physics 1
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| show | Equal to the number of protons and neutrons in the nucleus of the atom.
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| If an atom has16 protons and 16 electrons, how many electrons are orbiting in the M shell? | show 🗑
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| show | An isotope has the same number of protons but a different number of neutrons.
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| show | As wavelength increases, frequency decreases.
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| What are the atomic particles that carry an electrical charge? | show 🗑
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| The atomic number given to an element is: | show 🗑
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| The one property that is common with all of the energies found in the electromagnetic spectrum is: | show 🗑
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| The octet rule states that any atom cannot have more than 8 orbiting shells. | show 🗑
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| show | 18
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| A proton is roughly _____ times larger than an electron. | show 🗑
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| show | Centrifugal forcce
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| show | Molecule
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| show | 1000 cubic centimeters of water at 0 C.
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| show | Bohr model
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| show | Protons and Neutrons
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| The binding energy that holds an electron in its shell around an atom: | show 🗑
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| What is the maximum number of electrons that can orbit in the P-shell if the P-shell is not the outermost shell of that atom? | show 🗑
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| show | angstroms
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| show | 8
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| In the United States, the standard current that comes into our homes is: | show 🗑
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| show | Resistance
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| show | Increase conductor length, decrease diameter of tube, increase in temperature.
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| Which of the following metals makes a better conductor? Gold, Silver, Al | show 🗑
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| show | The Watt
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| 1 Watt is produced by | show 🗑
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| show | P = V x I
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| The Watts on the primary side of the of the transformer has to equal the watts on the secondary side. T/F | show 🗑
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| show | 1000
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| show | .4
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| What is voltage if the current is 30 amperes and the resistance is 10? | show 🗑
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| What is the amperage if you have 20 kilovolts and a resistance of 30. | show 🗑
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| What is the resistance if you have 40 volts and 40 milliamps? | show 🗑
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| show | 1,000
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| ______ is the force or electrical pressure that produces electron movement and current flow. | show 🗑
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| show | On the outside surface at an area of sharpest curvature.
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| show | 1 coulomb flowing per second
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| 66 kilovolts carrying 500 amperes will have a resistance of: | show 🗑
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| Increasing the length of a conductor will also increase: | show 🗑
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| show | 24 ampere
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| According to the Laws of Electrostatics, unlike charges will repel one another. | show 🗑
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| Unlike charges ____ each other | show 🗑
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| What is the unit of current? | show 🗑
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| show | A conductor and an insulator
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| If the electricity to your home costs $.75 per kilowatt hour and you operate a 2000 watt vacuum cleaner for 30 minutes, what is your cost for this period of time? | show 🗑
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| show | True
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| show | Volts multiplied by amperes equals watts
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| If a cicuit is carrying 500 volts and has a resistance of 1 ohm, the amperage in this circuit is 500 T/F | show 🗑
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| show | Friction, Contact, Induction
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| show | Increased when the conductor diameter gets smaller.
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| show | 200
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| show | Electromagnetic induction
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| An autotransformer operates on mutual induction. | show 🗑
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| show | Autotransformer
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| show | False
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| show | Step Down
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| If you Increase voltage from the primary side to the secondary side of the transformer it is a ___ transformer | show 🗑
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| Which of the following types of materials has high permeability? | show 🗑
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| A device that converts mechanical energy to electrical energy is called a/an: | show 🗑
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| A device that converts electrical energy into mechanical is called a/an: | show 🗑
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| show | autotransfomer
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| show | step-down, 20
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| A series of coils of wire within proximity of each other will create a combined magnetic field that can be used as a tool. This device is known as a _______. | show 🗑
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| If the current on the primary side of your step-down transformer is 10,000 volts and the current on the secondary side is 500 volts, how many coils are located in the secondary side if the primary side of the transformer has 100 coils? | show 🗑
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| show | Inverter
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| A device that is used in portable x-ray machines that can accumulate and store an electrical charge is a/an: | show 🗑
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| Rectification of AC current is necessary for: | show 🗑
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| show | dipoles
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| If a material has high permeability (easily magnetized), it will have ______ retentivity. | show 🗑
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| Permeability and Retentivity are ____ proportional to each other | show 🗑
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| show | True
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| The type of magnet that is produced by heating an alloy within a strong magnetic field is: | show 🗑
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| show | False
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| . If a transformer has an input of 200 V and 40 amps on the primary side, the output in watts on the secondary side will be: | show 🗑
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| Half wave rectification of the power coming into an x-ray machine will utilize only 50% of the incoming power.T/F | show 🗑
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| What is the cost to run your hairdryer if it uses 1500 watts and you operate it for 15 minutes. The electric co charges you 80 cents per kilowatt hour? | show 🗑
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| show | Half the speed of light
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| show | OSL
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| Beta particles are identical to ______ except for their origin. | show 🗑
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| show | O shell to K shell
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| show | Zero
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| show | 74
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| show | Bremsstruhlung
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| show | OSL
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| show | 18 keV
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| The type of field survey instrument that is only good at detecting particulate radiations and does not provide measurement of exposure is the: | show 🗑
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| If during a procedure, a patient's skin started turning red from a prolonged exposure, this would be considered a _______ effect. | show 🗑
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| show | The efficiency in which photons are produced.
