COLORADO NONDESTRUCTIVE TESTING LEVEL II
CERTIFICATION EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2026
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1. What is the primary purpose of Non-Destructive Testing
(NDT)?
A. To improve product appearance
B. To evaluate materials without causing damage
C. To destroy defective components
D. To increase production speed
Correct Answer: B. To evaluate materials without causing
damage
Rationale: NDT methods allow inspection and evaluation of
materials, components, and structures without impairing their
future usefulness.
2. Which NDT method is best suited for detecting surface
cracks in ferromagnetic materials?
A. Ultrasonic Testing
B. Radiographic Testing
C. Magnetic Particle Testing
D. Eddy Current Testing
Correct Answer: C. Magnetic Particle Testing
,Rationale: Magnetic Particle Testing (MT) is highly effective for
locating surface and near-surface discontinuities in
ferromagnetic materials.
3. Which property is required for a material to be inspected
using Magnetic Particle Testing?
A. Conductivity
B. Transparency
C. Ferromagnetism
D. Elasticity
Correct Answer: C. Ferromagnetism
Rationale: MT relies on magnetic fields and therefore only
works on ferromagnetic materials.
4. In Ultrasonic Testing, sound waves above what frequency
are typically used?
A. 20 Hz
B. 200 Hz
C. 2 kHz
D. 20 kHz
Correct Answer: D. 20 kHz
Rationale: Ultrasonic Testing uses frequencies above the
audible range, generally above 20 kHz and often in the MHz
range.
, 5. Which NDT method uses X-rays or gamma rays?
A. Visual Testing
B. Radiographic Testing
C. Acoustic Emission Testing
D. Leak Testing
Correct Answer: B. Radiographic Testing
Rationale: RT employs ionizing radiation to produce images of
internal structures and discontinuities.
6. What is a discontinuity?
A. A guaranteed defect
B. An interruption in material structure
C. A testing instrument
D. A calibration block
Correct Answer: B. An interruption in material structure
Rationale: A discontinuity is any interruption in the normal
physical structure of a material and may or may not be a defect.
7. Which NDT method is commonly considered the foundation
of all inspections?
A. Visual Testing
B. Radiography
CERTIFICATION EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2026
|INSTANT DOWNLOAD PDF
1. What is the primary purpose of Non-Destructive Testing
(NDT)?
A. To improve product appearance
B. To evaluate materials without causing damage
C. To destroy defective components
D. To increase production speed
Correct Answer: B. To evaluate materials without causing
damage
Rationale: NDT methods allow inspection and evaluation of
materials, components, and structures without impairing their
future usefulness.
2. Which NDT method is best suited for detecting surface
cracks in ferromagnetic materials?
A. Ultrasonic Testing
B. Radiographic Testing
C. Magnetic Particle Testing
D. Eddy Current Testing
Correct Answer: C. Magnetic Particle Testing
,Rationale: Magnetic Particle Testing (MT) is highly effective for
locating surface and near-surface discontinuities in
ferromagnetic materials.
3. Which property is required for a material to be inspected
using Magnetic Particle Testing?
A. Conductivity
B. Transparency
C. Ferromagnetism
D. Elasticity
Correct Answer: C. Ferromagnetism
Rationale: MT relies on magnetic fields and therefore only
works on ferromagnetic materials.
4. In Ultrasonic Testing, sound waves above what frequency
are typically used?
A. 20 Hz
B. 200 Hz
C. 2 kHz
D. 20 kHz
Correct Answer: D. 20 kHz
Rationale: Ultrasonic Testing uses frequencies above the
audible range, generally above 20 kHz and often in the MHz
range.
, 5. Which NDT method uses X-rays or gamma rays?
A. Visual Testing
B. Radiographic Testing
C. Acoustic Emission Testing
D. Leak Testing
Correct Answer: B. Radiographic Testing
Rationale: RT employs ionizing radiation to produce images of
internal structures and discontinuities.
6. What is a discontinuity?
A. A guaranteed defect
B. An interruption in material structure
C. A testing instrument
D. A calibration block
Correct Answer: B. An interruption in material structure
Rationale: A discontinuity is any interruption in the normal
physical structure of a material and may or may not be a defect.
7. Which NDT method is commonly considered the foundation
of all inspections?
A. Visual Testing
B. Radiography
