Texas Industrial Radiographer
Certification Practice Exam Questions
And Correct Answers (Verified Answers)
Plus Rationales 2025|2026 Q&A |
Instant Download Pdf
1. What is the primary purpose of shielding in radiographic work?
A. Enhance image clarity
B. Protect personnel from radiation
C. Increase film exposure
D. Decrease equipment cost
Shielding reduces exposure to radiation for personnel and the
environment.
2. What type of radiation is used in industrial radiography?
A. Infrared
B. Gamma and X-rays
C. Ultraviolet
D. Microwave
Industrial radiography uses gamma and X-rays to penetrate
materials and create images.
,3. What unit is used to measure radiation dose equivalent?
A. Gray
B. Sievert
C. Becquerel
D. Curie
The sievert (Sv) measures the biological effect of radiation exposure.
4. Which radioactive isotope is commonly used in industrial radiography?
A. Cesium-137
B. Uranium-238
C. Iridium-192
D. Iodine-131
Iridium-192 is frequently used because of its suitable energy and
half-life.
5. What is the half-life of Iridium-192?
A. 3 years
B. 74 days
C. 10 years
D. 365 days
Iridium-192 has a half-life of approximately 74 days, making it ideal
for short-term use.
6. The ALARA principle encourages workers to:
A. Avoid using radiation
B. Wear only gloves
C. Increase film density
D. Minimize exposure as low as reasonably achievable
ALARA ensures radiation exposure is kept at the minimum necessary
level.
7. Which of the following is NOT a required component of a radiographic
exposure device?
, A. Source housing
B. Remote control
C. Personal dosimeter
D. Guide tube
While essential for safety, the dosimeter is worn by the operator, not
part of the device.
8. The most effective method for controlling external radiation exposure
is:
A. Increasing exposure time
B. Increasing distance from the source
C. Reducing shielding
D. Using a weaker source
Distance greatly reduces exposure due to the inverse square law.
9. A survey meter is used to:
A. Develop film
B. Measure radiation levels
C. Repair sources
D. Monitor temperature
Survey meters detect and measure radiation intensity in an area.
10. A film badge is an example of:
A. Shielding
B. A dosimeter
C. A radiographic device
D. A distance control
Film badges track accumulated radiation exposure for workers.
11. The radiation symbol (trefoil) must be:
A. Green and black
B. Magenta or black on yellow background
C. Red and blue
Certification Practice Exam Questions
And Correct Answers (Verified Answers)
Plus Rationales 2025|2026 Q&A |
Instant Download Pdf
1. What is the primary purpose of shielding in radiographic work?
A. Enhance image clarity
B. Protect personnel from radiation
C. Increase film exposure
D. Decrease equipment cost
Shielding reduces exposure to radiation for personnel and the
environment.
2. What type of radiation is used in industrial radiography?
A. Infrared
B. Gamma and X-rays
C. Ultraviolet
D. Microwave
Industrial radiography uses gamma and X-rays to penetrate
materials and create images.
,3. What unit is used to measure radiation dose equivalent?
A. Gray
B. Sievert
C. Becquerel
D. Curie
The sievert (Sv) measures the biological effect of radiation exposure.
4. Which radioactive isotope is commonly used in industrial radiography?
A. Cesium-137
B. Uranium-238
C. Iridium-192
D. Iodine-131
Iridium-192 is frequently used because of its suitable energy and
half-life.
5. What is the half-life of Iridium-192?
A. 3 years
B. 74 days
C. 10 years
D. 365 days
Iridium-192 has a half-life of approximately 74 days, making it ideal
for short-term use.
6. The ALARA principle encourages workers to:
A. Avoid using radiation
B. Wear only gloves
C. Increase film density
D. Minimize exposure as low as reasonably achievable
ALARA ensures radiation exposure is kept at the minimum necessary
level.
7. Which of the following is NOT a required component of a radiographic
exposure device?
, A. Source housing
B. Remote control
C. Personal dosimeter
D. Guide tube
While essential for safety, the dosimeter is worn by the operator, not
part of the device.
8. The most effective method for controlling external radiation exposure
is:
A. Increasing exposure time
B. Increasing distance from the source
C. Reducing shielding
D. Using a weaker source
Distance greatly reduces exposure due to the inverse square law.
9. A survey meter is used to:
A. Develop film
B. Measure radiation levels
C. Repair sources
D. Monitor temperature
Survey meters detect and measure radiation intensity in an area.
10. A film badge is an example of:
A. Shielding
B. A dosimeter
C. A radiographic device
D. A distance control
Film badges track accumulated radiation exposure for workers.
11. The radiation symbol (trefoil) must be:
A. Green and black
B. Magenta or black on yellow background
C. Red and blue
