MIG Welding Test / Expert Strategies, Review of Key
Quizzes, And Practice Questions for Guaranteed
Success
What power source is required to perform GMAW (MIG) welding? -
(ANSWER)DC constant potential - voltage
What types of metal transfer are possible with GMAW (MIG) process when
welding? - (ANSWER)Short circuit, Globular, and Spray Transfer
List two advantages and two disadvantages of GMAW (MIG) welding. -
(ANSWER)Advantages: higher production rate, faster welding speed
Disadvantages: less portable, requires more operator skills and techniques for
welding and equipment setup
What is the main function of the contact tip in a MIG welding gun? -
(ANSWER)Relay welding currents from the power source to the filler metal (guide
the filler metal to work piece)
Which diameters of wire sizes are most commonly used in short circuit metal
transfer when MIG circuit metal transfer when MIG welding? - (ANSWER)0.023,
0.030, 0.035, 0.045
What current and polarity is most commonly used when GMAW wedling? -
(ANSWER)DC - direct current reverse polarity
, What type of current is not used when GMAW welding? - (ANSWER)Alternating
Current (AC)
What does the term MIG stand for? - (ANSWER)Metal Inert Gas
What does the term GMAW stand for? - (ANSWER)Gas Metal Arc Welding
What is the purpose of a shielding gas when GMAW? - (ANSWER)1) To prevent
contamination of the weld metal
2) To influence the welding arc and effects the width and depth of weld
penetration and amount of spatter
On a GMAW welding setup what causes the amperage to increase or decrease? -
(ANSWER)The dial on the wire feed mechanism. High amperage, more wire. Low
amperage, less wire speed.
The constant potential welding machine has a voltage range of _____ to _____
volts? - (ANSWER)15-48 V
To perform short circuit metal transfer when GMAW welding a voltage range of
what required? - (ANSWER)15-22 V
What type of metal transfer when GMAW welding requires higher current
voltages? - (ANSWER)Spray transfer
Quizzes, And Practice Questions for Guaranteed
Success
What power source is required to perform GMAW (MIG) welding? -
(ANSWER)DC constant potential - voltage
What types of metal transfer are possible with GMAW (MIG) process when
welding? - (ANSWER)Short circuit, Globular, and Spray Transfer
List two advantages and two disadvantages of GMAW (MIG) welding. -
(ANSWER)Advantages: higher production rate, faster welding speed
Disadvantages: less portable, requires more operator skills and techniques for
welding and equipment setup
What is the main function of the contact tip in a MIG welding gun? -
(ANSWER)Relay welding currents from the power source to the filler metal (guide
the filler metal to work piece)
Which diameters of wire sizes are most commonly used in short circuit metal
transfer when MIG circuit metal transfer when MIG welding? - (ANSWER)0.023,
0.030, 0.035, 0.045
What current and polarity is most commonly used when GMAW wedling? -
(ANSWER)DC - direct current reverse polarity
, What type of current is not used when GMAW welding? - (ANSWER)Alternating
Current (AC)
What does the term MIG stand for? - (ANSWER)Metal Inert Gas
What does the term GMAW stand for? - (ANSWER)Gas Metal Arc Welding
What is the purpose of a shielding gas when GMAW? - (ANSWER)1) To prevent
contamination of the weld metal
2) To influence the welding arc and effects the width and depth of weld
penetration and amount of spatter
On a GMAW welding setup what causes the amperage to increase or decrease? -
(ANSWER)The dial on the wire feed mechanism. High amperage, more wire. Low
amperage, less wire speed.
The constant potential welding machine has a voltage range of _____ to _____
volts? - (ANSWER)15-48 V
To perform short circuit metal transfer when GMAW welding a voltage range of
what required? - (ANSWER)15-22 V
What type of metal transfer when GMAW welding requires higher current
voltages? - (ANSWER)Spray transfer
