CWB 1 EXAM (LATEST 2025
QUESTIONS AND VERIFIED
ANSWERS)
b) Blasting with shot or dull sand. - correct answers ✔✔1. Which is not a recommended
method for surface cleaning of a part for liquid penetrant examination?
a) Cleaning with organic solvents.
b) Blasting with shot or dull sand.
c) Cleaning with de-greasers.
d) Use of de-scaling solutions.
e) Ultrasonic cleaning methods.
d) Cracking. - correct answers ✔✔2. Which of the following weld defects is most likely
to be missed by radiography in a weld:
a) Undercutting.
b) Porosity.
,c) Slag inclusions.
d) Cracking.
e) Burn through .
c) Ability of the material to withstand repeated fluctuating loads. - correct answers ✔✔3.
In the choices given below, metallographic tests would be the least informative with
regard to the:
a) Presence of the non-metallic inclusions.
b) Grain structure in the weld and fusion zone.
c) Ability of the material to withstand repeated fluctuating loads.
d) Extent and structure of the heat affected zone.
e) Number of weld passes.
e) 300 cm. - correct answers ✔✔4. In producing a drawing for a scale of 1:50, what
would be the distance represented by a distance on
the drawing of 6 em?
a) 12 cm.
b) 30 cm.
c) 50 cm.
d) 240 cm.
e) 300 cm.
d) An impact test specimen. - correct answers ✔✔5. The mechanical test used to
determine the ability of a material to resist failure by brittle fracture
requires the use of:
a) A tensile test specimen.
b) A bend test specimen.
c) A compression test specimen.
d) An impact test specimen.
e) A spectrographic test.
b) Greater than that in a butt joint. - correct answers ✔✔6. The cooling rate of aT-joint
is:
a) Less than that in a butt joint.
b) Greater than that in a butt joint.
c) Greater than that in a butt joint only where the carbon equivalent is high .
d) Greater at the mid-section than at the start.
e) Greater at the mid-section than at the finish.
d) Inadequate interpass cleaning. - correct answers ✔✔7. What are slag and non-
metallic inclusions usually caused by?
a) Moisture in the weld joint.
b) High welding current.
c) Loss of shielding gas.
d) Inadequate interpass cleaning.
, b) Obtain official approval for the changes. - correct answers ✔✔8. Where deviations
from the drawings are warranted the inspector should do which of the following?
a) Authorize approval of the changes.
b) Obtain official approval for the changes.
c) Reject the work without any further consideration.
d) Stop the work until drawing revisions have been completed.
c) Flux cored arc welding process. - correct answers ✔✔9. With the appropriate
electrode, which of the following welding processes can operate with or without
a shielding gas:
a) Electrogas welding process.
b) Gas metal arc welding process.
c) Flux cored arc welding process.
d) Submerged arc welding process.
e) Pulsed gas metal arc welding process.
d) Groove angle is too small - correct answers ✔✔10. If there is inadequate penetration
at the root of a double vee groove, which of the following
statements best defines the reason for this:
a) Groove angle exceeds specified amount.
b) Root opening too large.
c) Groove depth too large causing melt through on the second side
d) Groove angle is too small.
e) Excessive plate thickness.
c) Applying magnetic particles to the weld while the current is flowing in the yoke. -
correct answers ✔✔11. The continuous method of magnetic particle inspection means:
a) Carrying out all the steps in the process without pause.
b) Using DC current.
c) Applying magnetic particles to the weld while the current is flowing in the yoke.
d) Applying magnetic particle to the test surface while current flows from one leg of the
yoke
through the material to the other leg of the yoke.
e) Precautions must be taken to prevent over-magnetization of the material.
a) Insufficient throat. - correct answers ✔✔12. From the welding problems identified
below which one of the five does not fit the pattern established
by the other four?
a) Insufficient throat.
b) Incorrect bevel angle.
c) Loss of shielding gas.
d) Improper fit up.
e) Use of wrong consumable.
c) Leg size of 1 0 mm. - correct answers ✔✔13. A 10 mm fillet weld has a nominal:
a) Throat dimension of 10 mm.
