LMRT ARRT EXAM QUESTIONS AND
ANSWERS
Roentgen discovered x-rays while working with a _____ tube? -
correct answer ✅Crookes
An "electron cloud" surrounding the filament of the cathode is
referred to as a -
correct answer ✅Space charge
Free electrons of X-ray production come from the -
correct answer ✅Filament
The creation of the space charge in the X-ray tube produces: -
correct answer ✅thermionic emission
The majority of photons in the X-ray beam are created by which
process? -
correct answer ✅Bremsstrahlung interactions
More than 99% of the energy of the electron stream is converted
into: -
correct answer ✅heat
,LMRT ARRT EXAM QUESTIONS AND
ANSWERS
the high-speed rotation (10,000 rpm) of the anode enables -
correct answer ✅Greater dissipation of heat from high technical
factors
The degree of angulation of the x-ray tube target will determine
the: -
correct answer ✅size of the actual and effective focal spot
A dual-focus X-ray tube has:
1: Two filaments
2: Two focal spot sizes
3: Two anodes -
correct answer ✅1 and 2
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
, LMRT ARRT EXAM QUESTIONS AND
ANSWERS
The penetrating power of the X-ray beam is controlled by varying
the -
correct answer ✅Peak kilovoltage (kVp)
The rate flow of current flow across the X-ray tube is measured in -
correct answer ✅mA
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
The unit used to indicate the total quantity of X-ray expose is -
correct answer ✅Millionsampere-seconds (mAs)
The device for removing long-wavelength radiation from the
primary X-ray beam is the -
correct answer ✅Filter
ANSWERS
Roentgen discovered x-rays while working with a _____ tube? -
correct answer ✅Crookes
An "electron cloud" surrounding the filament of the cathode is
referred to as a -
correct answer ✅Space charge
Free electrons of X-ray production come from the -
correct answer ✅Filament
The creation of the space charge in the X-ray tube produces: -
correct answer ✅thermionic emission
The majority of photons in the X-ray beam are created by which
process? -
correct answer ✅Bremsstrahlung interactions
More than 99% of the energy of the electron stream is converted
into: -
correct answer ✅heat
,LMRT ARRT EXAM QUESTIONS AND
ANSWERS
the high-speed rotation (10,000 rpm) of the anode enables -
correct answer ✅Greater dissipation of heat from high technical
factors
The degree of angulation of the x-ray tube target will determine
the: -
correct answer ✅size of the actual and effective focal spot
A dual-focus X-ray tube has:
1: Two filaments
2: Two focal spot sizes
3: Two anodes -
correct answer ✅1 and 2
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
, LMRT ARRT EXAM QUESTIONS AND
ANSWERS
The penetrating power of the X-ray beam is controlled by varying
the -
correct answer ✅Peak kilovoltage (kVp)
The rate flow of current flow across the X-ray tube is measured in -
correct answer ✅mA
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
The unit used to indicate the total quantity of X-ray expose is -
correct answer ✅Millionsampere-seconds (mAs)
The device for removing long-wavelength radiation from the
primary X-ray beam is the -
correct answer ✅Filter
