L1 M7

Welding rods are also called electrodes

• true
• false

NEMA has set a standard for duty cycles based on a ______ period.

• 6 min
• 10 min
• 1 hr
• 24 hr

When welding with DCEP, electrons flow from the _____.

• electrode to the workpiece
• workpiece to the electrode
• workpiece to the ground
• positive to the negative

A(n) _______ is used to remove slag after the weld is deposited.

• cutting torch
• chipping hammer
• electrode holder
• inverter

In North America, alternating current is rated at 50hz.

• true
• false

The bill on your welding cap should be turned to protect _____.

• The side of your face
• Your forehead
• The top of your head
• The back of your neck

The longer the welding leads, the larger the cable should be to _______.

• increase conductor resistance
• decrease conductor insulation
• increase current drop
• reduce voltage drop

A welding machine with a 60% duty cycle can operate at rated output for 6 minutes out of every 10 minutes without overheating. What is the rated output measured in?

• max voltage
• min voltage
• max voltage
• min amperage

___________ determines whether current flows into the workpiece or toward the electrode in a DC circuit.

• Current
• Frequency
• Resistance
• Polarity

Make sure welder switch is ____ before plugging into or unplugging from the wall.

• On
• Off
• Neutral
• A/C