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Types of Welders Quiz

True/False
Indicate whether the sentence or statement is true or false.
 

 1. 

AC welders are very popular because the initial cost is low and they can handle most common welding jobs.
 

 2. 

DC welders are generator type welding machines that are powered by electric motors, gas engines or other power sources.
 

 3. 

One advantage of a DC welder is that it needs to be plugged into a power source.
 

 4. 

Polarity is the direction in which the current flows across the arc.
 

 5. 

AC/DC welders have the advantage of only being able to do free hand welding, and automatic welding.
 

 6. 

A TIG welder can only be used on an AC setting.
 

 7. 

The “Tig” process of welding is called tungsten inert gas.
 

 8. 

The “Mig” process of welding is called metallic inverted gas
 

 9. 

When welding with the mig a consumable wire electrode is used instead of a rod.
 

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 10. 

What does alternating current mean?
a.
accelerating current
c.
advancing current
b.
alternating current
d.
none of the above
 

 11. 

An AC welder reverses or alternates it’s direction of flow how many times per second?
a.
20
c.
60
b.
260
d.
80
 

 12. 

What does direct current mean?
a.
descending current
c.
divisional current
b.
directional current
d.
direct current
 

 13. 

DC flows steadily and constantly:
a.
in one direction
c.
through the welding machine
b.
across the arc
d.
all of the above are correct
 

 14. 

Reverse polarity should be used to weld what types of metal?
a.
mild steel
c.
aluminum, bronze and mild steel
b.
cast iron, thin steel
d.
cast iron, copper, mild steel and brass
 

 15. 

The Tig process can also be referred to as:
a.
gas tungsten arc welding
c.
shielded metal arc welding
b.
gas metal arc welding
d.
none of the above are correct
 

 16. 

Some advantages of the tig welding process are:
a.
welds are free of corrosive residue
c.
there is no splatter when welding
b.
welds are free of fumes and slag
d.
all of the above are correct
 

 17. 

Which of the following are other forms of welding?
a.
Laser
c.
cybergas
b.
submerged arc and electroslag
d.
both a and b are correct
 



 
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