Step2Study

AWS Certified Welding Inspector — Fundamentals practice questions

209 free questions with answers and explanations.

Practice test
  1. 51.A CWI is preparing to perform a visual inspection (VT) on a newly welded pressure vessel. According to common welding codes and standards, which of the following tools is essential for assessing the size of fillet welds?Nondestructive Examination (NDE)
  2. 52.A CWI is evaluating the results of an Ultrasonic Testing (UT) inspection performed on a complex geometry component. The technician used a phased array UT system. What is a significant advantage of phased array UT over conventional single-element UT for this application?Nondestructive Examination (NDE)
  3. 53.A welder is setting up for a gas metal arc welding (GMAW) operation. The welding machine is powered by 480V three-phase electricity. Before connecting the power, the welder should ensure the machine's power cord is equipped with which of the following?Safety
  4. 54.A welding inspector is reviewing a blueprint that specifies a nondestructive examination (NDE) for a critical butt joint. The NDE symbol for Radiographic Testing (RT) is placed on the reference line, centered above the weld symbol. If the weld symbol is for a double-bevel groove weld, what does the placement of the RT symbol indicate?Welding Symbols
  5. 55.A welding inspector encounters a blueprint with a welding symbol for a flare-bevel-groove weld. The symbol is placed on the arrow side of the reference line. What is the typical characteristic of the members being joined in this type of weld?Welding Symbols
  6. 56.A welding inspector is observing a welder preparing to cut a section of pipe that previously contained flammable liquids. Despite the pipe being drained, the inspector insists on additional safety measures before hot work begins. Which of the following is the most appropriate additional safety measure?Safety
  7. 57.A technician is performing an eddy current testing (ET) inspection on an aerospace component for surface cracks. The probe is a surface coil operating at a specific frequency. What fundamental principle governs the interaction between the eddy current probe and the conductive material to detect discontinuities?Nondestructive Examination (NDE)
  8. 58.A CWI is performing an ultrasonic testing (UT) inspection on a butt weld in a 0.75-inch thick steel plate using an angle beam transducer. The transducer is operating at a frequency of 2.25 MHz, and the material's longitudinal wave velocity is 0.230 in/µs. What is the approximate wavelength of the shear wave in this steel, assuming the shear wave velocity is approximately half of the longitudinal wave velocity?Nondestructive Examination (NDE)
  9. 59.A welding inspector is reviewing a drawing for a T-joint. The welding symbol specifies a single-bevel groove weld. The symbol for the groove weld is placed on the arrow side of the reference line. What is the correct interpretation of the preparation of the joint for this weld?Welding Symbols
  10. 60.A welding inspector notices a welder operating an arc welding machine with a frayed and exposed power cord. The ground fault circuit interrupter (GFCI) for the circuit is known to be non-functional. What is the MOST immediate and severe electrical hazard presented by this situation?Safety
  11. 61.A blueprint shows a welding symbol for a single-bevel groove weld. The symbol is placed on the arrow side of the reference line. What does this indicate about the preparation of the joint?Welding Symbols
  12. 62.A CWI is reviewing a Liquid Penetrant Testing (PT) procedure for inspecting a stainless steel component that will be exposed to high temperatures. The procedure specifies a post-emulsifiable penetrant system. What is the primary reason for choosing this type of penetrant system over a water-washable system for this application?Nondestructive Examination (NDE)
  13. 63.A welding drawing specifies a radiographic test (RT) for a butt joint. The NDE symbol indicates RT directly on the reference line, with the RT symbol above the reference line. What does this placement imply about the inspection coverage?Welding Symbols
  14. 64.A CWI is evaluating a design for a sheet metal fabrication. The welding symbol indicates a spot weld with the diameter specified as 'ø10'. What does this dimension represent?Welding Symbols
  15. 65.A welding inspector is overseeing a Flux-Cored Arc Welding (FCAW) operation on galvanized steel in a poorly ventilated outdoor area. The welder complains of dizziness and nausea. What is the most likely cause of these symptoms?Safety
  16. 66.A CWI is performing a Magnetic Particle Testing (MT) inspection on a large ferritic steel casting using the wet fluorescent method. The CWI notices that the magnetic particle indications appear fuzzy and spread out, making it difficult to clearly define the discontinuities. What is the most likely cause of this issue?Nondestructive Examination (NDE)
