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CWB Welding Inspection Level II Exam New 2025
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Which of the following statements concerning porosity is true? a) Porosity cannot be trapped within a weld. b) Porosity moves up through later passes and will show only in a final pass. c) Porosity is restricted to the centre line of a weld. d) Porosity can result from faulty welder technique. e) Porosity can be dissipated by an appropriate heat treatment. ---------- Correct Answer ----------- -- d) Porosity can result from faulty welder technique. A crack perpendicular to the length of the weld is called a: a) Transverse crack. b) Longitudinal crack. c) Throat crack. d) Underbead crack. ---------- Correct Answer ------------- a) Transverse crack. Magnetic particles are attracted to indications because the: (Multiple Choice) A) defects create a crater to fill. B) particles naturally possess an opposite charge. C) indications are a location of flux leakage. D) indications create a barrier for particles to move over the surface. ------------ Correct Answer - ---------- C) indications are a location of flux leakage. Visible dye penetration requires: (Multiple Choice) A) good white lighting. B) a source of electricity to run equipment. C) indoor environment. D) an outdoor environment with ultraviolet lighting. ------------ Correct Answer ----------- A) good white lighting Which of the following is true of leak testing? (Multiple Choice) A) It is not required if visual testing is carried out B) It may replace pneumatic proof testing C) It may replace hydrostatic proof testing D) It is used for liquid and gas retaining containers. ------------ Correct Answer ----------- D) It is used for liquid and gas retaining containers.
The phenomenon where water rises up a narrow tube or by which a liquid can penetrate is: (Multiple Choice) A) capillary action. B) surface tension. C) viscosity. ------------ Correct Answer ----------- A) capillary action. Magnetic particle inspection of cast iron requires a stronger magnetic field than structural steels because: (Multiple Choice) A) the permeability is higher in cast iron. B) cast iron is non-ferrous. C) cast iron has a rough surface. D) the permeability is lower in cast iron. ------------ Correct Answer ----------- D) the permeability is lower in cast iron. The coils in yokes have a large number of turns that produce current magnitudes of: (Multiple Choice) A) 50 to 100 amps B) 1000 to 1500 amps C) 5 to 10 amps D) 100 amps per inch ------------ Correct Answer ----------- C) 5 to 10 amps Dye penetration reveals which kind of discontinuities? (Multiple Choice) A) Surface only B) Subsurface porosity and deep cracks C) Surface and subsurface linear and round indications D) Only relevant indications ------------ Correct Answer ----------- A) Surface only The level of residual magnetic flux remaining in a ferromagnetic material when an applied field is removed is known as: (Multiple Choice) A) coercive force. B) saturation. C) retentivity. D) flux leakage. ------------ Correct Answer ----------- C) retentivity. Which of the following best describes the basis of the magnetic particle inspection method? (Multiple Choice) A) The increased resistance to the flow of electric current when a discontinuity is present B) The attraction of magnetic particles to a flux leakage field formed when a discontinuity lies parallel to an applied magnetic field C) The attraction of magnetic particles to a flux leakage field formed when a discontinuity lies at
An irregular, dense white spot is seen on the radiograph of a weld. Assuming it was caused by the welding process used, which one of the processes below would be responsible? a) SMAW process. b) GTAW process. c) GMAW process. d) ST process. e) ESW process. ---------- Correct Answer ------------- b) GTAW process. Which of the following operations is known to result in the emission of ionizing radiation at levels dangerous to human health? a) Shielded metal arc welding. b) Plasma arc welding. c) Operation of high voltage portable generator sets. d) Radiographic inspection. e) Electroslag and electrogas welding. ---------- Correct Answer ------------- d) Radiographic inspection. The ultrasonic transducer is pressed against the plate of a welded joint. The sound travels longitudinally through the plate to the opposite side. The signal seen on the UT screen that comes from this opposite side of the plate: a) Is the initial pulse signal. b) Is the back reflection signal. c) Is the front reflection signal. d) Must be equal in amplitude to any defect signal. e) Cannot be used for establishing the thickness of the material under test. ---------- Correct Answer ------------- b) Is the back reflection signal. Which of the following is a stainless steel electrode? a) E4918- 1 b) E4918-A c) E d) E308- 16 e) E4111 ---------- Correct Answer ------------- d) E308- 16 Reverse polarity refers to the use of a: a) AC power source, electrode + b) DC power source, electrode + c) AC power source, electrode - d) DC power source, electrode - ---------- Correct Answer ------------- b) DC power source, electrode +
