GMAW Power Supply & Wire Feeder (WDEQ4)

The learner will identify the basic parts of a GMAW power source and wire feeder. The Miller Electric Mfg. Co. information included in this learning activity is reproduced with the permission of Miller Electric Mfg. Co., © Miller Electric Mfg. Co., All Rights Reserved.

Author - Craig Schmidt


Question 1:

Identify item 1.

Question Image

Answer 1:

CV power supply

Answer 2:

Voltage display

Answer 3:

Amperage display

Answer 4:

CC power supply


Correct Answer:

Voltage display

Feedback:

Voltage is displayed to match that of the wire feeder unit.


Question 2:

Identify item 2.

Question Image

Answer 1:

Negative terminal

Answer 2:

Positive terminal

Answer 3:

On/off switch

Answer 4:

Option adjustment knob


Correct Answer:

Option adjustment knob

Feedback:

The option adjustment knob is used to adjust power source settings such as the wire, gas, and process being used.


Question 3:

Identify item 3.

Question Image

Answer 1:

Negative terminal 

Answer 2:

Positive terminal

Answer 3:

On/off switch

Answer 4: Output


Correct Answer:

Positive terminal


Question 4:

Identify item 4.

Question Image

Answer 1: Remote

Answer 2:

On/off switch

Answer 3:

CV power supply

Answer 4:

Voltage display


Correct Answer:

CV power supply


Question 5:

Identify item 5.

Question Image

Answer 1:

Negative terminal

Answer 2:

Positive terminal

Answer 3:

On/off switch

Answer 4: Output


Correct Answer:

Negative terminal


Question 6:

Identify item 6.

Question Image

Answer 1:

Negative terminal

Answer 2:

Positive terminal

Answer 3:

Option adjustment

Answer 4:

On/off switch


Correct Answer:

On/off switch


Question 7:

Identify item 1.

Question Image

Answer 1: Welder

Answer 2:

Welding gun connection

Answer 3:

Power cable

Answer 4:

Negative cable


Correct Answer:

Welding gun connection

Feedback:

During installation, seat the welding gun all the way into the connection and secure with the tightening nut.


Question 8:

Identify item 2.

Question Image

Answer 1:

Welding gun

Answer 2:

Welding wire

Answer 3:

Drive roll unit

Answer 4:

Electrode lead


Correct Answer:

Drive roll unit

Feedback: The drive roll unit houses the drive rolls.


Question 9:

Identify item 3.

Question Image

Answer 1:

Ground cable

Answer 2:

Welding wire

Answer 3:

Work lead

Answer 4:

Electrode lead


Correct Answer:

Electrode lead

Feedback:

The electrode lead comes from the positive terminal on the CV power source.


Question 10:

Identify item 4.

Question Image

Answer 1:

Welding wire

Answer 2:

Drive roll pressure adjustment

Answer 3:

Voltage adjustment

Answer 4:

Electrode lead


Correct Answer:

Drive roll pressure adjustment

Feedback:

The drive roll pressure adjustment adjusts the amount of pressure the drive rolls apply to the welding wire.


Question 11:

Identify item 5.

Question Image

Answer 1:

Work lead

Answer 2:

Electrode lead

Answer 3:

Electrode wire spool


Correct Answer:

Electrode wire spool


Question 12:

Identify item 6.

Question Image

Answer 1:

Spool brake unit

Answer 2:

Drive roll unit

Answer 3:

Welding gun connection


Correct Answer:

Spool brake unit

Feedback:

The spool brake unit adjusts the amount of drag that is placed on the electrode wire spool.


Question 13:

Identify item 7.

Question Image

Answer 1:

On/off switches

Answer 2: Volume

Answer 3:

Voltage/amperage adjustment


Correct Answer:

Voltage/amperage adjustment


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