Gas Tungsten Arc Welding: Equipment & Set-Up

Which of the following currents can be used to weld both carbon and stainless steel?

• DC positive

• AC negative

• DC negative

• AC positive

What rate did the welder use when setting the flow meter?

• 15 to 20 cubic feet per hour

• 5 to 10 cubic feet per hour

• 20 to 25 cubic feet per hour

• 10 to 20 cubic feet per hour

What is the duty cycle percentage on a Dynasty® machine if the volts are set to 200?

• 10 percent

• 40 percent

• 60 percent

• 80 percent

Which of the following parts of the welding torch has a split in it to allow it to be tightened up and help the electrode from slipping?

• Cup

• Collet

• Nozzle

• Cap

Which of the following is NOT a type of tungsten mentioned in the segment?

• Lanthanated

• Ceriated

• Zirconiated

• Thoriated

What are the characteristics of argon gas when used in a welding environment?

• Hot gas, excites molecules, very light

• Neutral gas, provides good coverage, slows molecules

• Cold gas, lays very low, provides good coverage

• Warm gas, lays high, very heavy

Where does the welder state is the best place to put the ground clamp?

• Attached to the welding table

• On any metal surface

• Attached directly to the piece being worked on

• On the floor next to the welder

What is the function of a rod with copper flash on it?

• Allows the puddle to remain fluid longer

• Provides an attractive look to the weld surface

• Prevents oxidization and rusting

• Allows for a faster freezing puddle

When the welding machine is set to HF impulse, what happens once the pedal is pressed?

• The welding machine is turned off

• The gas flow is automatically stopped

• The current will change from positive to negative

• The high frequency will jump to allow the establishment of the arc

Which of the following is NOT one of the practices the welder suggests when cleaning up at the end of the day?

• Check all hoses for leaks

• Wrap up the foot pedal

• Turn off the water pump

• Sweep the floor