NDT Level II Technician Examination
Questions and Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A |
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1. Which NDT method uses high-frequency sound waves to detect
internal flaws?
A. Radiographic Testing
B. Ultrasonic Testing
C. Liquid Penetrant Testing
D. Visual Testing
Answer: B
Ultrasonic Testing uses sound waves that reflect from discontinuities to
identify internal defects.
2. In radiographic testing, density variations on film indicate:
A. Surface roughness only
B. Material hardness
,C. Internal discontinuities
D. Magnetic fields
Answer: C
Density changes occur due to varying radiation absorption caused by
internal flaws.
3. What particle type is used in Magnetic Particle Testing?
A. Electrons
B. Protons
C. Ferromagnetic particles
D. Neutrons
Answer: C
Ferromagnetic particles are attracted to leakage fields at
discontinuities.
4. Liquid Penetrant Testing is primarily used to detect:
A. Subsurface cracks
B. Internal voids
C. Surface-breaking defects
D. Magnetic anomalies
,Answer: C
PT reveals only surface-breaking discontinuities through capillary
action.
5. Eddy Current Testing is based on:
A. Heat conduction
B. Electromagnetic induction
C. X-ray absorption
D. Sound wave reflection
Answer: B
ET uses induced currents in conductive materials to detect flaws.
6. Which radiation is commonly used in industrial radiography?
A. Infrared
B. Gamma rays
C. Microwaves
D. Radio waves
Answer: B
Gamma rays have high penetration power suitable for thick materials.
, 7. In ultrasonic testing, couplant is used to:
A. Increase radiation
B. Reduce sound loss at interface
C. Magnetize material
D. Develop film
Answer: B
Couplant eliminates air gaps and improves sound transmission.
8. A discontinuity that breaks the surface is called:
A. Inherent defect
B. Surface-breaking defect
C. Subsurface inclusion
D. Lamination
Answer: B
Surface-breaking defects are open to the surface and detectable by
PT/MT.
9. Which method requires a darkened environment and chemical
processing?
Questions and Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. Which NDT method uses high-frequency sound waves to detect
internal flaws?
A. Radiographic Testing
B. Ultrasonic Testing
C. Liquid Penetrant Testing
D. Visual Testing
Answer: B
Ultrasonic Testing uses sound waves that reflect from discontinuities to
identify internal defects.
2. In radiographic testing, density variations on film indicate:
A. Surface roughness only
B. Material hardness
,C. Internal discontinuities
D. Magnetic fields
Answer: C
Density changes occur due to varying radiation absorption caused by
internal flaws.
3. What particle type is used in Magnetic Particle Testing?
A. Electrons
B. Protons
C. Ferromagnetic particles
D. Neutrons
Answer: C
Ferromagnetic particles are attracted to leakage fields at
discontinuities.
4. Liquid Penetrant Testing is primarily used to detect:
A. Subsurface cracks
B. Internal voids
C. Surface-breaking defects
D. Magnetic anomalies
,Answer: C
PT reveals only surface-breaking discontinuities through capillary
action.
5. Eddy Current Testing is based on:
A. Heat conduction
B. Electromagnetic induction
C. X-ray absorption
D. Sound wave reflection
Answer: B
ET uses induced currents in conductive materials to detect flaws.
6. Which radiation is commonly used in industrial radiography?
A. Infrared
B. Gamma rays
C. Microwaves
D. Radio waves
Answer: B
Gamma rays have high penetration power suitable for thick materials.
, 7. In ultrasonic testing, couplant is used to:
A. Increase radiation
B. Reduce sound loss at interface
C. Magnetize material
D. Develop film
Answer: B
Couplant eliminates air gaps and improves sound transmission.
8. A discontinuity that breaks the surface is called:
A. Inherent defect
B. Surface-breaking defect
C. Subsurface inclusion
D. Lamination
Answer: B
Surface-breaking defects are open to the surface and detectable by
PT/MT.
9. Which method requires a darkened environment and chemical
processing?
