GMAW
GMAW
GMAW
GMAW/SAFETY
SAFETY
100

  1. Which AWS electrode classification is correct for GMAW wire?

    1. ER70S-3

    2. E70S-6

    3. E70-S3

    4. E71T-1

What is ER70S-3?

100

  1. What does the 70 indicate in the electrode classification ER70S-3?

    1. Trade name

    2. Tensile Strength 

    3. Yield Strength

           4. Hardness


What is the Tensile Strength?

100

  1. What positions and types of welds can be successfully welded using the spray transfer mode on carbon steel?    

    1. 1F, 1G and  2F,

    2. 1G and 2G open root welds

    3. 2G and 3G open welds.

    4. All joint types in all positions.

What is 1F, 1G and  2F?

100

True or False: A minimum of 80% Argon is required to achieve a spray transfer.

  1. True

  2. False

What is True?

100

One must never cut or weld directly against: 

a) cast iron 

b) concrete 

c) the workbench 

d) a non-flammable surface

What is concrete? 

200

  1. Electric current is transferred to the electrode through the

    1. gun cable liner. 

    2. contact tube.

    3. wire feed rolls.

           4. gas diffuser.


What is the contact tube?

200

  1. Excessive amounts of weld spatter in the nozzle may cause

    1. lack of fusion.

    2. undercutting.

    3. poor shielding. 

    4. longitudinal cracks

What is poor shielding?

200

  1. Which shielding gas or gas mixture is most often used for welding carbon steel with the short-circuiting transfer mode?

    1. 100% Argon

    2. 10% Carbon dioxide, 90% Helium

    3. 98% Argon, 2% Oxygen

    4. 75% Argon, 25% Carbon Dioxide

What is 75% Argon and 25% Carbon Dioxide?

200

True or False: In the electrode classification ER70S-6, the "S" stands for short-circuiting transfer.

  1. True 

  2. False

What is False?

200

One must never operate arc welding equipment while: 

a) standing on wet or damp floors

b) in poorly lighted areas 

c) someone else is close by 

d) in a confined area

What is when standing on wet or damp floors?

300

  1. Which of the following is considered an advantage of the GMAW process?

    1. Higher deposition rates than manual processes.

    2. Easy to use compared to manual processes.

    3. Less electrode waste than with SMAW.

           4. All of the above.


What is All of the above?

300

  1. Which of the following is not recommended when welding with short-circuiting transfer?

    1. Welding in all positions.

    2. Welding open roots.

    3. Welding on thin materials.

    4. Welding heavy plate

What is Welding heavy plate?

300

Which one of the gases listed below is inert?

  1. Carbon Dioxide

  2. Hydrogen

  3. Argon

  4. Oxygen

What is Argon?

300

What are materials called that catch fire easily? 

a) accidents 

b) combustibles 

c) flammable 

d) gasses

What are combustibles?

300

Potential hazards relating to arc welding are: 

a) radiation 

b) fumes 

c) toxic gases 

d) all of the above

What is all of the above?

400

  1. What shielding gas or gas mixture will not produce spray transfer?

    1. 100% Argon

    2. 98% Argon/2% C02

    3. 90% Argon/10% CO2

           4. 100% CO2


What is 100% CO2?

400

  1. Which of the following is not an advantage of the GMAW process?

    1. Higher deposition rates.

    2. Relatively easy process for a beginner to learn.

    3. Can be used to weld ferrous and nonferrous metals.

    4. Good for use in windy areas.

What is Good for use in windy areas?

400

True or False: 

  1. A constant voltage power supply is the most common type used for the GMAW process.

    1. True 

    2. False

What is true?

400

What is arc burn?  

a) another name for a severe sunburn 

b) a burn caused by the arc in coming in contact with bare skin

c) a burn on the exterior membrane of the eye caused by exposure to infrared and ultra-violet light from that flash of an electric 

d) damage to the clothing due to extreme heat of the arc.

What is a burn caused by the arc in coming in contact with bare skin?

400

One should never enter the welding shop without wearing: 

a) gloves 

b) safety glasses

c) helmet 

d) leathers

What are safety glasses?

500

  1. The contact tube should be

    1. sized to match the wire diameter.

    2. slightly smaller than the wire diameter.

    3. 1-1/2 times larger than the wire diameter.

    4. 2 times larger than the wire diameter.

What is sized to match the wire diameter

500

  1. The transfer mode that uses low currents, low voltage, and small diameter electrode wire to weld in all positions is called

    1. spray transfer.

    2. globular transfer.

    3. droplet transfer.

    4. short-circuiting transfer

What is short-circuiting transfer?

500

True or False: The rate at which the arc moves along the weld joint is called the wire feed speed.

  1. True 

  1. False

What is False?

500

What should one never use on gas cylinders, regulators, connections and hoses? 

a) wrenches 

b) tape 

c) leak detectors 

d) oil

e) soap

What is oil?

500

Federal regulation require that hazardous information about products be provided to all users of the products.  The forms used to provide this information are called: 

Information forms, IF’s 

Hazardous information sheets, HIS’s 

Occupational safety and hazard forms, OSHF’s 

Material safety data sheets, MSDS’s

What are Material safety data sheets, MSDS’s?

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