LMRT Assessment Test Questions With Verified Answers.
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Course
LMRT
Institution
LMRT
olid-state silicon-based diodes? - answerrectifier
What regulates the duration of x-ray production? - answerTimer
What is located in the x-ray circuit between the high-voltage transformer and the x-ray tube? -
answerRectifier
Which of the following measures tube current? - answermA meter
What ...
LMRT Assessment Test Questions With
Verified Answers.
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
What device uses maximum heat storage ability of the tube to deliver mAs? - answer✔Falling
load generator
What is the source of bremsstrahlung and characteristic rays? - answer✔anode
What device is turned by a rotor? - answer✔anode
The process of thermionic emission causes: - answer✔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. - answer✔Kilovoltage
Most of the energy conversion in the x-ray tube produces: - answer✔Heat
X-rays are produced as incident electrons are slowed going past the nuclei of target atoms by a
process called: - answer✔Bremsstrahlung
. X-rays are produced as incident electrons collide with inner shell electrons in target atoms by a
process called: - answer✔Characteristic
What percentage of energy in the x-ray tube is converted to x-rays? - answer✔1%
The x-ray beam is: - answer✔Heterogeneous or polyenergetic—consisting of many different
energies (wavelengths)
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