LMRT Assessment Tests Questions &
Answers 2023/2024
. What type of current is required for proper operation of the x-ray tube? - ANSWER-Direct
Electromagnetic radiation travels: - ANSWER-In waves along a straight path
Frequency is defined as: - ANSWER-The number of waves passing a point per unit time
Wavelength is defined as the distance from: - ANSWER-Peak to peak of the wave
Wavelength and frequency are: - ANSWER-Inversely proportional to each other
The x-ray beam changes as it travels through the patient by a process called: - ANSWER-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: - ANSWER-inverse square law
Electricity is supplied to the imaging department by a: - ANSWER-Generator
High-frequency power: - ANSWER-Has almost no ripple
The primary advantage of three-phase power is that: - ANSWER-Voltage never drops to zero
A variable transformer that is used to select kVp for the x-ray circuit is the: - ANSWER-Autotransformer
A transformer that has more turns in the secondary coil than in the primary coil is called a: - ANSWER-
Step-up transformer
, What is the transformer used to boost voltage to kilovoltage levels called? - ANSWER-Step-up
transformer
Voltage coming to the x-ray machine is kept constant through the use of a(n): - ANSWER-Line voltage
compensator
A step-down transformer: - ANSWER-Steps down voltage
Where does thermionic emission occur? - ANSWER-Cathode
. Which of the following devices is prereading? - ANSWER-kVp meter
Which device reduces voltage and provides current to produce an electron cloud or space charge at the
filament? - ANSWER-Step-down transformer
What changes AC to DC? - ANSWER-Rectifier
Which of the following is surrounded by a negatively charged focusing cup? - ANSWER-Filament
Which of the following is composed of solid-state silicon-based diodes? - ANSWER-rectifier
What regulates the duration of x-ray production? - ANSWER-Timer
What is located in the x-ray circuit between the high-voltage transformer and the x-ray tube? - ANSWER-
Rectifier
Which of the following measures tube current? - ANSWER-mA meter
What device spins at 10,000-12,000 rpm? - ANSWER-Anode
Answers 2023/2024
. What type of current is required for proper operation of the x-ray tube? - ANSWER-Direct
Electromagnetic radiation travels: - ANSWER-In waves along a straight path
Frequency is defined as: - ANSWER-The number of waves passing a point per unit time
Wavelength is defined as the distance from: - ANSWER-Peak to peak of the wave
Wavelength and frequency are: - ANSWER-Inversely proportional to each other
The x-ray beam changes as it travels through the patient by a process called: - ANSWER-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: - ANSWER-inverse square law
Electricity is supplied to the imaging department by a: - ANSWER-Generator
High-frequency power: - ANSWER-Has almost no ripple
The primary advantage of three-phase power is that: - ANSWER-Voltage never drops to zero
A variable transformer that is used to select kVp for the x-ray circuit is the: - ANSWER-Autotransformer
A transformer that has more turns in the secondary coil than in the primary coil is called a: - ANSWER-
Step-up transformer
, What is the transformer used to boost voltage to kilovoltage levels called? - ANSWER-Step-up
transformer
Voltage coming to the x-ray machine is kept constant through the use of a(n): - ANSWER-Line voltage
compensator
A step-down transformer: - ANSWER-Steps down voltage
Where does thermionic emission occur? - ANSWER-Cathode
. Which of the following devices is prereading? - ANSWER-kVp meter
Which device reduces voltage and provides current to produce an electron cloud or space charge at the
filament? - ANSWER-Step-down transformer
What changes AC to DC? - ANSWER-Rectifier
Which of the following is surrounded by a negatively charged focusing cup? - ANSWER-Filament
Which of the following is composed of solid-state silicon-based diodes? - ANSWER-rectifier
What regulates the duration of x-ray production? - ANSWER-Timer
What is located in the x-ray circuit between the high-voltage transformer and the x-ray tube? - ANSWER-
Rectifier
Which of the following measures tube current? - ANSWER-mA meter
What device spins at 10,000-12,000 rpm? - ANSWER-Anode
