How many questions does a typical entrance exam at welding trade schools actually cover, and what topics get tested most? Most screening exams run 40 to 50 multiple-choice items pulled from safety protocol, process theory, and symbol reading, and a missed passing score often means a delayed start date or a required remedial course before shop time begins.
This free practice test on gowelding.org runs 42 questions across five core topics: safety, the four major arc welding processes, electrodes and gases, symbol interpretation, and positions with joint defects.
Questions align with AWS SENSE and NCCER knowledge areas, and the full set is formatted for printing or offline PDF study, since not every welder has reliable shop-floor internet access during prep.
Current Welding Codes & Standards Referenced in This Test
Welding codes and standards give exams a consistent technical foundation, so many test questions ask which document controls a symbol, safety practice, or qualification rule. This table lists the standards referenced in this practice test, including the edition years verified during research in September 2026. When you review a missed question, check the current source edition listed here.
| Standard | Title | Edition Year | Key Clauses/Area |
|---|---|---|---|
| AWS A2.4:2020 | Standard Symbols for Welding, Brazing, and Nondestructive Examination | 2020 | System for indicating welding, brazing, and nondestructive-examination requirements; revised coverage includes flare-groove welds, plug and slot weld dimensions, contour symbols, spot and seam weld designations, and flash and upset welding symbols. |
| ANSI Z49.1:2021 | Safety in Welding, Cutting, and Allied Processes | 2021 | All aspects of safety and health in the welding environment, with emphasis on oxygen-gas and arc-welding processes and additional coverage of resistance welding, high-energy-beam welding, brazing, and soldering. |
| OSHA 29 CFR 1910.252 | General requirements | N/A | General welding requirements for workplaces; verify current Code of Federal Regulations text for subsection-level requirements. |
| ASME BPVC Section IX:2025 | Welding, Brazing, and Fusing Qualifications | 2025 | Welding and brazing procedure and personnel qualification; 2025 changes identify brazing-personnel qualification for other base metals in accordance with Table QB-421. |
| AWS D1.1/D1.1M:2025-AMD1 | Structural Welding Code - Steel | 2025, with Amendment 1 dated January 12, 2026 | Requirements for welding structural steel, including procedure qualification, welder qualification, fabrication, inspection, and acceptance criteria. |
Which Arc Welding Process Fits Your Work?
Arc welding processes differ by how the electrode is consumed, how the weld is shielded, and the transfer mode used. This scorecard groups the two continuous-wire processes (GMAW and FCAW) because they share a wire-feed design, but FCAW can be self-shielded or gas-shielded. Use the chart to match process capabilities to your training or job site.
Welding Safety & Health Practices
Welding safety starts before the arc is struck. Standard PPE includes a shaded welding helmet, safety glasses, dry leather gloves, a flame-resistant jacket or sleeves, leather boots, and hearing protection when grinding or using an air carbon arc gouge. Keep the work area clear of combustible materials within 35 ft, and use a fire watch when cutting or welding near flammable surfaces. Cylinders must be secured upright, capped when not in use, and kept away from heat and electrical circuits. Before welding in a new location, inspect for confined-space hazards, nearby flammable vapors, and adequate ventilation.
Electrical shock is one of the most tested topics on the written exam. Inspect electrode holders and cables for damaged insulation before each use, keep cables dry, and never change electrodes with wet gloves or while standing in water. For wire-feed equipment, the same baseline applies, but MIG welding safety precautions add a focus on contact-tip-to-work distance, drive-roll pinch points, and proper gun angle. Always use the correct polarity and avoid wrapping cables around your body.
Fume and gas hazards depend on base metal, filler metal, and coating. Position the work so your head is out of the plume, use local exhaust or natural cross-ventilation, and wear an approved respirator when ventilation cannot keep exposure below the limit. Many safety quizzes ask about zinc oxide from galvanized steel, cadmium from some brazing alloys, and shielding gases such as argon and carbon dioxide displacing oxygen in low spots.
Radiation from the arc can burn skin and eyes. A simple set of welder safety tips covers choosing the correct shade, using full-face protection, and protecting nearby workers with screens or barriers. Arc eye may not appear for several hours after exposure.
Finally, housekeeping and hot-work rules matter. Keep aisles clear, coil hoses and cables without kinks, and report damaged leads. Because these rules recur in school entrance tests and Welder Certifications written exams, review each safety topic with the same weight as welding process questions.
Welding Processes: SMAW, GMAW, FCAW, GTAW
Process selection among Welding Processes is the single most tested concept on any welding entrance or certification screening exam, because choosing the wrong process for a joint, material, or environment causes more real-world failures than bad technique does. The ten questions below mirror how shops and instructors actually quiz candidates: by scenario, not by definition. For a visual refresher on each process before you start, use the process buttons in the infographic above.
