EQUIPMENT OPERATION - X RAY TUBE
(MULTIPLE CHOICE QUESTIONS) AND
COMPLETE SOLUTIONS UPDATED 2026
What causes most x-ray tube failures?
✔✔ Answer: Excessive heat
What type of motor drives the rotating anode?
✔✔ Answer: Induction motor
Which part of the x-ray tube contains the filament wires and focusing cup?
✔✔ Answer: Cathode
When kilovoltage is applied, electrons are accelerated toward which part of the x-
ray tube?
✔✔ Answer: Anode
Which exposure combination produces the least load on an x-ray tube?
✔✔ Answer: Low kVp, low mAs (or overall low exposure factors reduce tube
loading)
Which of the following are required properties of target metal in an X-ray tube?
1. Ability to conduct heat
2. High atomic number
3. High melting point
✔✔ Answer: 1, 2, and 3
What is the area of the x-ray target called that is struck by electrons? -ANSWER
✔✔Actual focal spot
, When electrons strike the target of an x-ray tube, most of their energy is converted
to what? -ANSWER ✔✔Heat
Which of the following is the negative terminal of the x-ray tube? -ANSWER
✔✔Cathode
What are x-ray tubes called that have two filament wires? -ANSWER ✔✔Dual
focus tubes
What used to focus the electron stream toward the target of the anode? -ANSWER
✔✔Focusing cup7
Electrons travel in an x-ray tube from _____ to _____ -ANSWER ✔✔Cathode,
anode
Which of the following is the filtration that is manufactured into the x-ray tube? -
ANSWER ✔✔Inherent filtration
What determines the quantity of electrons that will be accelerated acror the x-ray
tube? -ANSWER ✔✔Heating of the filament
During thermionic emission cloud of electrons surround the filament. What is this
electron cloud called? -ANSWER ✔✔Space charge
used properly, will an x-ray tube last forever? -ANSWER ✔✔No, the filament
wire will break
(MULTIPLE CHOICE QUESTIONS) AND
COMPLETE SOLUTIONS UPDATED 2026
What causes most x-ray tube failures?
✔✔ Answer: Excessive heat
What type of motor drives the rotating anode?
✔✔ Answer: Induction motor
Which part of the x-ray tube contains the filament wires and focusing cup?
✔✔ Answer: Cathode
When kilovoltage is applied, electrons are accelerated toward which part of the x-
ray tube?
✔✔ Answer: Anode
Which exposure combination produces the least load on an x-ray tube?
✔✔ Answer: Low kVp, low mAs (or overall low exposure factors reduce tube
loading)
Which of the following are required properties of target metal in an X-ray tube?
1. Ability to conduct heat
2. High atomic number
3. High melting point
✔✔ Answer: 1, 2, and 3
What is the area of the x-ray target called that is struck by electrons? -ANSWER
✔✔Actual focal spot
, When electrons strike the target of an x-ray tube, most of their energy is converted
to what? -ANSWER ✔✔Heat
Which of the following is the negative terminal of the x-ray tube? -ANSWER
✔✔Cathode
What are x-ray tubes called that have two filament wires? -ANSWER ✔✔Dual
focus tubes
What used to focus the electron stream toward the target of the anode? -ANSWER
✔✔Focusing cup7
Electrons travel in an x-ray tube from _____ to _____ -ANSWER ✔✔Cathode,
anode
Which of the following is the filtration that is manufactured into the x-ray tube? -
ANSWER ✔✔Inherent filtration
What determines the quantity of electrons that will be accelerated acror the x-ray
tube? -ANSWER ✔✔Heating of the filament
During thermionic emission cloud of electrons surround the filament. What is this
electron cloud called? -ANSWER ✔✔Space charge
used properly, will an x-ray tube last forever? -ANSWER ✔✔No, the filament
wire will break