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| An alpha particle is composed of : | show 🗑
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| show | 0.08 keV
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| The atomic number for Beryillium is | show 🗑
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| show | 320 mR/hr
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| Total filtration is a combination of | show 🗑
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| . A technique used at 40" will need to be increased by a factor of ____ if the distance is doubled. | show 🗑
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| show | 75 kVp at 1.5 mAs
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| Most of the exposure to film when using a film/screen combination is a result from the production of: | show 🗑
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| show | mAs, kVp, and distance
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| A known technique of 110 kVp and 8 mAs worked well for a chest x-ray done at 40" on a large patient. If the distance needed to be increased to 66", your new technique should be 110 kVp at ____ mAs. | show 🗑
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| Which of the following techniques will equal a change in density by a factor of 4 by employing the 15% rule? Your original technique was 80 kVp at 8 mAs. | show 🗑
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| The Reciprocity Law basically states that any combination of mA and time that equal the same mAs will create the same density on a radiograph when all other factors are the same. | show 🗑
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| When using a compensating filter, the thinnest part of the filter should be in-line with the thickest part of the body part.T/F | show 🗑
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| show | A Beryillium window on the tube housing.
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| show | 13
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| show | 7.2
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| A good technique done at 60" is 85 kVp at 8 mAs. If you were to decrease your distance to 40" and not change the kVp, your new mAs should be: | show 🗑
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| All diagnostic x-ray machines must have a minimum filtration of: | show 🗑
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| show | False
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| When added filtration is added to the beam, what happens to the average energy of the beam on the emission spectrum? | show 🗑
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| Which of the following equations would you use to compute the difference in intensity of electromagnetic radiations, when measured at different distances, when a known intensity exists? | show 🗑
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| show | Pair Production
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| show | Photoelectric
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| Which of the following interactions increases as kVp increases? | show 🗑
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| The kind of interaction that excites the nucleus and causes a nuclear fragment to be released is known as: | show 🗑
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| Hydrogen, carbon, and oxygen all have K-shell binding energies of: | show 🗑
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| show | Back scatter
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| When just comparing body tissues, soft tissues interactions are about 50/50 Compton's and Photoelectric at about: | show 🗑
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| show | False
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| In the diagnostic imaging range, most of the photons that strike the patient are: | show 🗑
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| With photoelectric interactions, the secondary photons produced when radiating Barium and Iodine will have higher frequencies than when x-raying only soft tissue of the body. T/F | show 🗑
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| Which two of the following interactions ARE NOT of significance in diagnostic radiology? Coherent | show 🗑
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| show | Comptons
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| As kVp increases the total number of photons that are transmitted without interactions _______. | show 🗑
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| Higher kVp and low mAs will cause less patient dose than low kVp and high mAs.T/F | show 🗑
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| What is the unit of mass | show 🗑
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| show | 1,000
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| When two or more atoms are chemically united they form a : | show 🗑
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| Which attraction is of water is the weakest: Ice, gas/steam, or liquid | show 🗑
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| show | The Joule
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| show | A proton and nucleus
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| What is a quark? | show 🗑
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| What contains no charge and is thought of to be electronically neutral? | show 🗑
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| The number of protons and the number of neutrons are equal in a ____ atom | show 🗑
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| If an atom gains or loses neutrons it becomes an___ | show 🗑
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| If an atom gains or loses an electron it becomes an___ | show 🗑
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| show | negative
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| show | positive
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| What are the two opposing forces that contribute to the stability of an electrons orbit: | show 🗑
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| show | 2n^2
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| show | 8
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| show | 98
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| show | 32
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| show | greater
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| Electrical energy or electricity is the result of the movement of electrons. T/F | show 🗑
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| show | the nucleus of a radioactive material
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| x-rays originate in an : | show 🗑
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| show | doubled
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| Only negative charges move along solid conductors. T/F | show 🗑
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| objects can be electrified by three methods: | show 🗑
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| show | conductors and superconductors
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| show | insulators
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| Electrons move from an are of ____ concentration to an area of ____ concentration | show 🗑
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| DC current comes from a continuous source such as a battery, T/F | show 🗑
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| show | The ampere
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| show | 1coloumb/per second
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| show | The ohm
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| What is the amperage in a circuit of 20 V and 10 ohms? | show 🗑
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| Let's do another one: what is the voltage in a circuit of 100 amperes and 5 ohms? | show 🗑
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| show | 400,000 ohms
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| what is the power rating, in kilowatts, of an x-ray generator capable of 800 mA at 100 kV? | show 🗑
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| show | True
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| The force fields that are created when magnetic dipoles orient to create a magnet are called lines of ____, lines of ____ or the _____ | show 🗑
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| show | Weber
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| _____are created when iron oxide remains in the earth's magnetic field for ages, slowly orienting the magnetic dipoles in the same direction. | show 🗑
