Ducky
What is the primary purpose of NDT?
A) To test materials without damaging them
B) To test the strength of materials by breaking them
C) To remove defects from materials
D) To change the properties of materials
What is the primary purpose of NDT?
A) To test materials without damaging them
2. Which of the following is a key advantage of NDT?
A) It’s destructive
B) It leaves the material unchanged
C) It’s slower than destructive testing
D) It always requires expensive equipment
2. Which of the following is a key advantage of NDT?
B) It leaves the material unchanged
3. Which of these is NOT a common NDT method?
A) Ultrasonic Testing (UT)
B) Radiographic Testing (RT)
C) Tensile Testing
D) Magnetic Particle Testing (MT)
3. Which of these is NOT a common NDT method?
C) Tensile Testing
4. In which industries is NDT commonly used?
A) Aerospace
B) Food processing
C) Textiles
D) Agriculture
4. In which industries is NDT commonly used?
A) Aerospace
Ultrasonic Testing (UT) works by:
A) Emitting radiation to detect defects
B) Using magnetic fields to identify cracks
C) Sending high-frequency sound waves into the material
D) Applying electric current to detect surface cracks
6. Ultrasonic Testing (UT) works by:
C) Sending high-frequency sound waves into the material
6. What material is often used as a standard for calibration of an ultrasonic thickness gauge?
A) Rubber
B) Steel
C) Wood
D) Glass
6. What material is often used as a standard for calibration of an ultrasonic thickness gauge?
B) Steel
7. Why is couplant used in ultrasonic thickness measurement?
A) To clean the surface
B) To increase surface reflectivity
C) To facilitate sound wave transmission between the probe and the test material
D) To cool the probe during testing
7. Why is couplant used in ultrasonic thickness measurement?
C) To facilitate sound wave transmission between the probe and the test material (Correct)
9. What type of transducer is typically used for ultrasonic thickness gauges?
A) Piezoelectric transducers
B) Phototransistors
C) Electromagnetic coils
D) Thermal sensors
9. What type of transducer is typically used for ultrasonic thickness gauges?
A) Piezoelectric transducers
11. What safety precaution is critical when using Radiographic Testing?
A) Wearing thermal insulation
B) Using radiation shields and maintaining a safe distance
C) Wearing noise-canceling headphones
D) Avoiding electric currents
11. What safety precaution is critical when using Radiographic Testing?
B) Using radiation shields and maintaining a safe distance
14. In Magnetic Particle Testing, defects are revealed by:
A) Absorption of radiation
B) Disruption of magnetic fields
C) Transmission of sound waves
D) Changes in color
14. In Magnetic Particle Testing, defects are revealed by:
B) Disruption of magnetic fields
14. What is the typical frequency range of sound waves used in ultrasonic thickness testing?
A) 100 - 500 Hz
B) 1 - 10 kHz
C) 1 - 10 MHz
D) 100 MHz - 1 GHz
14. What is the typical frequency range of sound waves used in ultrasonic thickness testing?
C) 1 - 10 MHz
In which of the following materials might ultrasonic thickness measurement be less accurate?
A) Steel
B) Rubber
C) Aluminum
D) Titanium
In which of the following materials might ultrasonic thickness measurement be less accurate?
B) Rubber
20. Eddy Current Testing (ET) is based on:
A) Inducing magnetic fields
B) Producing sound waves
C) Emitting radiation
D) Generating electric currents in conductive materials
20. Eddy Current Testing (ET) is based on:
D) Generating electric currents in conductive materials
19. How can you ensure the longevity of the ultrasonic thickness gauge equipment?
A) Store it in a cool, dry place
B) Regularly calibrate and clean the transducer
C) Use the correct couplant
D) All of the above
19. How can you ensure the longevity of the ultrasonic thickness gauge equipment?
D) All of the above (Correct)
12. What happens to the ultrasound waves when they encounter a flaw or defect in the material?
A) They are absorbed by the material
B) They pass through unchanged
C) They are reflected back to the transducer earlier than expected
D) They scatter in all directions
12. What happens to the ultrasound waves when they encounter a flaw or defect in the material?
C) They are reflected back to the transducer earlier than expected (Correct)