LRA 211 Final Review Study Guide: Latest Updated : Questions
& Answers(Solved)
Who discovered the electron? - ANSWER:JJ Thomson
The earliest atomic theory based on arrangement similar to the solar system is attributed to? -
ANSWER:Rutherford
What are the three fundamental particles of the atom? - ANSWER:proton, neutron and electron
what does the atomic nucleus contain? - ANSWER:protons and neutrons
What is the component of the nucleus that has a positive charge and mass? - ANSWER:proton
What is the component of the nucleus that has mass but no electrical charge is? - ANSWER:neutron
when an atom has more electrons than protons it will have: - ANSWER:a negative charge
When an atom becomes negatively or positively charged it is usually due to a change in the number of -
ANSWER:electrons
a negative ion is - ANSWER:an atom with more electrons than protons
a positive ion is - ANSWER:an atom with more protons than electrons
the electron shell closest to the nucleus is - ANSWER:k shell
which electromagnetic radiation has the lowest energy level? - ANSWER:radio waves
As the wave's frequency increases, the wavelength: - ANSWER:decreases
Frequency is typically measured in: - ANSWER:hertz
the process of removing an electron from an atom is: - ANSWER:ionization
x-rays are produced - ANSWER:using fast-moving electrons
what helps to keep the x-ray tube cool on the inside of the protective housing? - ANSWER:cooling fans
and an oil bath
In terms of the x-ray tube, envelope is another name for the: - ANSWER:glass or metal enclosure
the positive end of the x-ray tube is called? - ANSWER:anode
the negative end of the x-ray tube is called? - ANSWER:cathode
the area of the envelope where x-rays should exit the tube is the: - ANSWER:target window
the anode serves as a - ANSWER:heat conductor
electrical conductor
, target for the electron interaction to produce x-ray
what are the two types of anode designs? - ANSWER:stationary and rotating
why is tungsten used to coat the anode disc? - ANSWER:it has a high atomic number
With a rotating anode, the focal spot becomes a focal - ANSWER:track
If a particle strikes a nucleus with the same amount of energy as the atom's nuclear binding energy, what
happens? - ANSWER:it can split the atom
why do electrons stay in orbit around the nucleus? - ANSWER:Because of their attraction to protons
the electron binding energy is stronger when - ANSWER:there are more protons and the electron is
closer to the nucleus
electromagnetic radiation has - ANSWER:no mass
what kind of disturbance does electromagnetic radiation NOT cause? - ANSWER:mechanical
which is not a form of electromagnetic radiation? - ANSWER:sound
wavelength is - ANSWER:the distance from the peak of one wave to the next
wavelength is measured in - ANSWER:meters
the target window is approximately - ANSWER:5cm^2
what is protective tube housing lined with? - ANSWER:lead so it can absorb radiation
what does the protective tube housing provide? - ANSWER:solid, stable mechanical support
electrical insulation and thermal cooling
limits the radiation that can exit the tube other than toward the patient
leaking radiation can measure no more than - ANSWER:100 mR per hour at the distance of 1 meter
the cathode includes - ANSWER:Filaments and focusing cup
the main purpose of the enclosure is to - ANSWER:maintain a vacuum within the tube
glass tube enclosures are made of - ANSWER:borosilicate glass because it can withstand high levels of
heat
the stationary anode has a small area of tungsten embedded in - ANSWER:a copper rod
the core of a rotating anode is - ANSWER:molybdenum
Why is molybdenum used? - ANSWER:it is light but strong, making it easier for thee anode to rotate
the stator is - ANSWER:the portion of the induction motor that is found outside the tube enclosure
Electrons travel - ANSWER:approx 0.5 mm into the target during x-ray production
& Answers(Solved)
Who discovered the electron? - ANSWER:JJ Thomson
The earliest atomic theory based on arrangement similar to the solar system is attributed to? -
ANSWER:Rutherford
What are the three fundamental particles of the atom? - ANSWER:proton, neutron and electron
what does the atomic nucleus contain? - ANSWER:protons and neutrons
What is the component of the nucleus that has a positive charge and mass? - ANSWER:proton
What is the component of the nucleus that has mass but no electrical charge is? - ANSWER:neutron
when an atom has more electrons than protons it will have: - ANSWER:a negative charge
When an atom becomes negatively or positively charged it is usually due to a change in the number of -
ANSWER:electrons
a negative ion is - ANSWER:an atom with more electrons than protons
a positive ion is - ANSWER:an atom with more protons than electrons
the electron shell closest to the nucleus is - ANSWER:k shell
which electromagnetic radiation has the lowest energy level? - ANSWER:radio waves
As the wave's frequency increases, the wavelength: - ANSWER:decreases
Frequency is typically measured in: - ANSWER:hertz
the process of removing an electron from an atom is: - ANSWER:ionization
x-rays are produced - ANSWER:using fast-moving electrons
what helps to keep the x-ray tube cool on the inside of the protective housing? - ANSWER:cooling fans
and an oil bath
In terms of the x-ray tube, envelope is another name for the: - ANSWER:glass or metal enclosure
the positive end of the x-ray tube is called? - ANSWER:anode
the negative end of the x-ray tube is called? - ANSWER:cathode
the area of the envelope where x-rays should exit the tube is the: - ANSWER:target window
the anode serves as a - ANSWER:heat conductor
electrical conductor
, target for the electron interaction to produce x-ray
what are the two types of anode designs? - ANSWER:stationary and rotating
why is tungsten used to coat the anode disc? - ANSWER:it has a high atomic number
With a rotating anode, the focal spot becomes a focal - ANSWER:track
If a particle strikes a nucleus with the same amount of energy as the atom's nuclear binding energy, what
happens? - ANSWER:it can split the atom
why do electrons stay in orbit around the nucleus? - ANSWER:Because of their attraction to protons
the electron binding energy is stronger when - ANSWER:there are more protons and the electron is
closer to the nucleus
electromagnetic radiation has - ANSWER:no mass
what kind of disturbance does electromagnetic radiation NOT cause? - ANSWER:mechanical
which is not a form of electromagnetic radiation? - ANSWER:sound
wavelength is - ANSWER:the distance from the peak of one wave to the next
wavelength is measured in - ANSWER:meters
the target window is approximately - ANSWER:5cm^2
what is protective tube housing lined with? - ANSWER:lead so it can absorb radiation
what does the protective tube housing provide? - ANSWER:solid, stable mechanical support
electrical insulation and thermal cooling
limits the radiation that can exit the tube other than toward the patient
leaking radiation can measure no more than - ANSWER:100 mR per hour at the distance of 1 meter
the cathode includes - ANSWER:Filaments and focusing cup
the main purpose of the enclosure is to - ANSWER:maintain a vacuum within the tube
glass tube enclosures are made of - ANSWER:borosilicate glass because it can withstand high levels of
heat
the stationary anode has a small area of tungsten embedded in - ANSWER:a copper rod
the core of a rotating anode is - ANSWER:molybdenum
Why is molybdenum used? - ANSWER:it is light but strong, making it easier for thee anode to rotate
the stator is - ANSWER:the portion of the induction motor that is found outside the tube enclosure
Electrons travel - ANSWER:approx 0.5 mm into the target during x-ray production