Which welding process(es) can result in metallic inclusions in the weld? a) SMAW. b) FCAW. c) GMAW. d) GTAW. e) SAW ---------- Correct Answer ------------- d) GTAW. In producing a drawing for a scale of 1:50, what would be the distance represented by a distance on the drawing of 6 cm? a) 12 cm. b) 30 cm. c) 50 cm. d) 240 cm. e) 300 cm. ---------- Correct Answer ------------- e) 300 cm. As a general rule, weld discontinuities detected by ultrasonic testing are accepted or rejected on the basis of: a) Vertical linearity. b) Time base analysis. c) Horizontal response data. d) Noise to signal ratio. e) Signal amplitude. ---------- Correct Answer ------------- e) Signal amplitude. An advantage of an AC welding circuit is: a) It is best used with large electrodes on thin materials. b) It is best used with small electrodes on thin sections. c) It helps to eliminate arc blow. d) It minimizes internal undercut. ---------- Correct Answer ------------- c) It helps to eliminate arc blow. The resistance of steel to failure by brittle fracture is commonly assessed by conducting a: a) Rockwell C hardness test. b) Tensile test. c) Chemical analysis. d) Hydrogen embrittlement test. e) Notched bar impact test. ---------- Correct Answer ------------- e) Notched bar impact test. Which one of the following SMAW electrodes is restricted to horizontal and flat position welding? a) EXX
Select the cutting process that would provide the narrowest heat affected zone when cutting 12. mm (0.5 in) thick carbon steel. a) Oxy-acetylene cutting. b) Air-carbon arc cutting. c) Oxy-propane cutting. d) Plasma arc cutting. e) Laser beam cutting ---------- Correct Answer ------------- e) Laser beam cutting Which of the following refers to a welder test where a pipe assembly is placed vertically and the joint welded in the horizontal position without rotating the assembly? a) 1G b) 2G c) 3G d) 5G e) 6G ---------- Correct Answer ------------- b) 2G Which of the following imperfections is normally considered as unacceptable regardless of size or location? a) Porosity. b) Crack. c) Inadequate penetration. d) Lamination. e) Burn-through. ---------- Correct Answer ------------- b) Crack. Select the correct penetrameter thickness for 2% sensitivity when radiographing a weldment 1. inches in thickness. a) 0.012 in. b) 0.015 in. c) 0.025 in. d) 0.030 in. ---------- Correct Answer ------------- c) 0.025 in. A backing gas is used to: a) Prevent root burn-through. b) Reduce root concavity. c) Support the molten root metal. d) Prevent root oxide contamination. ---------- Correct Answer ------------- d) Prevent root oxide contamination. Constant potential power sources with the slope control are used for which type of mode of transfer?
a) Globular transfer. b) Spray transfer. c) Pulsed current transfer. d) Short circuit transfer. e) Axial spray transfer. ---------- Correct Answer ------------- d) Short circuit transfer. When using post-emulsifiable penetrants, the emulsifier must remain in contact with the surface long enough to mix with the excess penetrant but not long enough to reach penetrant in the discontinuities. True False ------------ Correct Answer ----------- True Which of the following is a source of non-relevant indications that is NOT a result of material changes? Residual magnetism Excessive magnetizing field Permeability A and B ------------ Correct Answer ----------- A and B Is there a standard for certifying operators for the eddy current method and for magnetic particle inspection? No Yes ------------ Correct Answer ----------- Yes A disadvantage of magnetic particle inspection is that it is impossible to obtain any kind of permanent record of the indication. True False ------------ Correct Answer ----------- False What type of developer is normally used with the solvent-removal process to spot check welds? non-aqueous dry powder water suspendable water soluble ------------ Correct Answer ----------- non-aqueous Which of the following best describes the basis of the magnetic particle inspection method? The attraction of magnetic particles to the strong fields formed when a material is magnetically saturated. The attraction of magnetic particles to a flux leakage field formed when a discontinuity lies at a perpendicular angle to the induced magnetic field.
