ASNT Level 3 Study Exam Questions and
Correct Answers
Question 1
In immersion testing, proof that the search unit is normal (perpendicular) to a flat
entry surface is indicated by:
a. maximum reflection amplitude from the entry surface.
b. elimination of water multiples.
c. maximum reflection amplitude from the back surface.
d. maximum amplitude of the initial pulse.
Correct Answer
a. maximum reflection amplitude from the entry surface.
Question 2
The energy of gamma rays is expressed by which of the following units of
measurement?
a. Curie (gigabecquerel).
b. Roentgen (coulomb per kilogram).
c. Half-life.
d. Kiloelectronvolts (keV) or megaelectronvolts (MeV).
Correct Answer
d. Kiloelectronvolts (keV) or megaelectronvolts (MeV).
Question 3
In accordance with SNT-TC-1A, the NDT Level III should be responsible for:
a. ensuring Level II personnel examine Level I personnel.
b. interpretation o all test results obtained by Level II personnel.
c. all questions to be used on examinations for Level I and Level II.
d. writing all company standard operating procedures.
Correct Answer
c. all questions to be used on examinations for Level I and Level II.
Page 1 of 109
,Question 4
What is the direction of view called in a borescope or videoscope when viewing 45
degrees off the straight-ahead direction of the probe?
a. Forward slant.
b. Forward oblique.
c. Forespective.
d. Angulated.
Correct Answer
b. Forward oblique.
Question 5
Which of the following statements is true concerning penetrant testing of welds with
rough surfaces?
a. The post-emulsified process offers advantages over the water-washable process.
b. If the solvent removal process is used, the best developer would be an aqueous
suspension.
c. Welds with rough surfaces cannot be successfully tested by any penetrant method.
d. Welds with rough surfaces may need to be ground smooth prior to penetrant
testing.
Correct Answer
d. Welds with rough surfaces may need to be ground smooth prior to penetrant
testing.
Question 6
The employer can consider an individual to be qualified to Level III, but only if he or
she:
a. takes a comprehensive written examination.
b. has in excess of 5 years' experience comparable to a Level II.
c. meets the requirements of the employer's written practice.
d. has taken the ASNT NDT Level III Basic and at least one of the Method
examinations.
Correct Answer
c. meets the requirements of the employer's written practice.
Page 2 of 109
,Question 7
In order to generate measurable eddy currents in a test specimen, the specimen must
be:
a. an electrical conductor.
b. an electrical insulator.
c. a ferromagnetic material.
d. a nonmagnetic material.
Correct Answer
a. an electrical conductor.
Question 8
Which of the following materials cannot be tested by magnetic particle techniques?
a. Copper alloys.
b. High alloy steels.
c. Tool steels.
d. Ferritic stainless steels.
Correct Answer
a. Copper alloys.
Question 9
The term used to describe a material's surface temperature response to a given
energy input is called:
a. diffuse reflectivity.
b. thermal conductance.
c. thermal effusivity.
d. spectral transmittance.
Correct Answer
c. thermal effusivity.
Page 3 of 109
, Question 10
Assuming no significant leakage, if the temperature increases, during a pressure drop
leak test, the pressure in the system under test would:
a. increase.
b. remain the same.
c. decrease.
d. first increase, then decrease to its former level.
Correct Answer
a. increase.
Question 11
The current used for magnetization when performing magnetic flux leakage
inspection must be a:
a. steady nonfluctuating current.
b. current that reverses direction at a consistent rate.
c. current that fluctuates on and off at a consistent rate.
d. current that varies based on the thickness of the material.
Correct Answer
a. steady nonfluctuating current.
Question 12
It is often possible to sort various alloys of a nonmagnetic metal by means of an
electromagnetic test when:
a. there is a unique range of permeability values for each alloy.
b. there is a unique range of conductivity values for each allow.
c. the direction of induced eddy currents varies for each allow.
d. the magnetic domains for each alloy are different.
Correct Answer
b. there is a unique range of conductivity values for each allow.
