MEDICAL RADIOGRAPHY MID-CURRICULAR REVIEW TEST
QUESTIONS AND ANSWERS
step-down transformer - ANSWER appliance that lowers voltage and increases
current, in proportion to the turns ratio
AC only - ANSWER type of current used by transformers on an x-ray machine
line focus principle - ANSWER proportionality referred to as the process of
tilting the surface of the target (anode) that makes the effective focal area
smaller than the actual focal area
binding energy - ANSWER amount of energy required to remove an electron
from an atom
line voltage compensator - ANSWER utilized to correct the voltage to precisely
220 V in order to produce a constant voltage in an x-ray machine
filament transformer - ANSWER used to change the incoming line voltage of
220 V into the 10-12 volts required to provide current
characteristic interaction - ANSWER production of an x-ray photon during a
collision between the incoming electron and a K-shell electron in the tungsten
atom
direct - ANSWER relationship between exposure-tube current
voltmeter - ANSWER device for the measurement of electric potential
voltage +, current - - ANSWER a transformer with more turns in the secondary
than in the primary will affect the voltage and current how
, provides greater spatial resolution - ANSWER advantages of a smaller anode
angle for the x-ray tube
valence - ANSWER informs us whether a material is a conductor or an
insulator
inner-shell electron - ANSWER part of an atom on which the incoming photon
has an effect in a photoelectric process
mutual induction - ANSWER phenomenon whereby electricity is produced
when 2 coils are placed near each other and a varying current provided to the
first coil induces an equal flow in the second coil
decrease - ANSWER what would happen to the amount of current passing
through a circuit if the resistance is made greater
target angle - ANSWER As a result of the line focus principle, effective focal
spot size decreases with diminishing:
high; high - ANSWER tungsten has a ______ atomic number and a _____
melting point
bremsstrahlung - ANSWER most of the x-rays that are generated at the target
are __________________
amplitude - ANSWER part of the waveform that goes between the primary and
secondary sides of the high voltage transformer
potential energy - ANSWER energy of position stored
solenoid - ANSWER simplest version of an electromagnet created by a current
in a coil of wire
voltage ripple - ANSWER extent to which the voltage changes throughout an
x-ray exposure
QUESTIONS AND ANSWERS
step-down transformer - ANSWER appliance that lowers voltage and increases
current, in proportion to the turns ratio
AC only - ANSWER type of current used by transformers on an x-ray machine
line focus principle - ANSWER proportionality referred to as the process of
tilting the surface of the target (anode) that makes the effective focal area
smaller than the actual focal area
binding energy - ANSWER amount of energy required to remove an electron
from an atom
line voltage compensator - ANSWER utilized to correct the voltage to precisely
220 V in order to produce a constant voltage in an x-ray machine
filament transformer - ANSWER used to change the incoming line voltage of
220 V into the 10-12 volts required to provide current
characteristic interaction - ANSWER production of an x-ray photon during a
collision between the incoming electron and a K-shell electron in the tungsten
atom
direct - ANSWER relationship between exposure-tube current
voltmeter - ANSWER device for the measurement of electric potential
voltage +, current - - ANSWER a transformer with more turns in the secondary
than in the primary will affect the voltage and current how
, provides greater spatial resolution - ANSWER advantages of a smaller anode
angle for the x-ray tube
valence - ANSWER informs us whether a material is a conductor or an
insulator
inner-shell electron - ANSWER part of an atom on which the incoming photon
has an effect in a photoelectric process
mutual induction - ANSWER phenomenon whereby electricity is produced
when 2 coils are placed near each other and a varying current provided to the
first coil induces an equal flow in the second coil
decrease - ANSWER what would happen to the amount of current passing
through a circuit if the resistance is made greater
target angle - ANSWER As a result of the line focus principle, effective focal
spot size decreases with diminishing:
high; high - ANSWER tungsten has a ______ atomic number and a _____
melting point
bremsstrahlung - ANSWER most of the x-rays that are generated at the target
are __________________
amplitude - ANSWER part of the waveform that goes between the primary and
secondary sides of the high voltage transformer
potential energy - ANSWER energy of position stored
solenoid - ANSWER simplest version of an electromagnet created by a current
in a coil of wire
voltage ripple - ANSWER extent to which the voltage changes throughout an
x-ray exposure
