SKILLS USA EXAM QUESTIONS AND ANSWERS.docx

GMAW TEST - SKILLS USA EXAM
QUESTIONS AND ANSWERS
What does GMAW stand for? - - -
correct answer ✅Gas Metal Arc Welding


GMAW is generally done with what polarity? - - -
correct answer ✅


What type of power source is generally used for GMAW welding? - -
-
correct answer ✅Variable Voltage


What does the "E" stand for in ER70S-6? - - -
correct answer ✅Electrode


What does the "70" stand for in the ER70S-3? - - -
correct answer ✅Tensile Strength


What mode of metal transfer allows for only flat/horizontal position
GMAW welding? - - -
correct answer ✅Spray

, GMAW TEST - SKILLS USA EXAM
QUESTIONS AND ANSWERS
During short circuit transfer, what does increasing the inductance
do? - - -
correct answer ✅Slows down the rate of current rise when the
sort is produced.


During spray transfer, what does increasing the inductance do? - - -
correct answer ✅Nothing


What gas mixture is generally associated with spray transfer on
steel? - - -
correct answer ✅80% AR/20% CO2


What gas mixture is generally associated with globular transfer on
steel? - - -
correct answer ✅100% CO2


What gas mixture is generally associated with pulse transfer on
steel? - - -
correct answer ✅90% AR/10% CO2


Inadequate gas flow can cause what defect in GMAW welding? - - -
correct answer ✅Porosity