Testing for leaks ------------ Correct Answer ----------- Measuring the growth of fatigue cracks. False indications are not associated with discontinuities, but non-relevant indications are. True False ------------ Correct Answer ----------- True When using liquid penetrant inspection, the surface must be ground smooth to remove all irregularities before applying the penetrant. True False ------------ Correct Answer ----------- False The level of residual magnetic flux remaining in a ferromagnetic material when an applied field is removed is known as.... Retentivity. None of the above Coercive force. Saturation. ------------ Correct Answer ----------- Retentivity. Which of the following statements is true? The eddy current method is based on measuring the change in voltage across a discontinuity when an eddy current flows. The eddy current method is based on detecting the flux leakage around a discontinuity using a Hall detector. The eddy current method normally uses direct current to increase depth capability. The eddy current method is based on detecting changes in the inductive reactance of a coil due to disturbance of the eddy current and can only be used on ferromagnetic metals. ------------ Correct Answer ----------- The eddy current method is based on detecting changes in the inductive reactance of a coil due to disturbance of the eddy current and can only be used on ferromagnetic metals. These are the changes in a material that could cause a magnetic particle indication in the absence of a discontinuity. Composition, microstructure, cracks, porosity Work hardening, heat treatment, porosity, magnetism Composition, microstructure, work hardening, heat treatment None of the above ------------ Correct Answer ----------- Composition, microstructure, work hardening, heat treatment What is a potential effect of spraying on too much developer? It could mask indications.
It could harden. It could rust. It could crack. ------------ Correct Answer ----------- It could mask indications. Is there a standard for certifying operators using the liquid penetrant inspection method? Yes CAN/CGSB 59. No Yes CAN/CGSB 48. Yes CAN/CGSB 78.97 ------------ Correct Answer ----------- Yes CAN/CGSB 48. How should a fluorescent dye be viewed? Under blue light Under white light Under red light Under black light ------------ Correct Answer ----------- Under black light Does the liquid penetrant process work on stainless steel and aluminum? Yes No ------------ Correct Answer ----------- Yes What is the range of the applied field (relative to saturation) normally used in magnetic particle inspection? 50%-75% 0%-40% 30%-70% 60%-100% ------------ Correct Answer ----------- 30%-70% The fluorescent post-emulsified penetrant process is often recommended for high-sensitivity applications such as detection of fatigue cracks. True False ------------ Correct Answer ----------- True Eddy current is used to inspect: (Multiple Choice) A) heat exchanger tubes. B) smooth non-magnetic surfaces. C) surface and subsurface of products that do not permit surface contact. D) All of the above ------------ Correct Answer ----------- D) All of the above Which of the following LPI methods is most suitable for detecting fatigue cracks? (Multiple Choice)
magnetized. Variations in material composition, microstructure, hardness, heat treatment, or work hardening may affect: (Multiple Choice) A) acceptance criteria. B) induction. C) permeability. D) interpretation. ------------ Correct Answer ----------- C) permeability. The procedure of reversing the magnetic field in decreasing strength is: (Multiple Choice) A) case hardening. B) annealing. C) improving the magnetization characteristics. D) demagnetization. ------------ Correct Answer ----------- D) demagnetization. The ability of a liquid penetrant to be used for leak testing depends on the phenomenon of: (Multiple Choice) A) fluorescence. B) capillary action. C) density. D) viscosity. E) lipophilic. ------------ Correct Answer ----------- B) capillary action. Which of the following statements is true? (Multiple Choice) A) The eddy current method is based on detecting the flux leakage around a discontinuity using a Hall detector. B) The eddy current method is based on detecting changes in the inductive reactance of a coil due to disturbance of the eddy current by a discontinuity and can be used on non-ferrous metals. C) The eddy current method is based on detecting changes in the inductive reactance of a coil due to disturbance of the eddy current and can only be used on ferromagnetic metals. D) The eddy current method normally uses direct current to increase depth capability. ------------ Correct Answer ----------- B) The eddy current method is based on detecting changes in the inductive reactance of a coil due to disturbance of the eddy current by a discontinuity and can be used on non-ferrous metals. Which of the following is not a factor in determining the penetrant technique to use? (Multiple Choice) A) Surface condition of the part B) Type of discontinuity sought C) Cost of inspection D) Access to the test surface ------------ Correct Answer ----------- C) Cost of inspection
