Page |1
LMRT ARRT EXAM 2025| BRAND NEW ACTUAL
EXAM WITH 100% VERIFIED QUESTIONS AND
CORRECT SOLUTIONS| GUARANTEED VALUE
PACK| ACE YOUR GRADES.
1. Roentgen discovered x-rays while working with a _____ tube? - Correct
Answer-Crookes
2. An "electron cloud" surrounding the filament of the cathode is referred to
as a - Correct Answer-Space charge
3. Free electrons of X-ray production come from the - Correct Answer-
Filament
4. The creation of the space charge in the X-ray tube produces: - Correct
Answer-thermionic emission
5. The majority of photons in the X-ray beam are created by which
process? - Correct Answer-Bremsstrahlung interactions
6. More than 99% of the energy of the electron stream is converted into: -
Correct Answer-heat
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7. the high-speed rotation (10,000 rpm) of the anode enables - Correct
Answer-Greater dissipation of heat from high technical factors
8. The degree of angulation of the x-ray tube target will determine the: -
Correct Answer-size of the actual and effective focal spot
9. A dual-focus X-ray tube has:
1: Two filaments
2: Two focal spot sizes
3: Two anodes - Correct Answer-1 and 2
10. The anode heel effect is a phenomenon of X-ray production that
results in: - Correct Answer-Uneven distribution of radiation within the x-
ray field
11. The penetrating power of the X-ray beam is controlled by varying the
- Correct Answer-Peak kilovoltage (kVp)
12. The rate flow of current flow across the X-ray tube is measured in -
Correct Answer-mA
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13. Doubling the mA will result in
1: increased patient dose
2: twice as many photons in the X-ray beam
3: increased radiographic density - Correct Answer-1, 2, and 3
14. The unit used to indicate the total quantity of X-ray expose is -
Correct Answer-Millionsampere-seconds (mAs)
15. The device for removing long-wavelength radiation from the primary
X-ray beam is the - Correct Answer-Filter
16. X-ray equipment capable of producing 70 kVp or more is required to
have total filtration of at least: - Correct Answer-2.5 mm Al equiv
17. The purpose of rotating the anode of the X-ray tube is to - Correct
Answer-Increase the heat capacity of the anode
18. Image sharpness is determined by the - Correct Answer-Size of the
effective focal spot
LMRT ARRT EXAM 2025| BRAND NEW ACTUAL
EXAM WITH 100% VERIFIED QUESTIONS AND
CORRECT SOLUTIONS| GUARANTEED VALUE
PACK| ACE YOUR GRADES.
1. Roentgen discovered x-rays while working with a _____ tube? - Correct
Answer-Crookes
2. An "electron cloud" surrounding the filament of the cathode is referred to
as a - Correct Answer-Space charge
3. Free electrons of X-ray production come from the - Correct Answer-
Filament
4. The creation of the space charge in the X-ray tube produces: - Correct
Answer-thermionic emission
5. The majority of photons in the X-ray beam are created by which
process? - Correct Answer-Bremsstrahlung interactions
6. More than 99% of the energy of the electron stream is converted into: -
Correct Answer-heat
, Page |2
7. the high-speed rotation (10,000 rpm) of the anode enables - Correct
Answer-Greater dissipation of heat from high technical factors
8. The degree of angulation of the x-ray tube target will determine the: -
Correct Answer-size of the actual and effective focal spot
9. A dual-focus X-ray tube has:
1: Two filaments
2: Two focal spot sizes
3: Two anodes - Correct Answer-1 and 2
10. The anode heel effect is a phenomenon of X-ray production that
results in: - Correct Answer-Uneven distribution of radiation within the x-
ray field
11. The penetrating power of the X-ray beam is controlled by varying the
- Correct Answer-Peak kilovoltage (kVp)
12. The rate flow of current flow across the X-ray tube is measured in -
Correct Answer-mA
, Page |3
13. Doubling the mA will result in
1: increased patient dose
2: twice as many photons in the X-ray beam
3: increased radiographic density - Correct Answer-1, 2, and 3
14. The unit used to indicate the total quantity of X-ray expose is -
Correct Answer-Millionsampere-seconds (mAs)
15. The device for removing long-wavelength radiation from the primary
X-ray beam is the - Correct Answer-Filter
16. X-ray equipment capable of producing 70 kVp or more is required to
have total filtration of at least: - Correct Answer-2.5 mm Al equiv
17. The purpose of rotating the anode of the X-ray tube is to - Correct
Answer-Increase the heat capacity of the anode
18. Image sharpness is determined by the - Correct Answer-Size of the
effective focal spot
