HEMISPHERES 3.0 LEVEL VII DISCHARGE
& PREVENTION EXAM QUESTIONS WITH
CORRECT ANSWERS
1. Describe how lead foil affects the quality of a radiographic image.
Lead foil enhances the clarity of the image by increasing exposure
time.
Lead foil increases film density, resulting in a darker image.
Lead foil has no effect on the quality of the radiographic image.
Lead foil decreases the contrast of the radiographic image by
absorbing some of the primary radiation.
2. What is the recommended focal spot size to minimize geometric
unsharpness in radiographic testing?
A large focal spot to increase exposure
A variable focal spot depending on the material
A fixed focal spot size for all tests
As small a focal spot as other considerations will allow
3. What is the correct formula used to calculate the permissible accumulated
personnel dose in radiographic testing?
12 (N – 18)
18 (5 + N)
5 (N – 18)
, 12 (N + 18)
4. What is the primary effect of lead screens on radiographic film during
exposure?
Increased the photographic action on the film largely by reason
of the electron emission and partly by the secondary X-Rays
, generated in the lead
Absorb the shorter wavelength scattered radiation more than the
long wavelength primary radiation
Intensify the photographic effect of the scatter radiation more than
that of the primary radiation
None of the above
5. What is the primary purpose of a penetrameter in radiographic testing?
Amount of film contrast
Quality of the radiographic technique
Size of discontinuities in a part
Density of the film
6. Which metal is primarily responsible for forming the image on X-ray film?
Tin
Iron
Silver
Tungsten
7. What is the relationship between tube current and exposure time in
radiographic testing?
Exposure time is constant regardless of tube current.
Tube current and exposure time are unrelated in radiographic
testing.
As tube current increases, exposure time increases to maintain
radiographic quality.
As tube current increases, exposure time decreases to maintain
radiographic quality.
, 8. Describe the significance of maintaining the correct temperature range
during the manual processing of radiographic film.
Maintaining the correct temperature range ensures optimal film
development and image quality.
It is only important for digital film processing.
It prevents the film from being exposed to radiation.
It allows for faster processing times without affecting quality.
9. Why is remote handling equipment preferred for high-intensity gamma ray
sources in radiography?
It is less expensive than protective clothing.
It increases the speed of the radiography process.
It allows for more precise positioning of the source.
It minimizes radiation exposure to personnel.
10. What is the expected outcome of developing a radiograph at 14 °C for 5
minutes?
Fogged
Damaged by frilling
Overdeveloped
Underdeveloped
11. In a scenario where a radiation worker needs to monitor their exposure
during a long shift, which dosimeter would be most appropriate and why?
A film badge, because it is less expensive.
A survey meter, because it measures radiation levels in the
environment.
& PREVENTION EXAM QUESTIONS WITH
CORRECT ANSWERS
1. Describe how lead foil affects the quality of a radiographic image.
Lead foil enhances the clarity of the image by increasing exposure
time.
Lead foil increases film density, resulting in a darker image.
Lead foil has no effect on the quality of the radiographic image.
Lead foil decreases the contrast of the radiographic image by
absorbing some of the primary radiation.
2. What is the recommended focal spot size to minimize geometric
unsharpness in radiographic testing?
A large focal spot to increase exposure
A variable focal spot depending on the material
A fixed focal spot size for all tests
As small a focal spot as other considerations will allow
3. What is the correct formula used to calculate the permissible accumulated
personnel dose in radiographic testing?
12 (N – 18)
18 (5 + N)
5 (N – 18)
, 12 (N + 18)
4. What is the primary effect of lead screens on radiographic film during
exposure?
Increased the photographic action on the film largely by reason
of the electron emission and partly by the secondary X-Rays
, generated in the lead
Absorb the shorter wavelength scattered radiation more than the
long wavelength primary radiation
Intensify the photographic effect of the scatter radiation more than
that of the primary radiation
None of the above
5. What is the primary purpose of a penetrameter in radiographic testing?
Amount of film contrast
Quality of the radiographic technique
Size of discontinuities in a part
Density of the film
6. Which metal is primarily responsible for forming the image on X-ray film?
Tin
Iron
Silver
Tungsten
7. What is the relationship between tube current and exposure time in
radiographic testing?
Exposure time is constant regardless of tube current.
Tube current and exposure time are unrelated in radiographic
testing.
As tube current increases, exposure time increases to maintain
radiographic quality.
As tube current increases, exposure time decreases to maintain
radiographic quality.
, 8. Describe the significance of maintaining the correct temperature range
during the manual processing of radiographic film.
Maintaining the correct temperature range ensures optimal film
development and image quality.
It is only important for digital film processing.
It prevents the film from being exposed to radiation.
It allows for faster processing times without affecting quality.
9. Why is remote handling equipment preferred for high-intensity gamma ray
sources in radiography?
It is less expensive than protective clothing.
It increases the speed of the radiography process.
It allows for more precise positioning of the source.
It minimizes radiation exposure to personnel.
10. What is the expected outcome of developing a radiograph at 14 °C for 5
minutes?
Fogged
Damaged by frilling
Overdeveloped
Underdeveloped
11. In a scenario where a radiation worker needs to monitor their exposure
during a long shift, which dosimeter would be most appropriate and why?
A film badge, because it is less expensive.
A survey meter, because it measures radiation levels in the
environment.
