CWB Level 1 Inspector - Basic Welding Inspection Questions
and Answers |Fall 2025/2026 Update | 100% Correct
Question 1
What is the most common way to induce a magnetic field for MPI?
A) AC/DC prod method
B) Permanent magnet method
C) Rare earth magnet method
D) AC/DC yoke method
Correct Answer
D
Question 2
Radiographic techniques that employ X-rays are safer to use than Gamma-rays because:
A) fewer X-rays are used than Gamma-rays to produce the same film density.
B) Gamma-rays are safer than X-Rays because they tend to be of specific wavelengths and therefore their penetrability is
more readily predicted.
C) X-Rays are safer because they can be turned off by removing the source of electricity.
D) they are less powerful than Gamma-rays and therefore easier to shield.
Correct Answer
C
Page 1 of 11
, Question 3
Magnetic particle inspection utilizes a magnetic field that is induced in non-magnetic materials. (True/False)
Correct Answer
FALSE
Question 4
What is used by a welding inspector to standardize inspections and provide a format for the documentation of inspection
activities?
A) Fillet weld gauge
B) Procedure specification
C) Welding procedure data sheet
D) Inspection checklist
Correct Answer
D
Question 5
When using magnetic particle inspection, the use of prods is prohibited by certain codes:
A) because it may leave residual magnetism.
B) because it is less sensitive than other methods of magnetization.
C) due to the chance of missing indications near the prods.
D) due to the chance of causing arc strikes.
Correct Answer
D
Page 2 of 11
and Answers |Fall 2025/2026 Update | 100% Correct
Question 1
What is the most common way to induce a magnetic field for MPI?
A) AC/DC prod method
B) Permanent magnet method
C) Rare earth magnet method
D) AC/DC yoke method
Correct Answer
D
Question 2
Radiographic techniques that employ X-rays are safer to use than Gamma-rays because:
A) fewer X-rays are used than Gamma-rays to produce the same film density.
B) Gamma-rays are safer than X-Rays because they tend to be of specific wavelengths and therefore their penetrability is
more readily predicted.
C) X-Rays are safer because they can be turned off by removing the source of electricity.
D) they are less powerful than Gamma-rays and therefore easier to shield.
Correct Answer
C
Page 1 of 11
, Question 3
Magnetic particle inspection utilizes a magnetic field that is induced in non-magnetic materials. (True/False)
Correct Answer
FALSE
Question 4
What is used by a welding inspector to standardize inspections and provide a format for the documentation of inspection
activities?
A) Fillet weld gauge
B) Procedure specification
C) Welding procedure data sheet
D) Inspection checklist
Correct Answer
D
Question 5
When using magnetic particle inspection, the use of prods is prohibited by certain codes:
A) because it may leave residual magnetism.
B) because it is less sensitive than other methods of magnetization.
C) due to the chance of missing indications near the prods.
D) due to the chance of causing arc strikes.
Correct Answer
D
Page 2 of 11