Process Fundamentals (Q1-3)
1. Which process uses a flux-coated consumable electrode and no external shielding gas? Answer: SMAW. The flux coating decomposes to shield the arc, which is why stick welding works outdoors in wind.
2. Which process is best suited for thin-gauge stainless sheet requiring a clean, precise bead? Answer: GTAW. Its separate filler rod and non-consumable tungsten electrode give the tightest heat control.
3. Which process uses a tubular wire filled with flux and is popular for structural steel in the field? Answer: FCAW. Self-shielded FCAW tolerates wind and dirtier base metal better than GMAW.
Polarity & Gas Selection (Q4-6)
4. Standard stick welding with most electrodes runs on which polarity? Answer: DCEP (reverse polarity), which concentrates heat at the electrode tip for better penetration.
5. GTAW on aluminum typically requires which current type? Answer: AC. Alternating current provides the cleaning action needed to break up aluminum's oxide layer.
6. A 75/25 argon-CO2 blend is most associated with which process? Answer: GMAW (MIG welding). It balances arc stability with acceptable penetration for carbon steel.
Transfer Modes & Scenarios (Q7-10)
7. Which GMAW transfer mode uses short-circuiting and low heat, ideal for thin sheet metal? Answer: Short-circuit transfer.
8. Which transfer mode produces a fine, spatter-free spray but requires higher voltage and amperage? Answer: Spray transfer.
9. A pipefitter needs a root pass on carbon steel pipe in an out-of-position joint with no shielding gas available on-site. Which process fits? Answer: SMAW, because it needs no external gas and handles all positions.
10. A production shop welding thin auto-body panels needs speed and minimal cleanup. Which process fits? Answer: GMAW, for its high deposition rate and clean shielding when gas is available.
Score yourself against these ten before moving to symbols and joint defects next.
Electrodes, Gases & Consumables
Consumable knowledge separates the fabricator who reads a spec sheet from one who guesses. These eight questions test the AWS electrode classification system, filler metal matching, and shielding gas selection for MIG welding. Read the explanations closely: the numbering codes are logical once you learn what each digit means.
Electrode Classification Questions
1. In the electrode classification E6010, what does the "60" represent? Answer: 60,000 psi minimum tensile strength. In the E-XXXX system, the first two (or three) digits give tensile strength in thousands of psi.
2. What does the "1" in E6010 indicate? Answer: All-position capability. The third digit signals welding positions; "1" means flat, horizontal, vertical, and overhead.
3. In E7018, the final digit "8" tells you the electrode is: Answer: Low-hydrogen with iron powder, running on AC or DCEP. The last digit combines coating type and current. E7018 is the workhorse low-hydrogen rod for structural steel.
4. What does the "ER" prefix mean in ER70S-6? Answer: Electrode or Rod (a bare filler used in GMAW or GTAW, see MIG Welding Electrodes). The "70" again means 70,000 psi tensile strength; "S" means solid wire; "6" indicates deoxidizer content.
Filler Metal & Gas Selection
5. Why is ER70S-6 popular for GMAW on mild steel with mill scale? Answer: Its higher silicon and manganese content tolerates dirtier surfaces and produces good wetting.
6. Which shielding gas mix is most common for short-circuit GMAW on carbon steel? Answer: 75% argon / 25% CO2. This common MIG Welding Gases mix balances arc stability, low spatter, and penetration.
7. What shielding gas is used for GTAW on aluminum? Answer: 100% argon. Pure argon provides a clean, stable arc; helium is sometimes added for deeper penetration on thick sections.
8. Scenario: You must weld 6061-T6 aluminum plate with GTAW. Which filler and current suit the job? Answer: ER4043 (or ER5356) filler with AC current. AC provides the cathodic cleaning that removes aluminum's oxide layer, and 4043 offers good crack resistance on 6061.
Scoring This Set
Give yourself one point per correct answer. Six or more shows solid consumable fundamentals. If you missed the classification digit questions, review the AWS A5 filler metal specifications before moving to the symbols section, where reading a spec on a blueprint becomes the next skill.
