Welding Quiz
Questions: 16 · 10 minutes
1. Which joint arrangement most commonly receives a fillet weld?
Two members meeting at roughly a right angle, as in a T-joint or lap joint
Two plate edges aligned in the same plane for a butt joint
Two round bars placed end to end along one axis
Two plate edges separated for an open square-groove joint
2. Which combination best protects a welder’s eyes and face from arc radiation and flying particles during arc welding?
Clear safety glasses without a welding helmet
A welding helmet with the proper filter shade, worn with suitable safety glasses
A face shield with an unshaded clear lens
Dark-tinted everyday sunglasses with side shields
3. What distinguishes the electrode used in gas tungsten arc welding from the wire used in gas metal arc welding?
It is made only from the same metal as the workpiece
It provides a solid flux coating around the arc
It is a nonconsumable tungsten electrode under normal operation
It melts continuously to provide all filler metal
4. A job involves welding galvanized steel, which can release hazardous fumes when heated. What is the best approach?
Use a darker helmet lens because it filters metal fumes
Hold your breath during each short weld
Raise shielding-gas flow until it pushes all fumes across the room
Follow the approved procedure, including ventilation or fume extraction and coating controls where appropriate
5. A welder notices cracked insulation and exposed conductor on an electrode holder cable. What is the appropriate response?
Remove the equipment from service and have it repaired or replaced through the proper process
Wrap a glove around the damaged section while welding
Lower the shielding-gas flow to reduce electrical demand
Continue only on short welds so the cable remains cool
6. Which inspection method is destructive because the test specimen is physically deformed to assess weld soundness and ductility?
Visual inspection
Guided bend testing
Ultrasonic testing
Dye-penetrant testing
7. Which welding process normally uses a continuously fed consumable wire electrode and an externally supplied shielding gas?
Shielded metal arc welding, or SMAW
Gas metal arc welding, or GMAW
Gas tungsten arc welding, or GTAW
Oxyfuel welding
8. What is the main purpose of tack welds during assembly?
To replace the completed weld in every application
To hold components in alignment and position before final welding
To test shielding gas without joining the parts
To remove distortion after the final weld cools
9. The arc is unstable, and the work clamp is attached over heavy rust and paint. What is the best first check?
Reconnect the clamp at a clean, secure, electrically conductive location
Add lubricant to the electrode or wire
Move the shielding-gas cylinder closer to the joint
Replace the welding helmet filter lens
10. A gas metal arc welding setup produces sound welds indoors, but porosity appears when the same work is moved into a windy doorway. What is the most likely cause?
The work clamp is positioned too close to the joint
The electrode wire is becoming nonconsumable
Air movement is disrupting the shielding-gas coverage
The joint has changed from a groove weld to a fillet weld
11. Inspection shows a narrow groove melted into the base metal along the edge of a weld and left unfilled. What discontinuity is this?
Porosity
Slag inclusion
Overlap
Undercut
12. During workshop preparation, sparks could reach cardboard boxes beside the welding area. What should happen before welding begins?
Wet only the top box and begin welding
Turn the boxes so their labels face away from the arc
Remove or properly protect the combustible material according to the hot-work procedure
Rely on welding gloves to extinguish any small fire
13. A weld bead is piling up and failing to fuse properly at the joint edges. Which adjustment should be considered first, while staying within the approved procedure?
Increase travel speed so less heat reaches the joint
Lengthen the arc as much as possible
Add more shielding gas regardless of the recommended flow range
Increase effective heat input, such as by slowing travel or using an approved higher setting
14. How should a compressed-gas cylinder normally be moved within a welding shop?
Rolled horizontally along its lower edge with the regulator installed
Carried by lifting it from the valve or regulator
Secured upright on a suitable cylinder cart, with the protective cap fitted when required
Dragged by its protective cap while tilted toward the operator
15. In oxyacetylene welding, what characterizes a neutral flame?
Oxygen and acetylene are adjusted to avoid a distinctly oxidizing or carburizing flame
A large excess of oxygen that creates a strongly oxidizing flame
No oxygen is supplied through the torch
A large excess of acetylene that creates a distinct feather
16. After completing one pass with a slag-producing process, what should be done before depositing the next pass?
Cover the slag with anti-spatter compound
Cool the joint by immersing it in water
Increase electrode length to remelt the trapped slag
Remove the slag and inspect the pass as required