FREE Millwright Welding and Cutting Processes Questions and Answers

Question 1

Which welding process uses a non-consumable tungsten electrode and a separate filler metal?

Accepted Answer

Gas Tungsten Arc Welding (GTAW)

Answer

Shielded Metal Arc Welding (SMAW)

Answer

Gas Metal Arc Welding (GMAW)

Answer

Flux-Cored Arc Welding (FCAW)

Question 2

Which thermal cutting process is most suitable for cutting non-ferrous metals like aluminum and stainless steel?

Accepted Answer

Plasma arc cutting

Answer

Oxy-fuel cutting

Answer

Air carbon arc gouging

Answer

Laser cutting

Question 3

A weld bead exhibits a groove melted into the base metal adjacent to the weld toe that is not filled by weld metal. What is this defect called?

Accepted Answer

Undercut

Answer

Porosity

Answer

Overlap

Answer

Slag inclusion

Question 4

When setting up an oxy-acetylene torch, what is the maximum safe working pressure for acetylene?

Accepted Answer

15 psi

Answer

5 psi

Answer

30 psi

Answer

50 psi

Question 5

In Shielded Metal Arc Welding (SMAW), what is the primary function of the flux coating on the electrode?

Accepted Answer

To provide a shielding gas, deoxidizers, and a slag covering

Answer

To increase the electrical conductivity of the electrode

Answer

To cool the base metal during welding

Answer

To add carbon to the weld metal for hardness

Question 6

Before welding two pieces of thick carbon steel plate with a full penetration groove weld, what is the most critical preparation step?

Accepted Answer

Preheating the material

Answer

Polishing the surface to a mirror finish

Answer

Applying a rust-inhibiting primer

Answer

Cooling the plates with water