WX-006 – Weld Discontinuities, Mechanical
Testing & NDT Principles – Complete Practice Set
with Verified Answers (2024)
All welds have discontinuities and flaws, but they are not necessarily defects. -
True✅✅✅
Uniformity scattered porosity is most frequently caused by contamination at the root. -
False✅✅✅
Arc strikes can be removed by grinding. - False✅✅✅
Tensile tests are performed with specimens prepared as rounded bars or flat strips. -
True✅✅✅
When applying a nick-break test, there is generally no difference in the appearance of the
fractured surface due to the method of applying force. - True✅✅✅
All guided bend tests have the same bending radius. - False✅✅✅
In a guided bend test, all grinding marks should run circumferentially to the specimen so that
they do not cause stress. - False✅✅✅
When diluting an acid, the acid should be added to the water, while stirring the water
carefully. - True✅✅✅
An active visual inspection should be used after other nondestructive or mechanical tests are
used. - False✅✅✅
The two methods used in product quality control are________. - A, mechanical and
nondestructive✅✅✅
Critical parts or weld are usually ________ percent tested. - D, 100✅✅✅
A ________ is an interruption in the typical structure of the weld, whereas a ________ is a
flaw which renders the part unable to meet acceptable standards. - D, discontinuity,
defect✅✅✅
Each code gives the ________ that changes a discontinuity to a defect. - C,
tolerance✅✅✅
________ results from gas that was dissolved in the molten weld pool. - A, porosity✅✅✅
________ is either spherical or cylindrical bubbles. - A, porosity✅✅✅The E7018
electrode should not be weaved wider than ________ times the diameter of then rod. - C,
2.5✅✅✅
________ are nonmetallic materials trapped in the weld metal between weld beads. - B,
inclusions✅✅✅
________ is the lack of coalescence between the molten filler metal and previously
deposited filler and/or base metal. - C, incomplete fusion✅✅✅
Testing & NDT Principles – Complete Practice Set
with Verified Answers (2024)
All welds have discontinuities and flaws, but they are not necessarily defects. -
True✅✅✅
Uniformity scattered porosity is most frequently caused by contamination at the root. -
False✅✅✅
Arc strikes can be removed by grinding. - False✅✅✅
Tensile tests are performed with specimens prepared as rounded bars or flat strips. -
True✅✅✅
When applying a nick-break test, there is generally no difference in the appearance of the
fractured surface due to the method of applying force. - True✅✅✅
All guided bend tests have the same bending radius. - False✅✅✅
In a guided bend test, all grinding marks should run circumferentially to the specimen so that
they do not cause stress. - False✅✅✅
When diluting an acid, the acid should be added to the water, while stirring the water
carefully. - True✅✅✅
An active visual inspection should be used after other nondestructive or mechanical tests are
used. - False✅✅✅
The two methods used in product quality control are________. - A, mechanical and
nondestructive✅✅✅
Critical parts or weld are usually ________ percent tested. - D, 100✅✅✅
A ________ is an interruption in the typical structure of the weld, whereas a ________ is a
flaw which renders the part unable to meet acceptable standards. - D, discontinuity,
defect✅✅✅
Each code gives the ________ that changes a discontinuity to a defect. - C,
tolerance✅✅✅
________ results from gas that was dissolved in the molten weld pool. - A, porosity✅✅✅
________ is either spherical or cylindrical bubbles. - A, porosity✅✅✅The E7018
electrode should not be weaved wider than ________ times the diameter of then rod. - C,
2.5✅✅✅
________ are nonmetallic materials trapped in the weld metal between weld beads. - B,
inclusions✅✅✅
________ is the lack of coalescence between the molten filler metal and previously
deposited filler and/or base metal. - C, incomplete fusion✅✅✅
