Which GMAW transfer modes are the two main modes used in Level 2 practice?

• A. Short-circuit transfer
• B. Short-circuit transfer and spray/pulsed-spray transfer
• C. Spray transfer only
• D. Pulsed-spray transfer only

Answer: (B)

The main idea here is understanding which wire-to-weld transfer modes are taught and practiced at Level 2 in GMAW. Short-circuit transfer is the mode that runs at lower voltage and current, where the wire tip momentarily touches the puddle and droplets form through rapid short circuits. This mode gives good control and low heat input, making it ideal for thin materials and for welding in all positions during Level 2 practice.

Spray transfer (and its pulsed-spray variant) uses higher current and voltage to create a continuous spray of small droplets across the arc. It delivers higher deposition rates and a smooth bead, but it requires appropriate shielding gas and is less forgiving on very thin material. Pulsed-spray combines the fast deposition of spray with pulse control of heat input, allowing better control in thinner sections or more complex joints.

Because Level 2 training aims to build versatility across different materials and joint configurations, both short-circuit transfer and the spray family (spray or pulsed-spray) are the two main modes practiced.