1 | Page
LMRT Assessment Tests Questions
and Answers Latest 2026
. What type of current is required for proper operation of
the x-ray tube? Ans: Direct
Electromagnetic radiation travels: Ans: In waves along a
straight path
Frequency is defined as: Ans: The number of waves
passing a point per unit time
Wavelength is defined as the distance from: Ans: Peak to
peak of the wave
Wavelength and frequency are: Ans: Inversely
proportional to each other
The x-ray beam changes as it travels through the patient
by a process called: Ans: Attenuation
The intensity of radiation is inversely proportional to the
square of the distance between the source of radiation
and the person receiving it. This describes the: Ans:
inverse square law
Electricity is supplied to the imaging department by a:
Ans: Generator
High-frequency power: Ans: Has almost no ripple
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The primary advantage of three-phase power is that: Ans:
Voltage never drops to zero
A variable transformer that is used to select kVp for the
x-ray circuit is the: Ans: Autotransformer
A transformer that has more turns in the secondary coil
than in the primary coil is called a: Ans: Step-up
transformer
What is the transformer used to boost voltage to
kilovoltage levels called? Ans: Step-up transformer
Voltage coming to the x-ray machine is kept constant
through the use of a(n): Ans: Line voltage compensator
A step-down transformer: Ans: Steps down voltage
Where does thermionic emission occur? Ans: Cathode
. Which of the following devices is prereading? Ans: kVp
meter
Which device reduces voltage and provides current to
produce an electron cloud or space charge at the
filament? Ans: Step-down transformer
What changes AC to DC? Ans: Rectifier
Which of the following is surrounded by a negatively
charged focusing cup? Ans: Filament
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Which of the following is composed of solid-state silicon-
based diodes? Ans: rectifier
What regulates the duration of x-ray production? Ans:
Timer
What is located in the x-ray circuit between the high-
voltage transformer and the x-ray tube? Ans: Rectifier
Which of the following measures tube current? Ans: mA
meter
What device spins at 10,000-12,000 rpm? Ans: Anode
What device uses maximum heat storage ability of the
tube to deliver mAs? Ans: Falling load generator
What is the source of bremsstrahlung and characteristic
rays? Ans: anode
What device is turned by a rotor? Ans: anode
The process of thermionic emission causes: Ans:
Electrons to boil off the filament
The force with which the electron stream passes from
cathode to anode is a result of _____ passing through the
x-ray tube. Ans: Kilovoltage
Most of the energy conversion in the x-ray tube produces:
Ans: Heat
© 2025 All rights reserved
LMRT Assessment Tests Questions
and Answers Latest 2026
. What type of current is required for proper operation of
the x-ray tube? Ans: Direct
Electromagnetic radiation travels: Ans: In waves along a
straight path
Frequency is defined as: Ans: The number of waves
passing a point per unit time
Wavelength is defined as the distance from: Ans: Peak to
peak of the wave
Wavelength and frequency are: Ans: Inversely
proportional to each other
The x-ray beam changes as it travels through the patient
by a process called: Ans: Attenuation
The intensity of radiation is inversely proportional to the
square of the distance between the source of radiation
and the person receiving it. This describes the: Ans:
inverse square law
Electricity is supplied to the imaging department by a:
Ans: Generator
High-frequency power: Ans: Has almost no ripple
© 2025 All rights reserved
, 2 | Page
The primary advantage of three-phase power is that: Ans:
Voltage never drops to zero
A variable transformer that is used to select kVp for the
x-ray circuit is the: Ans: Autotransformer
A transformer that has more turns in the secondary coil
than in the primary coil is called a: Ans: Step-up
transformer
What is the transformer used to boost voltage to
kilovoltage levels called? Ans: Step-up transformer
Voltage coming to the x-ray machine is kept constant
through the use of a(n): Ans: Line voltage compensator
A step-down transformer: Ans: Steps down voltage
Where does thermionic emission occur? Ans: Cathode
. Which of the following devices is prereading? Ans: kVp
meter
Which device reduces voltage and provides current to
produce an electron cloud or space charge at the
filament? Ans: Step-down transformer
What changes AC to DC? Ans: Rectifier
Which of the following is surrounded by a negatively
charged focusing cup? Ans: Filament
© 2025 All rights reserved
, 3 | Page
Which of the following is composed of solid-state silicon-
based diodes? Ans: rectifier
What regulates the duration of x-ray production? Ans:
Timer
What is located in the x-ray circuit between the high-
voltage transformer and the x-ray tube? Ans: Rectifier
Which of the following measures tube current? Ans: mA
meter
What device spins at 10,000-12,000 rpm? Ans: Anode
What device uses maximum heat storage ability of the
tube to deliver mAs? Ans: Falling load generator
What is the source of bremsstrahlung and characteristic
rays? Ans: anode
What device is turned by a rotor? Ans: anode
The process of thermionic emission causes: Ans:
Electrons to boil off the filament
The force with which the electron stream passes from
cathode to anode is a result of _____ passing through the
x-ray tube. Ans: Kilovoltage
Most of the energy conversion in the x-ray tube produces:
Ans: Heat
© 2025 All rights reserved
