Other Skilled Trades Welding

Question 1

What does the acronym MIG stand for in MIG welding?

Accepted Answer

Metal Inert Gas

Answer

Manual Inert Grounding

Answer

Metal Integrated Groove

Answer

Mechanical Induction Gas

Question 2

Which welding position is considered the most difficult to perform?

Accepted Answer

4G (Overhead)

Answer

1G (Flat)

Answer

2G (Horizontal)

Answer

3G (Vertical)

Question 3

What shielding gas is most commonly used for MIG welding mild steel in the US?

Accepted Answer

75% Argon / 25% CO2

Answer

100% Argon

Answer

100% CO2

Answer

50% Argon / 50% Helium

Question 4

What is the purpose of preheating steel before welding?

Accepted Answer

To reduce the risk of cracking and residual stress

Answer

To clean the base metal

Answer

To increase travel speed

Answer

To eliminate the need for shielding gas

Question 5

In AWS welding certification, what does the 'D1.1' designation refer to?

Accepted Answer

Structural welding code for steel

Answer

Aluminum welding standard

Answer

Pipeline welding standard

Answer

Sheet metal welding code

Question 6

What type of joint is formed when two pieces of metal are welded end-to-end in the same plane?

Accepted Answer

Butt joint

Answer

Lap joint

Answer

T-joint

Answer

Corner joint