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GTAW Topic 1-6

Authored by Aaron Schmitt

Professional Development

11th Grade - Professional Development

Used 39+ times

GTAW Topic 1-6
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12 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is an inert gas?

Inert gas reacts chemically with the molten weld puddle, adding needed oxygen to the environment

Inert gas is a form of oxygen, which helps the puddle cool down

Inert gas does not react chemically with the molten weld puddle, allowing the puddle to cool in an oxygen-free atmosphere.

Inert gas is another word for carbon dioxide

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does an autogenous weld mean?

The weld has the addition of filler metal

The weld is full of holes

The weld is made without the addition of filler metal

The weld is made by adding in tungsten to the puddle

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Does GTAW use a consumable or non-consumable electrode?

Consumable

Non-consumable

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

GTAW was first called heli-arc welding. Why?

It was developed for helicopter repairs

It used to mainly use helium for shielding

It was developed by a helicopter pilot

Heli-arc was a GTAW machine manufacturer

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Is GTAW constant current or constant voltage?

Constant current

Constant voltage

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is tungsten used for GTAW electrodes?

Because it is rare

Because it doesn't conduct electricity

Because it has the highest melting point of any metal

Because it can be added to the base metal

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the difference between direct current (DC) and alternating current (AC)?

Direct current travels in one direction and alternating current changes directions

Direct current is most efficient and alternating current takes more time

Direct current alternates direction and alternating current travels in one direction

Direct current stops the current and alternating current doesn't

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