MMAW NC I study guide
MMAW NC I · Work through your exam, one topic at a time.
The MMAW NC I (Manual Metal Arc Welding, Non-Certified Level I) is an entry-level knowledge assessment for people who want to demonstrate foundational understanding of manual metal arc welding and related processes before or alongside practical training. It is aimed at trainees, pre-apprentices, workshop assistants, and career changers who need a structured, theory-based benchmark rather than a trade certification. The MMAW NC I study guide has 9 sections and about 2,661 words.
01Welding Safety, Health, and Environment
This domain tests how you recognise welding hazards and apply controls that meet workplace safety, health and environmental requirements. Questions often combine PPE, fume, fire, electricity and confined-space controls, so link each control to the hazard it addresses.
314 words, about 2 min02Welding Theory, Metallurgy, and Heat Input
This domain tests welding theory, metallurgy and heat input: how arc energy affects penetration, cooling rate, microstructure and cracking risk. Expect calculation items plus questions on the heat-affected zone (HAZ) and preheat.
310 words, about 2 min03SMAW (Shielded Metal Arc Welding) Fundamentals
This domain tests SMAW (MMAW) fundamentals: electrode classification, current and polarity, arc length, electrode angle, slag control and electrode storage. The exam expects you to match an electrode and technique to the joint and code requirement.
295 words, about 1 min04GMAW (Gas Metal Arc Welding) Fundamentals
This domain tests GMAW fundamentals: wire feed, polarity, shielding gas, transfer mode, contact-tip-to-work distance (CTWD), inductance and troubleshooting. Expect questions that ask why a mode or gas is chosen for a thickness and position.
282 words, about 1 min05FCAW (Flux-Cored Arc Welding) Fundamentals
This domain tests FCAW fundamentals: flux-cored wire design, gas-shielded versus self-shielded operation, polarity, slag, deposition and outdoor use. The exam often asks you to select the right variant and explain its limitations.
260 words, about 1 min06GTAW (Gas Tungsten Arc Welding) Fundamentals
This domain tests GTAW fundamentals: polarity, tungsten selection, shielding gas, arc starting, filler addition and contamination control. Questions often compare DCEN, DCEP and AC for different metals.
287 words, about 1 min07Oxy-Fuel Cutting and Related Processes
This domain tests oxy-fuel cutting and related processes: flame adjustment, cutting technique, kerf and drag, and the safe use of oxygen and fuel gases. Expect questions on neutral, oxidising and carburising flames and on flashback protection.
305 words, about 2 min08Joint Preparation, Fit-Up, and Welding Symbols
This domain tests joint preparation, fit-up and welding symbols: joint types, groove geometry, root gap and land, tacking, alignment, and reading a symbol on a drawing. The exam expects you to translate a symbol into the actual weld.
326 words, about 2 min09Weld Inspection, Discontinuities, and Quality Control
This domain tests weld inspection, discontinuities and quality control: visual inspection, NDT methods, common defects and acceptance decisions. The exam expects you to identify a discontinuity and choose a suitable inspection method.
282 words, about 1 min