RADT 1085 Chapter 5 Exam Questions and Answers All Correct
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Module
RADT 1085
Institution
RADT 1085
RADT 1085 Chapter 5 Exam Questions and Answers All Correct
Where is the power of the x ray imaging system first delivered to? - Answer-the autotransformer
What principle does the autotransformer work on? - Answer-electromagnetic induction
The autotransformer has one ___________ and one ____...
RADT 1085 Chapter 5 Exam Questions
and Answers All Correct
Where is the power of the x ray imaging system first delivered to? - Answer-the
autotransformer
What principle does the autotransformer work on? - Answer-electromagnetic induction
The autotransformer has one ___________ and one _________ - Answer-winding
core
Which side is the kvp selector on? - Answer-the output side
What are the 2 kVp controls? - Answer-kvp minor and kvp major
Where does the output voltage go? - Answer-the input side and of the step up
transformer
Filament circuit - Answer-........
What is thermionic emission based on? - Answer-temperature of the filament
What is it measured in? - Answer-amperes
Filaments operate at how many amps and how many volts? - Answer-3-6 amps
6-12 volts
Voltage from the mA station is delivered to the ______________ transformer which is a
step _________ - Answer-filament
down
A lower voltage means a ___________ current to the filament - Answer-higher
What determines how many xrays are created? - Answer-number of electrons
number of electrons is determined by the temperature of the filament. the hotter the
filament the more electrons
mA meter measures xray tube__________ - Answer-current
Exposure timers - Answer-........
, The timer circuit is _____________ from other main circuits - Answer-seperated
Exposure timer is a ___________ device - Answer-electronic
What is the main action of the exposure timer? - Answer-to make and break the high
voltage across the xray tube
Where in the circuit is this done? - Answer-on the primary side of the high voltage
transformer
What are the 4 types of exposure timers? - Answer-Synchronous timers
Electric timers
mAs timers
AEC
Synchronous timer - Answer-mechanical device
special type of electric motor
Electronic timers - Answer-electronic device
allow a wide range of time intervals
mAs timers - Answer-electronic device
monitors the product of mA and exposure time
-mAs
mAs timers terminate the exposure when.... - Answer-mAs value is reached
Where is the mAs timer located? - Answer-on the secondary side of the high voltage
transformer
Why is the mAs timer designed? - Answer-to provide the highest mA for the shortest
exposure
Where are mAs timers used? - Answer-on falling load and capacitor discharge imaging
systems
AEC Control controls..... - Answer-time and not anything else
AEC measures.... - Answer-quantity of radiation reaching the IR
AEC automatically terminates when the IR has recieved.... - Answer-enough IR
exposure or desired film OD
What is the purpose of the backup? - Answer-to prevent over exposure if the AEC fails
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