QUESTIONS AND VERIFIED
ANSWERS)
b) Blasting with shot or dull sand. - correct answers ✔✔1. Which is not a recommended
method for surface cleaning of a part for liquid penetrant examination?
a) Cleaning with organic solvents.
b) Blasting with shot or dull sand.
c) Cleaning with de-greasers.
d) Use of de-scaling solutions.
e) Ultrasonic cleaning methods.
d) Cracking. - correct answers ✔✔2. Which of the following weld defects is most likely
to be missed by radiography in a weld:
a) Undercutting.
b) Porosity.
,c) Slag inclusions.
d) Cracking.
e) Burn through .
c) Ability of the material to withstand repeated fluctuating loads. - correct answers ✔✔3.
In the choices given below, metallographic tests would be the least informative with
regard to the:
a) Presence of the non-metallic inclusions.
b) Grain structure in the weld and fusion zone.
c) Ability of the material to withstand repeated fluctuating loads.
d) Extent and structure of the heat affected zone.
e) Number of weld passes.
e) 300 cm. - correct answers ✔✔4. In producing a drawing for a scale of 1:50, what
would be the distance represented by a distance on
the drawing of 6 em?
a) 12 cm.
b) 30 cm.
c) 50 cm.
d) 240 cm.
e) 300 cm.
d) An impact test specimen. - correct answers ✔✔5. The mechanical test used to
determine the ability of a material to resist failure by brittle fracture
requires the use of:
a) A tensile test specimen.
b) A bend test specimen.
c) A compression test specimen.
d) An impact test specimen.
e) A spectrographic test.
b) Greater than that in a butt joint. - correct answers ✔✔6. The cooling rate of aT-joint
is:
a) Less than that in a butt joint.
b) Greater than that in a butt joint.
c) Greater than that in a butt joint only where the carbon equivalent is high .
d) Greater at the mid-section than at the start.
e) Greater at the mid-section than at the finish.
d) Inadequate interpass cleaning. - correct answers ✔✔7. What are slag and non-
metallic inclusions usually caused by?
a) Moisture in the weld joint.
b) High welding current.
c) Loss of shielding gas.
d) Inadequate interpass cleaning.
, b) Obtain official approval for the changes. - correct answers ✔✔8. Where deviations
from the drawings are warranted the inspector should do which of the following?
a) Authorize approval of the changes.
b) Obtain official approval for the changes.
c) Reject the work without any further consideration.
d) Stop the work until drawing revisions have been completed.
c) Flux cored arc welding process. - correct answers ✔✔9. With the appropriate
electrode, which of the following welding processes can operate with or without
a shielding gas:
a) Electrogas welding process.
b) Gas metal arc welding process.
c) Flux cored arc welding process.
d) Submerged arc welding process.
e) Pulsed gas metal arc welding process.
d) Groove angle is too small - correct answers ✔✔10. If there is inadequate penetration
at the root of a double vee groove, which of the following
statements best defines the reason for this:
a) Groove angle exceeds specified amount.
b) Root opening too large.
c) Groove depth too large causing melt through on the second side
d) Groove angle is too small.
e) Excessive plate thickness.
c) Applying magnetic particles to the weld while the current is flowing in the yoke. -
correct answers ✔✔11. The continuous method of magnetic particle inspection means:
a) Carrying out all the steps in the process without pause.
b) Using DC current.
c) Applying magnetic particles to the weld while the current is flowing in the yoke.
d) Applying magnetic particle to the test surface while current flows from one leg of the
yoke
through the material to the other leg of the yoke.
e) Precautions must be taken to prevent over-magnetization of the material.
a) Insufficient throat. - correct answers ✔✔12. From the welding problems identified
below which one of the five does not fit the pattern established
by the other four?
a) Insufficient throat.
b) Incorrect bevel angle.
c) Loss of shielding gas.
d) Improper fit up.
e) Use of wrong consumable.
c) Leg size of 1 0 mm. - correct answers ✔✔13. A 10 mm fillet weld has a nominal:
a) Throat dimension of 10 mm.