  17. 67.A CWI is overseeing a Radiographic Testing (RT) inspection of a stainless steel pipe weld. The radiographer is using an Ir-192 source. The specified source-to-film distance (SFD) is 30 inches (76.2 cm) and the part thickness is 1 inch (2.54 cm). What is the geometric unsharpness (Ug) if the effective focal spot size of the source is 0.15 inches (0.38 cm)?Nondestructive Examination (NDE)
  18. 68.A CWI encounters a welding symbol that includes an intermittent fillet weld. The symbol indicates '6 @ 100' to the right of the fillet weld symbol, with a leg size of 8mm. What does the '6 @ 100' represent for this intermittent weld?Welding Symbols
  19. 69.A CWI is inspecting a pressure vessel drawing. The welding symbol for a critical joint includes a circle at the junction of the reference line and the arrow. What does this supplementary symbol indicate regarding the weld location?Welding Symbols
  20. 70.A welding drawing specifies a weld symbol with a square wave contour symbol. This symbol indicates that the weld face should have a specific contour. Which of the following best describes the required contour for the weld face?Welding Symbols
  21. 71.A complex welding symbol includes a supplementary symbol in the tail indicating 'WPQ'. What does 'WPQ' typically refer to in the context of welding documentation?Welding Symbols
  22. 72.A CWI is performing an inspection of a weld using the dry powder Magnetic Particle Testing (MT) method. Which of the following is a key advantage of using dry powder over wet fluorescent particles for certain applications?Nondestructive Examination (NDE)
  23. 73.During a welding operation, a welder accidentally touches the bare electrode to a grounded metal workbench while wearing dry leather gloves. Which of the following is the MOST likely outcome?Safety
  24. 74.A welding drawing specifies a backing bar for a groove weld. Which supplementary symbol would be used to indicate that the backing bar should be removed after welding?Welding Symbols
  25. 75.A CWI is reviewing a blueprint for a pressure vessel. The welding symbol for a critical seam includes a groove weld symbol. Immediately to the right of the groove weld symbol, there is a number '45'. What does this number most likely represent in the context of a groove weld?Welding Symbols
  26. 76.A CWI is examining a blueprint for a pipe joint. The welding symbol indicates a single-V groove weld. Below the reference line, the groove weld symbol is shown with a dimension '30°' at the top opening. Below this, there is a '3' and then '5'. What does the '5' below the '3' signify for this groove weld?Welding Symbols
  27. 77.A CWI is reviewing an Ultrasonic Testing (UT) procedure for inspecting a butt weld in a 1-inch thick carbon steel plate. The procedure specifies the use of a 70-degree shear wave transducer. During calibration, the CWI observes that the amplitude of the reflected signal from a known reference reflector is significantly lower than expected. Which of the following is the most likely cause for this reduction in signal amplitude?Nondestructive Examination (NDE)
  28. 78.A CWI is performing Magnetic Particle Testing (MT) on a large, complex gearbox casing using the yoke method. To ensure adequate detection of various orientations of discontinuities, what is the MOST appropriate technique for magnetizing the component?Nondestructive Examination (NDE)
  29. 79.A CWI is evaluating a Magnetic Particle Testing (MT) indication on a ferromagnetic weld. The indication appears as a broad, fuzzy, and indistinct line that does not follow any specific weld feature or heat-affected zone boundary. What is the MOST likely cause of this type of indication?Nondestructive Examination (NDE)
  30. 80.A CWI is setting up a Magnetic Particle Testing (MT) inspection using the wet fluorescent particle method. Which of the following is a critical step to ensure proper particle concentration and dispersion?Nondestructive Examination (NDE)
  31. 81.A welding inspector is reviewing a blueprint for a flare-V groove weld on a pipe. The welding symbol has a flare-V groove symbol on the arrow side of the reference line. There is a number '6' to the left of the flare-V symbol. What does this '6' most likely represent?Welding Symbols
  32. 82.A CWI is conducting a visual inspection of a plate edge prepared for welding. The edge exhibits small, shallow, irregularly shaped indentations or gouges that appear to be caused by mechanical abrasion, rather than intentional machining. This condition is best described as:Nondestructive Examination (NDE)
  33. 83.A CWI is reviewing a blueprint for a joint requiring a backing strip that must be removed after welding. Which of the following supplementary symbols would be used to specifically indicate the removal of the backing strip?Welding Symbols
