NDT LEVEL II TECHNICIAN
EXAMINATION QUESTION AND
CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A
INSTANT DOWNLOAD PDF
1. Which NDT method is best suited for detecting surface-breaking defects in
ferromagnetic materials?
A. Radiographic Testing
B. Ultrasonic Testing
C. Magnetic Particle Testing
D. Eddy Current Testing
Magnetic Particle Testing is specifically effective for surface and near-
surface defects in ferromagnetic materials.
2. In liquid penetrant testing, the primary purpose of the penetrant is to:
A. Clean the surface
B. Enter surface-breaking defects
C. Dry the component
D. Magnetize the part
Penetrant works by capillary action to seep into surface discontinuities.
3. Which radiation source is commonly used in industrial radiography?
A. Infrared
B. Ultraviolet
C. Gamma rays
D. Microwave
Gamma rays from isotopes like Ir-192 are widely used in industrial
radiography.
,4. The main advantage of ultrasonic testing is its ability to:
A. Detect only surface defects
B. Measure defect depth accurately
C. Work without calibration
D. Eliminate couplants
UT provides precise information about flaw depth and location.
5. Eddy current testing is most effective on:
A. Nonconductive materials
B. Electrically conductive materials
C. Ferromagnetic materials only
D. Liquids
Eddy currents require electrical conductivity to be induced.
6. In radiographic testing, film density refers to:
A. Thickness of the film
B. Grain size of film
C. Degree of film darkening
D. Radiation strength
Film density is the measure of blackening on the radiograph.
7. Which ultrasonic wave mode travels fastest in a given material?
A. Shear wave
B. Surface wave
C. Longitudinal wave
D. Lamb wave
Longitudinal waves have the highest velocity in solids.
8. In magnetic particle testing, excessive background can be reduced by:
A. Increasing magnetization
B. Improving surface cleaning
C. Using coarser particles
D. Increasing current
Clean surfaces improve particle mobility and reduce background noise.
9. The developer in liquid penetrant testing serves to:
A. Remove penetrant
B. Clean the surface
, C. Draw penetrant out of defects
D. Dry the part
Developer creates contrast by pulling penetrant from flaws.
10.Which defect orientation is hardest to detect with straight-beam ultrasonic
testing?
A. Parallel to sound beam
B. Perpendicular to sound beam
C. Inclined at 45°
D. Surface-breaking
Flaws perpendicular to the beam reflect minimal energy back to the
probe.
11.Radiographic sensitivity is influenced primarily by:
A. Film size
B. Source distance
C. Radiation energy and exposure
D. Viewing light intensity
Proper energy and exposure improve contrast and sensitivity.
12.Eddy current testing is commonly used to detect:
A. Internal porosity
B. Surface cracks
C. Volumetric inclusions
D. Lack of fusion deep inside welds
ECT is very sensitive to surface and near-surface flaws.
13.In UT, the couplant is used to:
A. Reduce probe wear
B. Transmit sound into the material
C. Cool the transducer
D. Increase gain
Couplant eliminates air gaps, allowing sound transmission.
14.Which NDT method requires magnetization of the test object?
A. PT
B. UT
C. RT
EXAMINATION QUESTION AND
CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A
INSTANT DOWNLOAD PDF
1. Which NDT method is best suited for detecting surface-breaking defects in
ferromagnetic materials?
A. Radiographic Testing
B. Ultrasonic Testing
C. Magnetic Particle Testing
D. Eddy Current Testing
Magnetic Particle Testing is specifically effective for surface and near-
surface defects in ferromagnetic materials.
2. In liquid penetrant testing, the primary purpose of the penetrant is to:
A. Clean the surface
B. Enter surface-breaking defects
C. Dry the component
D. Magnetize the part
Penetrant works by capillary action to seep into surface discontinuities.
3. Which radiation source is commonly used in industrial radiography?
A. Infrared
B. Ultraviolet
C. Gamma rays
D. Microwave
Gamma rays from isotopes like Ir-192 are widely used in industrial
radiography.
,4. The main advantage of ultrasonic testing is its ability to:
A. Detect only surface defects
B. Measure defect depth accurately
C. Work without calibration
D. Eliminate couplants
UT provides precise information about flaw depth and location.
5. Eddy current testing is most effective on:
A. Nonconductive materials
B. Electrically conductive materials
C. Ferromagnetic materials only
D. Liquids
Eddy currents require electrical conductivity to be induced.
6. In radiographic testing, film density refers to:
A. Thickness of the film
B. Grain size of film
C. Degree of film darkening
D. Radiation strength
Film density is the measure of blackening on the radiograph.
7. Which ultrasonic wave mode travels fastest in a given material?
A. Shear wave
B. Surface wave
C. Longitudinal wave
D. Lamb wave
Longitudinal waves have the highest velocity in solids.
8. In magnetic particle testing, excessive background can be reduced by:
A. Increasing magnetization
B. Improving surface cleaning
C. Using coarser particles
D. Increasing current
Clean surfaces improve particle mobility and reduce background noise.
9. The developer in liquid penetrant testing serves to:
A. Remove penetrant
B. Clean the surface
, C. Draw penetrant out of defects
D. Dry the part
Developer creates contrast by pulling penetrant from flaws.
10.Which defect orientation is hardest to detect with straight-beam ultrasonic
testing?
A. Parallel to sound beam
B. Perpendicular to sound beam
C. Inclined at 45°
D. Surface-breaking
Flaws perpendicular to the beam reflect minimal energy back to the
probe.
11.Radiographic sensitivity is influenced primarily by:
A. Film size
B. Source distance
C. Radiation energy and exposure
D. Viewing light intensity
Proper energy and exposure improve contrast and sensitivity.
12.Eddy current testing is commonly used to detect:
A. Internal porosity
B. Surface cracks
C. Volumetric inclusions
D. Lack of fusion deep inside welds
ECT is very sensitive to surface and near-surface flaws.
13.In UT, the couplant is used to:
A. Reduce probe wear
B. Transmit sound into the material
C. Cool the transducer
D. Increase gain
Couplant eliminates air gaps, allowing sound transmission.
14.Which NDT method requires magnetization of the test object?
A. PT
B. UT
C. RT
