CWB Welding Inspection Level II Exam New 2025
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Questions and Correct Answer
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.
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
, a perpendicular angle to the induced magnetic field
D) The attraction of magnetic particles to the strong fields formed when a material is
magnetically saturated ------------ Correct Answer ----------- C) The attraction of magnetic
particles to a flux leakage field formed when a discontinuity lies at a perpendicular angle to the
induced magnetic field
The most sensitive method of all penetrant testing systems is: (Multiple Choice)
A) visible penetrant solvent removable.
B) fluorescent penetrant solvent removable.
C) visible penetrant post-emulsified lipophilic.
D) fluorescent penetrant post-emulsifiable lipophilic. ------------ Correct Answer ----------- D)
fluorescent penetrant post-emulsifiable lipophilic.
A conductor has a circular magnetic field while a conductor wrapped in a coil: (Multiple Choice)
A) has a circular field.
B) has a bi-directional field.
C) has a longitudinal field.
D) depends on the shape of the part. ------------ Correct Answer ----------- C) has a longitudinal
field.
When using potential drop inspection, the measured value of the drop will: (Multiple Choice)
A) increase with an increasing discontinuity size.
B) decrease with an increasing discontinuity size.
C) stay the same.
D) vary with the square of the applied resistance. ------------ Correct Answer ----------- A)
increase with an increasing discontinuity size.
The magnetism that stays within a part after the magnetizing field is removed is called: (Multiple
Choice)
A) coercive force.
B) permanence.
C) retentivity.
D) residual magnetism. ------------ Correct Answer ----------- D) residual magnetism.
Which of the following electrodes is classified as a basic electrode:
a) E-6010
b) E4914
c) All cellulosic electrodes.
d) Electrodes containing titania.
e) E4916 ---------- Correct Answer ------------- e) E4916
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