How This Practice Test Maps to AWS SENSE and NCCER
This table maps the main sections of this welding practice test to AWS SENSE Level I knowledge areas and NCCER Welding Level 1 and Level 2 modules. Modules without a matching practice test section are omitted. Coverage notes reflect published module requirements or minimum written test scores where stated in the source materials.
| Certification/Program | Knowledge Area/Module | Practice Test Section | Typical Coverage |
|---|---|---|---|
| AWS SENSE Level I | Module 2: Safety and Health of Welders | Safety and health | Written test score 100% minimum. |
| AWS SENSE Level I | Module 3: Drawing and Welding Symbol Interpretation | Drawing and welding symbol interpretation | Written test score 75% minimum. |
| AWS SENSE Level I | Module 4: Shielded Metal Arc Welding (SMAW) | Shielded metal arc welding | Written test score 75% minimum; visual inspection passed; destructive test passed. |
| AWS SENSE Level I | Module 5: Gas Metal Arc Welding (GMAW, GMAW-S) | Gas metal arc welding | Written test score 75% minimum; visual inspection passed. |
| AWS SENSE Level I | Module 6: Flux Cored Arc Welding (FCAW-G/GM, FCAW-S) | Flux cored arc welding | Written test score 75% minimum; visual inspection passed. |
| AWS SENSE Level I | Module 7: Gas Tungsten Arc Welding (GTAW) | Gas tungsten arc welding | Written test score 75% minimum; visual inspection passed. |
| NCCER Welding Level 1 | Module 29101: Welding Safety | Welding safety | Safety equipment, protective clothing, and procedures applicable to cutting and welding metals. |
| NCCER Welding Level 1 | Modules 29107 through 29112: SMAW Equipment and Setup; Electrodes; Beads and Fillet Welds; Joint Fit-Up and Alignment; Groove Welds with Backing; Open-Root Groove Welds on Plate | SMAW equipment and setup; electrodes; beads and fillet welds; joint fit-up and alignment; groove welds with backing; open-root groove welds on plate | Covers SMAW equipment and setup, electrodes, beads and fillet welds, joint fit-up and alignment, groove welds with backing, and open-root groove welds on plate. |
| NCCER Welding Level 1 | Module 29105: Base Metal Preparation; Module 29106: Weld Quality | Base metal preparation and weld quality | Covers base metal preparation and weld quality. |
| NCCER Welding Level 2 | Module 29201: Welding Symbols; Module 29202: Reading Welding Detail Drawings | Welding symbols; detail drawings | Covers welding symbols and reading welding detail drawings. |
| NCCER Welding Level 2 | Modules 29205 and 29207 through 29210: GMAW and FCAW Equipment and Filler Metals; GTAW Equipment and Filler Metals; GTAW Plate; GMAW Plate; FCAW Plate | GMAW/FCAW equipment and filler metals; GTAW equipment and filler metals; GTAW, GMAW, and FCAW plate welding | Covers GMAW and FCAW equipment and filler metals, GTAW equipment and filler metals, and GTAW, GMAW, and FCAW plate welding. |
Welding Symbols & Blueprint Reading
Interpreting symbols correctly is a non-negotiable certification skill. The questions below follow current AWS A2.4 conventions, CWI Part B documentation logic, and blueprint reading for fitters. AWS A2.4 uses the reference line as the dividing line between arrow side and other side.1
Symbol Interpretation
1. A symbol shows a 1/4 in fillet on the arrow side and a circle at the junction. What does the circle mean? (Weld all around / field weld / melt-through) Answer: weld all around. Explanation: The circle requires welding around the entire joint, not just the indicated sides.3
2. A V-groove symbol has "3/8" left, "2" right, and "(6)" in parentheses. These are: (size, length, pitch / pitch, size, length / length, pitch, size) Answer: size, length, pitch. Explanation: AWS A2.4 places size left, length right, and pitch in parentheses for intermittent welds per the Examination User Guide for Certified Welding Inspector.
3. A symbol includes a flag at the junction and tail text "GMAW WPS 12." What does the flag require? (Field weld / shop weld / weld all around) Answer: field weld. Explanation: The flag means the weld is made in the field.4 The tail gives process and procedure details.4
4. A rectangle on the reference line points to a round hole in the base plate. What weld type is specified? (Plug / slot / spot / seam) Answer: plug weld. Explanation: A rectangle indicates plug or slot. A round hole makes this a plug weld; a slot weld would show an elongated opening.4
Defect and Documentation
5. A photo shows spherical gas pockets on the weld face. The discontinuity is: (porosity / slag inclusion / undercut / overlap) Answer: porosity. Explanation: Porosity comes from trapped gas, contamination, moisture, or poor shielding.2 It becomes a defect only if it exceeds acceptance criteria.1
6. A photo shows a groove weld toe with a notch melted into the base metal, deeper than code allows. This is: (undercut / overlap / incomplete fusion / underfill) Answer: undercut. Explanation: Undercut stems from excessive current, long arc length, or wrong electrode or torch angle.2 Shallow undercut may pass; deep undercut fails.
7. A PQR lists preheat 250°F; the WPS lists 100°F. Which is correct? (WPS is allowed / WPS must be revised / PQR is irrelevant) Answer: WPS must be revised. Explanation: PQR records the qualified test conditions; WPS must stay within those qualified ranges.2 Lower preheat is beyond the qualified range.
