Rad Physics Exam 3
1. Which of the following produces the highest characteristic
x-ray energy level.: K-shell interaction.
2. When projectile electrons interact with the anode, most of
their kinetic energy is converted into what.: heat.
3. The protective housing tube....: Reduces leakage radiation,
provides mechan- ical support for the tube, and protects against
electric shock.
4. The two main parts to the cathode are:: the filament and the
focusing cup.
5. Filament composition generally consists of:: A thorium and
tungsten alloy
6. x-rays are produced when high-energy electrons strike the
atoms of the....-
: anode
7. occurs when projectile electrons bounce off
the focal spot and land on other areas of the target.: off-focus
and extra focal radiation
8. When mAs is increased....: x-ray quantity increases.
9. When tube filtration is increased...: x-ray quantity decreases.
, 10. This type of x-ray interaction with matter occurs
throughout diagnostic range.: photoelectric effect.
11. occupational radiation dose is generally due to: Compton
scattering
12. An ion pair consists of: a positively charged atom and a
negatively charged ejected electron
13. The line focus principle refers to...: a smaller effective focal
spot size than the actual focal spot size.
14. Electrons in the outermost shell from the nucleus have....:
the least binding energy
15. The space charge is: the collection of projectile electrons in
the vicinity of the filament before kilovoltage is applied to
accelerate them across the tube.
16. The charge of the focusing cup is: negative
17. Quantity of x-ray photons produced is directly
proportional to....: mA
18. Modern x-ray equipment uses a timer to control
the length of the exposure: electronic
19. timers measure the quantity of radiation
reaching the image receptor and terminate the exposure
when enough radiation is received to provide the required
optical density: Automatic Exposure control
1. Which of the following produces the highest characteristic
x-ray energy level.: K-shell interaction.
2. When projectile electrons interact with the anode, most of
their kinetic energy is converted into what.: heat.
3. The protective housing tube....: Reduces leakage radiation,
provides mechan- ical support for the tube, and protects against
electric shock.
4. The two main parts to the cathode are:: the filament and the
focusing cup.
5. Filament composition generally consists of:: A thorium and
tungsten alloy
6. x-rays are produced when high-energy electrons strike the
atoms of the....-
: anode
7. occurs when projectile electrons bounce off
the focal spot and land on other areas of the target.: off-focus
and extra focal radiation
8. When mAs is increased....: x-ray quantity increases.
9. When tube filtration is increased...: x-ray quantity decreases.
, 10. This type of x-ray interaction with matter occurs
throughout diagnostic range.: photoelectric effect.
11. occupational radiation dose is generally due to: Compton
scattering
12. An ion pair consists of: a positively charged atom and a
negatively charged ejected electron
13. The line focus principle refers to...: a smaller effective focal
spot size than the actual focal spot size.
14. Electrons in the outermost shell from the nucleus have....:
the least binding energy
15. The space charge is: the collection of projectile electrons in
the vicinity of the filament before kilovoltage is applied to
accelerate them across the tube.
16. The charge of the focusing cup is: negative
17. Quantity of x-ray photons produced is directly
proportional to....: mA
18. Modern x-ray equipment uses a timer to control
the length of the exposure: electronic
19. timers measure the quantity of radiation
reaching the image receptor and terminate the exposure
when enough radiation is received to provide the required
optical density: Automatic Exposure control
