Master the CWB Level 2 NDT Exam: 2026
Practice Questions for MPI & PT
Certification
Description:
Get fully prepared for your CWB Level 2 certification with our expertly crafted 55-question
practice exam covering Magnetic Particle (MPI) and Liquid Penetrant Testing (PT). Based on the
latest CAN/CGSB 48.9712 standards, this test includes detailed answers and explanations to
strengthen your understanding of key concepts—from flux leakage and penetrant methodologies
to demagnetization and indication interpretation. Whether you're reviewing for certification or
honing your NDT skills, this resource mirrors actual exam format and difficulty.
Download your free practice test now and test your way to certification success!
, CWB Level 2 NDT Exam Questions 2026: MPI & PT Practice Test
1. What are the 5 main categories for LP indications?
Answer:
1. Continuous Line
2. Intermittent Line
3. Rounded
4. Small Dots
5. Diffused or Weak
Explanation:
These categories help classify the types of indications observed during liquid penetrant testing to
better identify and evaluate potential discontinuities.
2. Surface tension is best defined as:
a) The angle a liquid makes with a surface
b) The property of a liquid that tends to reduce its surface area
c) The ability of a liquid to wet a surface
d) The force that causes capillary action
Answer:
b) The property of a liquid that tends to reduce its surface area
Explanation:
Surface tension is a physical property that causes the surface of a liquid to contract, minimizing
its surface area.
3. If a liquid has good wetting, it has a ______ contact angle.
Answer:
Small contact angle
Explanation:
A small contact angle indicates that the liquid spreads easily on the surface, which is
characteristic of good wetting.
, 4. How are LP procedures/techniques qualified?
Answer:
Using a comparator block
Explanation:
A comparator block with known defects is used to validate and qualify liquid penetrant testing
procedures and techniques.
5. False indications are:
a) Indications not associated with any discontinuity
b) Indications caused by material design
c) Indications caused by improper cleaning
d) All of the above
Answer:
a) Indications not associated with any discontinuity
Explanation:
False indications are those that do not correspond to actual flaws or defects in the material.
6. To which standard are CGSB inspectors certified?
Answer:
CAN/CGSB 48.9712
Explanation:
This is the current Canadian standard for the certification of nondestructive testing personnel.
7. Magnetic particle testing cannot be used on which types of materials?
Answer:
Non-ferrous, austenitic stainless steel, copper, aluminum
Explanation:
MPI is only effective on ferromagnetic materials due to their magnetic permeability.
Practice Questions for MPI & PT
Certification
Description:
Get fully prepared for your CWB Level 2 certification with our expertly crafted 55-question
practice exam covering Magnetic Particle (MPI) and Liquid Penetrant Testing (PT). Based on the
latest CAN/CGSB 48.9712 standards, this test includes detailed answers and explanations to
strengthen your understanding of key concepts—from flux leakage and penetrant methodologies
to demagnetization and indication interpretation. Whether you're reviewing for certification or
honing your NDT skills, this resource mirrors actual exam format and difficulty.
Download your free practice test now and test your way to certification success!
, CWB Level 2 NDT Exam Questions 2026: MPI & PT Practice Test
1. What are the 5 main categories for LP indications?
Answer:
1. Continuous Line
2. Intermittent Line
3. Rounded
4. Small Dots
5. Diffused or Weak
Explanation:
These categories help classify the types of indications observed during liquid penetrant testing to
better identify and evaluate potential discontinuities.
2. Surface tension is best defined as:
a) The angle a liquid makes with a surface
b) The property of a liquid that tends to reduce its surface area
c) The ability of a liquid to wet a surface
d) The force that causes capillary action
Answer:
b) The property of a liquid that tends to reduce its surface area
Explanation:
Surface tension is a physical property that causes the surface of a liquid to contract, minimizing
its surface area.
3. If a liquid has good wetting, it has a ______ contact angle.
Answer:
Small contact angle
Explanation:
A small contact angle indicates that the liquid spreads easily on the surface, which is
characteristic of good wetting.
, 4. How are LP procedures/techniques qualified?
Answer:
Using a comparator block
Explanation:
A comparator block with known defects is used to validate and qualify liquid penetrant testing
procedures and techniques.
5. False indications are:
a) Indications not associated with any discontinuity
b) Indications caused by material design
c) Indications caused by improper cleaning
d) All of the above
Answer:
a) Indications not associated with any discontinuity
Explanation:
False indications are those that do not correspond to actual flaws or defects in the material.
6. To which standard are CGSB inspectors certified?
Answer:
CAN/CGSB 48.9712
Explanation:
This is the current Canadian standard for the certification of nondestructive testing personnel.
7. Magnetic particle testing cannot be used on which types of materials?
Answer:
Non-ferrous, austenitic stainless steel, copper, aluminum
Explanation:
MPI is only effective on ferromagnetic materials due to their magnetic permeability.