Page 4 of 109
Correct Answers
Question 1
In immersion testing, proof that the search unit is normal (perpendicular) to a flat
entry surface is indicated by:
a. maximum reflection amplitude from the entry surface.
b. elimination of water multiples.
c. maximum reflection amplitude from the back surface.
d. maximum amplitude of the initial pulse.
Correct Answer
a. maximum reflection amplitude from the entry surface.
Question 2
The energy of gamma rays is expressed by which of the following units of
measurement?
a. Curie (gigabecquerel).
b. Roentgen (coulomb per kilogram).
c. Half-life.
d. Kiloelectronvolts (keV) or megaelectronvolts (MeV).
Correct Answer
d. Kiloelectronvolts (keV) or megaelectronvolts (MeV).
Question 3
In accordance with SNT-TC-1A, the NDT Level III should be responsible for:
a. ensuring Level II personnel examine Level I personnel.
b. interpretation o all test results obtained by Level II personnel.
c. all questions to be used on examinations for Level I and Level II.
d. writing all company standard operating procedures.
Correct Answer
c. all questions to be used on examinations for Level I and Level II.
Page 1 of 109
,Question 4
What is the direction of view called in a borescope or videoscope when viewing 45
degrees off the straight-ahead direction of the probe?
a. Forward slant.
b. Forward oblique.
c. Forespective.
d. Angulated.
Correct Answer
b. Forward oblique.
Question 5
Which of the following statements is true concerning penetrant testing of welds with
rough surfaces?
a. The post-emulsified process offers advantages over the water-washable process.
b. If the solvent removal process is used, the best developer would be an aqueous
suspension.
c. Welds with rough surfaces cannot be successfully tested by any penetrant method.
d. Welds with rough surfaces may need to be ground smooth prior to penetrant
testing.
Correct Answer
d. Welds with rough surfaces may need to be ground smooth prior to penetrant
testing.
Question 6
The employer can consider an individual to be qualified to Level III, but only if he or
she:
a. takes a comprehensive written examination.
b. has in excess of 5 years' experience comparable to a Level II.
c. meets the requirements of the employer's written practice.
d. has taken the ASNT NDT Level III Basic and at least one of the Method
examinations.
Correct Answer
c. meets the requirements of the employer's written practice.
Page 2 of 109
,Question 7
In order to generate measurable eddy currents in a test specimen, the specimen must
be:
a. an electrical conductor.
b. an electrical insulator.
c. a ferromagnetic material.
d. a nonmagnetic material.
Correct Answer
a. an electrical conductor.
Question 8
Which of the following materials cannot be tested by magnetic particle techniques?
a. Copper alloys.
b. High alloy steels.
c. Tool steels.
d. Ferritic stainless steels.
Correct Answer
a. Copper alloys.
Question 9
The term used to describe a material's surface temperature response to a given
energy input is called:
a. diffuse reflectivity.
b. thermal conductance.
c. thermal effusivity.
d. spectral transmittance.
Correct Answer
c. thermal effusivity.
Page 3 of 109
, Question 10
Assuming no significant leakage, if the temperature increases, during a pressure drop
leak test, the pressure in the system under test would:
a. increase.
b. remain the same.
c. decrease.
d. first increase, then decrease to its former level.
Correct Answer
a. increase.
Question 11
The current used for magnetization when performing magnetic flux leakage
inspection must be a:
a. steady nonfluctuating current.
b. current that reverses direction at a consistent rate.
c. current that fluctuates on and off at a consistent rate.
d. current that varies based on the thickness of the material.
Correct Answer
a. steady nonfluctuating current.
Question 12
It is often possible to sort various alloys of a nonmagnetic metal by means of an
electromagnetic test when:
a. there is a unique range of permeability values for each alloy.
b. there is a unique range of conductivity values for each allow.
c. the direction of induced eddy currents varies for each allow.
d. the magnetic domains for each alloy are different.
Correct Answer
b. there is a unique range of conductivity values for each allow.
Page 4 of 109