Eddy current has the following advantage over magnetic particle examination? (Multiple Choice) A) It can be used on non-ferrous materials B) It can penetrate steel 6 mm deep C) Operator certification is not required D) It does not require data management ------------ Correct Answer ----------- A) It can be used on non-ferrous materials What is a disadvantage when using three-phase full wave direct current (FWDC)? (Multiple Choice) A) High residual magnetic field B) Low residual magnetic field C) Only surface discontinuities may be detected D) High voltage and low currents are required ------------ Correct Answer ----------- A) High residual magnetic field According to CSA W59, the criteria used for evaluating liquid penetrant testing are the same as those for: (Multiple Choice) A) ultrasonic inspection. B) visual inspection. C) radiographic inspection. ------------ Correct Answer ----------- B) visual inspection. The retentivity of a material is inversely proportional to: (Multiple Choice) A) permeability. B) reluctance. C) temperature. D) None of the above ------------ Correct Answer ----------- A) permeability. How is excess penetrant removed when using a post-emulsified penetrant? (Multiple Choice) A) By dipping or spraying on an emulsifier then water washing. B) By brushing on an emulsifier then using a solvent. C) By water washing immediately after the dwell time. D) By using a solvent immediately after the dwell time. ------------ Correct Answer ----------- A) By dipping or spraying on an emulsifier then water washing. A leak test method that utilizes a pressure differential across the wall surfaces is the: (Multiple Choice) A) vacuum test. B) hydrostatic pressure test. C) water test. D) pneumatic pressure test. ------------ Correct Answer ----------- A) vacuum test.
The most sensitive leak testing method utilizes: (Multiple Choice) A) visible penetrant and developer. B) vacuum box with soapy water. C) low pressure air with a helium tracer. D) solvent penetrants and sniffers. ------------ Correct Answer ----------- C) low pressure air with a helium tracer. Direct spraying of solvent on the test surface to remove excess penetrant is not recommend because: (Multiple Choice) A) the pressure of the spray can over wash the penetrant. B) the penetrant will take longer to bleed out. C) direct spraying will not adversely affect the results. D) none of the above. ------------ Correct Answer ----------- A) the pressure of the spray can over wash the penetrant. Which organization stipulates the requirements for qualification of NDE personnel in Canada? (Multiple Choice) A) Canadian General Standards Board B) Canadian Welding Bureau C) Natural Resources Canada D) American Society for Testing Materials ------------ Correct Answer ----------- A) Canadian General Standards Board How is the excess penetrant removed when portable solvent-removable LPI method is performed? (Multiple Choice) A) Spray the solvent remover on the test piece and wipe clean with a sponge cloth immediately B) Spray the solvent remover on the test piece and allow to dry by vapourization C) Apply solvent for a suitable dwell time and remove by brushing D) Wipe away the excess penetrant with a clean cloth, then wipe surface clean with a cloth lightly moistened with solvent remover ------------ Correct Answer ----------- D) Wipe away the excess penetrant with a clean cloth, then wipe surface clean with a cloth lightly moistened with solvent remover What weight should an AC yoke be capable of lifting to verify magnetization? (Multiple Choice) A) 4.5kg (10 lb) B) 45 kg (100 lb) C) 0.45 kg (1 lb) D) 18 kg (40 lb) ------------ Correct Answer ----------- A) 4.5kg (10 lb) Which of the following agencies is responsible for issuing qualifications of NDE personnel in
