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Radiology Physics Test

Enter the letter for the matching Answer
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1.
Rem
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2.
What is the purpose of an electric generator
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3.
What are the three basic parts of the high-voltage generator
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4.
What are two causes of tube failure
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5.
A single-phase power has how much voltage ripple
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6.
The autotransformer operates on what principle
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7.
What are the 3 main factors that characterize a simple circuit and their unit of measurement
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8.
Pair Production
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9.
Why is it important that the production of x-rays take place in a vacuum
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10.
Electron
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11.
Conductor
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12.
Doubling the optical density on a radiograph using kVp alone requires an increase of what percent
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13.
List three types of transformers
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14.
Beta particle
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15.
Examination tables are made of what strong, radiolucent material
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16.
Semiconductor
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17.
Properties of a photon
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18.
What are the five types of exposure timers
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19.
What is the purpose of an electric motor
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20.
Find frequency or wavelength
A.
Air can cause electrons to scatter, reducing the efficiency of the beam production
B.
Self-induction
C.
To convert electricity into mechanical energy
D.
To convert mechanical energy into electricity
E.
Voltage (Volts), Current (Amps) and Resistance (Ohms)
F.
Creates two electrons, + and -. Energy is absorbed by the nucleus, but it must be at least 1.02 MeV
G.
A material that under some conditions behaves as an insulator, and in other conditions, behaves as a conductor
H.
C= (wavelength)x(frquency)
I.
Closed-Core, Autotransformer and shell-type
J.
Frequency, wavelength, amplitude and velocity
K.
The emission of an electron from the nucleus that converts a neutron into a proton
L.
Any substance through which electrons flow easily
M.
Carbon Fiber
N.
15%
O.
100%
P.
High Voltage Transformer, Filament Transformer and Rectifiers
Q.
Manual, Mechanical, Synchronous, AEC and Electronic
R.
A small particle that usually orbits around the nucleus of an atom and has a negative charge
S.
Too much technique on a cold tube(overheats) and arching effect due to vaporized tungsten
T.
"Radiation Equivalent Man" the radiation amount absorbed by a person through their occupation
Type the Answer that corresponds to the displayed Question.
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21.
What did the Coolidge tube allow for the separation of
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22.
A step-up transformer results in an increase in what
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23.
This is just a measure of the total number of electrons that travel from cathode to anode to produce x-rays
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24.
Filaments normally operate at currents of how many amps
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25.
What type of circuit does voltage remain constant
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26.
The roentgen is a measure of the number of what produced in air by a quantity of x-rays
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27.
X-ray tubes in mammography have targets made of either what two materials
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28.
The process of heating the x-ray tube filament so that electrons can be boiled off is know as what
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29.
What are the fundamental building blocks of matter
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30.
At what speed does all electromagnetic radiation travel

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