  34. 84.A CWI is evaluating a radiographic film that shows several small, rounded indications randomly distributed throughout the weld bead. These indications are darker than the surrounding weld metal. What type of discontinuity do these most likely represent?Nondestructive Examination (NDE)
  35. 85.A welding inspector is observing a maintenance operation where a welder needs to replace a heating element in a large industrial oven. To prevent accidental energization, the inspector verifies that the electrical breaker is locked out and tagged out. What is the primary purpose of the 'tag out' component of Lockout/Tagout (LOTO)?Safety
  36. 86.A welding inspector is overseeing a maintenance task where a welder needs to work on a large, stationary piece of equipment that is electrically powered. To prevent accidental startup during welding, what is the MOST appropriate safety procedure that must be implemented?Safety
  37. 87.A welding inspector is reviewing a welding procedure specification (WPS) for a structural steel project. The WPS indicates the use of a flux-cored arc welding (FCAW) process. What type of Personal Protective Equipment (PPE) is MOST critical for protecting the welder's respiratory system from the fumes generated by this process?Safety
  38. 88.A welding inspector is observing a shielded metal arc welding (SMAW) operation in a confined space. The welder collapses due to an unknown atmospheric hazard. Which of the following is the MOST immediate and critical action the inspector should take?Safety
  39. 89.A CWI is overseeing a visual inspection (VT) of a newly fabricated structural steel beam. The inspector notes that the weld reinforcement on a groove weld exceeds the maximum allowable height specified in the welding procedure specification (WPS). This condition is categorized as:Nondestructive Examination (NDE)
  40. 90.A CWI is reviewing a blueprint for a complex fabrication. The welding symbol includes a supplementary symbol in the tail that reads 'PJP'. What specific information does 'PJP' convey regarding the groove weld?Welding Symbols
  41. 91.A welding symbol indicates a fillet weld with a leg size of 6 mm. Below the fillet weld symbol, the number '50' is placed. What does '50' signify in this context?Welding Symbols
  42. 92.A welding blueprint indicates a fillet weld on both sides of a joint, with one side having a different leg size than the other. Which basic welding symbol element would convey this information?Welding Symbols
  43. 93.A welding inspector is reviewing the fire prevention plan for a fabrication shop. The plan states that fire extinguishers should be located within 50 feet of any welding operation. According to common welding safety standards (e.g., ANSI Z49.1), what is the MINIMUM acceptable distance for a suitable fire extinguisher from hot work operations?Safety
  44. 94.A welding inspector arrives at a job site and observes welders working without proper eye protection. The welders claim they are only performing tack welds and don't need full helmets. What is the MOST immediate and significant risk they are exposed to?Safety
  45. 95.A welding inspector is reviewing the fire prevention plan for a multi-story building construction site. Welding operations are planned for the fifth floor. According to best practices for fire prevention, what is the minimum distance a fire watch should maintain from the hot work operation?Safety
  46. 96.A welding inspector reviews a drawing that specifies a weld requiring a flush contour. Which supplementary symbol is used to indicate that the weld face should be flush with the base metal?Welding Symbols
  47. 97.A CWI is inspecting a critical pressure vessel weld using the liquid penetrant testing (PT) method. After applying the penetrant and allowing the required dwell time, the CWI removes the excess penetrant using a water washable remover. Which of the following is the MOST critical next step to ensure accurate defect detection?Nondestructive Examination (NDE)
  48. 98.A CWI is reviewing an Ultrasonic Testing (UT) procedure that specifies the use of a dual-element transducer for inspecting a thin-walled steel pipe for pitting corrosion from the outer surface. What is the primary advantage of using a dual-element transducer over a single-element transducer for this specific application?Nondestructive Examination (NDE)
  49. 99.A welding technician is interpreting a blueprint for a bridge component. The welding symbol includes a supplementary symbol in the tail, which is the letters 'PWHT'. What does this indicate to the welder?Welding Symbols
  50. 100.A CWI is reviewing a radiographic film for a 0.5-inch thick aluminum weld. The film shows a dark, distinct, and elongated indication with irregular edges, located entirely within the weld bead. This indication is oriented randomly, not consistently parallel or perpendicular to the weld axis. What type of discontinuity does this MOST likely represent?Nondestructive Examination (NDE)