CCC Welding & Metalworking Techniques 1

Question 1

Which welding process is most commonly used for MIG (GMAW) welding in collision repair shops?

Accepted Answer

Gas Metal Arc Welding (GMAW)

Answer

Shielded Metal Arc Welding (SMAW)

Answer

Tungsten Inert Gas (TIG) welding

Answer

Flux-Cored Arc Welding (FCAW)

Question 2

What shielding gas mixture is most commonly recommended for MIG welding mild steel in automotive collision repair?

Accepted Answer

75% Argon / 25% CO2

Answer

100% Argon

Answer

100% CO2

Answer

50% Argon / 50% Helium

Question 3

When sectioning a pillar or rocker panel, where should the weld seam be placed according to best collision repair practices?

Accepted Answer

At least 2 inches from any factory seam or joint

Answer

At the point of greatest damage

Answer

At the factory seam location

Answer

In the center of the replacement panel

Question 4

Which type of weld is primarily used to join two overlapping panels in collision repair?

Accepted Answer

Lap weld

Answer

Butt weld

Answer

T-joint weld

Answer

Edge weld

Question 5

What is the purpose of a stitch weld (skip weld) technique when welding automotive sheet metal?

Accepted Answer

To reduce heat buildup and panel warpage

Answer

To increase penetration depth

Answer

To create a stronger continuous bead

Answer

To apply weld in a single pass

Question 6

When replacing a factory spot weld, which method is preferred to replicate the original bond in collision repair?

Accepted Answer

Resistance spot weld or plug weld

Answer

Plug weld using a MIG welder

Answer

TIG spot weld

Answer

Flux-cored tack weld

Question 7

What wire diameter is most commonly used for welding thin automotive body panels (18–20 gauge) in collision repair?

Accepted Answer

0.023 inch (0.6 mm)

Answer

0.035 inch (0.9 mm)

Answer

0.030 inch (0.8 mm)

Answer

0.045 inch (1.2 mm)