Canada? (Multiple Choice) A) ASME B) CINDE C) NRCan D) CGSB ------------ Correct Answer ----------- C) NRCan Why Eddy Current techniques are not widely applied to weld inspection (Multiple Choice) A) Due to surface irregularities B) Due to low current C) Due to low reactance D) Due to instrument fragility ------------ Correct Answer ----------- A) Due to surface irregularities What is a typical maximum depth of detection for the eddy current method in non-ferrous metals? (Multiple Choice) A) 6 mm B) 35 mm C) 0.25 mm ------------ Correct Answer ----------- A) 6 mm Eddy current reveals which kind of discontinuities? (Multiple Choice) A) Surface only B) Subsurface only C) Surface and subsurface D) Those comparable to UT ------------ Correct Answer ----------- C) Surface and subsurface When using LPI, which of the following is most likely an indication of a crack? (Multiple Choice) A) Diffused or weak indications B) Continuous very straight line C) Small dots D) Intermittent or continuous line with slight jags ------------ Correct Answer ----------- D) Intermittent or continuous line with slight jags What is an advantage of dye penetrant testing over RT? (Multiple Choice) A) It only needs access to the surface being inspected B) It requires access to both sides to check all the weld C) It requires data management D) It needs isotopes ------------ Correct Answer ----------- A) It only needs access to the surface being inspected
D) Twice as much penetrant should be used due to evaporation. ------------ Correct Answer ------- ---- B) Penetrants evaporate on hot welds Which of the following statements is true regarding the MPI method? (Multiple Choice) A) A DC yoke should be placed along the weld to detect fusion boundary cracks. B) An AC yoke should be placed along the weld to detect fusion boundary cracks. C) An AC yoke should be placed across the weld to detect fusion boundary cracks. D) The prods should be placed across the weld to detect fusion boundary cracks. ------------ Correct Answer ----------- C) An AC yoke should be placed across the weld to detect fusion boundary cracks. What is the main risk of LPI testing a cold surface? (Multiple Choice) A) Freezing the penetrant B) The penetrant does not enter the discontinuity C) Increased dwell time is required. D) Evaporation of the liquid ------------ Correct Answer ----------- B) The penetrant does not enter the discontinuity What is the name used to indicate a discontinuity local field in MPI? (Multiple Choice) A) Flux leakage B) Gap leakage C) Tesla D) None of the above ------------ Correct Answer ----------- A) Flux leakage Which of the following penetrants require treatment with a separate agent before the excess can be removed? (Multiple Choice) A) Post-emulsified B) Water-washable C) Non-ferrous removal D) Solvent-removable ------------ Correct Answer ----------- A) Post-emulsified Which of the following is a recommended cleaning method prior to LPI? (Multiple Choice) A) Shot blasting B) Grinding C) Peening D) Vapour degreasing ------------ Correct Answer ----------- D) Vapour degreasing What advantage does the wet fluorescent particle method have over the dry particle method? (Multiple Choice) A) It is more sensitive
B) It is easier to use C) It works best on rough surfaces D) It is less expensive ------------ Correct Answer ----------- A) It is more sensitive Why is it necessary to have a dwell time in the application of penetrant testing? (Multiple Choice) A) Because of the type of penetrant used B) Because of the time it takes for penetrant to enter the cavity C) Because of the presence of oil and paint at the surface D) Because of the presence of surface scale on the material ------------ Correct Answer ----------- B) Because of the time it takes for penetrant to enter the cavity The distance a liquid will rise inside the tube is determined largely by the: (Multiple Choice) A) surface tension, contact angle, and tube diameter. B) external pressure. C) internal pressure in the tube. D) evaporation of the liquid. ------------ Correct Answer ----------- A) surface tension, contact angle, and tube diameter. A work hardened area due to forming may result in: (Multiple Choice) A) decreased permeability. B) increased permeability. C) the material becomes non-magnetic. D) saturation. ------------ Correct Answer ----------- A) decreased permeability. To properly evaluate an indication using the liquid penetrant inspection method, the inspector must know the: (Multiple Choice) A) test procedures and techniques. B) properties of the material. C) origin of the material. D) end use of the part. ------------ Correct Answer ----------- A) test procedures and techniques. The value of the applied field (H) to bring down the residual value of flux (B) to zero is called the: (Multiple Choice) A) saturation field. B) demagnetization value. C) coercive force. D) phase reversal factor. ------------ Correct Answer ----------- C) coercive force. Which current type is less sensitive to surface contact problems? (Multiple Choice)