8. Where is arrow-side weld information placed relative to the reference line? Answer: below the line. Explanation: AWS A2.4 places arrow side below and other side above the reference line.1
Welding Positions, Joint Types & Defects
Position and defect questions cause more missed points on welding entrance exams than any other topic, largely because candidates confuse a discontinuity (any interruption in the normal structure of a weld) with a defect (a discontinuity severe enough to fail code acceptance criteria). Not every discontinuity is a defect, and the explanations below flag the distinction.
Positions and Joint Configurations
1. What does the "G" in 1G, 3G, or 6G designate? Answer: Groove weld. Explanation: F suffixes (1F, 2F) denote fillet welds; G denotes groove welds tested on plate or pipe.
2. Which position is a 6G test performed in? Answer: Pipe fixed at a 45-degree angle. Explanation: 6G pipe welding qualifies welders for all positions simultaneously because the fixed incline forces flat, horizontal, vertical, and overhead technique in one continuous weld.
3. A butt joint connects two plates how? Answer: Edge to edge in the same plane. Explanation: Lap joints overlap, T-joints meet at 90 degrees, and corner joints meet at an outside edge; each requires different fit-up and access.
4. In 2G position, the pipe or plate is oriented: Answer: Vertical, with the weld run horizontally. Explanation: 1G is flat/rotated, 3G is vertical up or down, and 4G welding position is overhead.
Discontinuities and Defects
5. Porosity in a weld is caused primarily by: Answer: Trapped gas during solidification. Explanation: Contaminated shielding gas, moisture, or dirty base metal introduces gas pockets; scattered porosity may be acceptable, clustered porosity often is not.
6. Undercut appears as: Answer: A groove melted into the base metal at the toe of the weld, left unfilled. Explanation: Excess amperage or travel speed causes it; shallow undercut may pass inspection, deeper undercut becomes a rejectable defect.
7. Slag inclusion most commonly results from: Answer: Failure to remove slag between weld passes. Explanation: Common in stick welding and FCAW multi-pass welds, it becomes a defect only when it exceeds the acceptance limits of the governing code; minor porosity may pass within those limits.
8. What separates a discontinuity from a defect? Answer: Whether it exceeds the acceptance limits of the governing code. Explanation: Inspectors reference size, location, and frequency limits, not the mere presence of an imperfection, to make that call.
Scoring Guide: Are You Ready?
Related Articles
How to Use This Practice Test for Certification Prep
Certification requirements are shifting toward stricter documentation even as the core testing model stays split between theory and hands-on skill. Understanding that split is the first step to using this practice test correctly.
Written Knowledge vs Performance Testing
AWS Certified Welder is a performance-only credential. There are no prerequisite courses, no minimum experience requirement, and no written exam gatekeeping entry.1 Candidates qualify by passing a hands-on welder performance qualification test at an AWS Accredited Test Facility2, governed by the QC47 specification.1 Other AWS credentials layer in written components. The Certified Robotic Arc Welding program, for example, requires a closed-book written exam in addition to a practical performance test.3 NCCER welding credentials generally combine a written knowledge test with performance verification, though exact requirements vary by program.4
This practice test is built for the written-knowledge side of that equation: safety, terminology, process fundamentals, symbols, and code interpretation.5 A strong score here signals solid procedural understanding, but it correlates only loosely with hands-on readiness.5 Written tests measure what you know; performance tests measure whether you can lay down an acceptable weld under specific procedure conditions, often evaluated through Destructive Weld Testing. Treat this quiz as preparation for the classroom half of certification, not a substitute for stick time.
Turning Results Into a Study Plan
Once you've scored yourself using the topic groupings, look for patterns rather than a single number.
- Weak topic clusters: If you missed several questions in one section, such as electrode classifications or symbol reading, retake just that section after reviewing the explanations.
- Repeat misses: Questions you get wrong twice usually point to a genuine gap, not a lucky guess. Flag those for deeper review in an official handbook or code reference.
- Pair with practice: For written-theory credentials, study the official handbook, applicable code editions, and the exam's topic list.4 For AWS Certified Welder specifically, pair your written review with practice on the exact position, process, material, and electrode or wire called for by your test facility, for example, a 3G SMAW Certification, since that performance test is procedure-specific.1
- Sequence matters: If your target credential requires both written and practical components, cover written subjects first, then align your hands-on practice to the exact conditions of the performance test.3
Free, Printable, and Ready When You Are
This practice test is free to use and formatted to print or save as a PDF, so you can work through it away from a screen, mark up questions by hand, or bring a paper copy to a study group. If you're applying for AWS certification, note that applications now go through the My AWS Portal online rather than paper submission.6 Use this quiz as a diagnostic, not a finish line: it tells you where to focus your reading, but it cannot predict your performance on a procedure-specific weld test.