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| ____ are temporary magnets produced by moving or changing electric current. | show 🗑
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| When a non-magnetized iron bar is brought within the lines of force of a strong magnet, the dipoles will temporarily align themselves with the lines of force passing through the iron bar, this describes ___ | show 🗑
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| show | increases
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| _____are actually weakly repelled by all magnetic fields, including both North and South Poles. water is slightly ____ | show 🗑
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| show | Paramagnetic, Aluminum & Platinum
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| Nonmagnetic materials consist of | show 🗑
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| if a transformer is supplied with 400 V to the primary coil, has 100 turns of wire on the primary coil, and 20,000 turns of wire on the secondary coil, what will the voltage be in the secondary coil? | show 🗑
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| If a transformer has 120 turns of wire on the primary coil, 80 V in the primary coil, and 120 V in the secondary coil, how many turns of wire must there be in the secondary coil? | show 🗑
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| show | Alternating current
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| show | 4
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| what is the dmf | show 🗑
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| What is the inverse square law | show 🗑
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| What is the transformer law | show 🗑
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| show | V=IxR
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| show | C 6
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| What is the Atomic number of oxygen | show 🗑
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| show | Mo 42
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| show | Ca 20
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| What is the Atomic number of radon | show 🗑
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| What is the Atomic number of barium | show 🗑
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| show | Al 1
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| show | I 53
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| What is the Atomic number of lead | show 🗑
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| What is the Atomic number of tungsten | show 🗑
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| If your beam energy is 70 kvp or above how much of your beam is composed of Characteristic and Bremsstruhlung | show 🗑
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| show | 2.5
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| 1 cm equals how many mm and meters? | show 🗑
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| show | 210-220 volts.
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| 26. How many pulses will you get using a single phase half-wave rectified wave form vs. a full-wave rectified waveform? | show 🗑
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| Generators must terminate the exposure at ___mAs for exposures above 50 KVP | show 🗑
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| show | 2000 mAs
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| show | stator
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| show | Angstrom
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| show | decreasing
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| show | a small coil of thin thoriated tungsten wire
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| What is a focusing cup made out of? | show 🗑
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| show | 69.5 kev
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| 110 volts x 3 amps = | show 🗑
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| show | AC & DC
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| show | transformer
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| show | 120
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| show | DC
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| show | filament current
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| show | rectify an ac current
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| 80 kv and 200 mA = ____ ohms | show 🗑
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| if there are more coils on the secondary side of a transformer it is a ____ ___ transformer | show 🗑
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| show | yes
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| show | Tesla
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| show | gauss
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| 1 tesla = ____ gauss | show 🗑
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| show | Grid controlled/grid biased tube
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| What do you call the electromagnets that drive the rotor? | show 🗑
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| show | Molybdenum
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| show | .25 or 1/4th the speed
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| show | 4
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| single phase machine. 6 exposures of 80 kvp @ 32 mAs = ___ HU | show 🗑
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| If you have 100 mR/HR of leakage radiation at 1 meter from your tube how much do you have at 2000 millimeters? | show 🗑
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| If you have 50 mR/HR of leakage radiation at 100 cm from your tube how much do you have at 50 cm? | show 🗑
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| 400 mA at 1/5th a second = ___ mAs | show 🗑
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| show | 375
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| 500 mAs for 1/10th of a second = ____ mAs | show 🗑
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| 800 mA for .001 seconds = ____ mAs | show 🗑
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| High frequency (1.40) 5 exp. of 90 kvp @ 24 mAs + 3 exp. of 75 kVp @ 40 mAs | show 🗑
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| show | 14,760.9
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| If a single photon has 41 keV of energy is it Bremsstruhlung or Characteristic? | show 🗑
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| show | 69.5
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| show | anode, cathode
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| show | Optically stimulated luminescence
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| Ring badges are TLDs or OSLs | show 🗑
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| Film Badges are TLDs or OSLs | show 🗑
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| AC current in the US flows at a rate of ___ Hertz | show 🗑
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| show | 6
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| show | 1.8 mAs
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| 60 mAs at 36" will create the same density as ____ mAs at 72" | show 🗑
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| show | 3.24
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| show | 22.5 mAs
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| You produce a light xray and discover that your SID was 56" instead of 40". Since technique was 75 kVp at 32 mAs, what should you have used? | show 🗑
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| show | 40
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| show | half
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| The two most common grid errors are: | show 🗑
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| show | Increases
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| You can use an angle on a grid if you ____ | show 🗑
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| Shoulder with a 6:1 grid was 18mAs. How much without a grid. | show 🗑
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| Pelvis without a grid was 10 mAs, how much would you use with a 8:1 grid. | show 🗑
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| show | 8:1
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| show | Upside down
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| show | Cross-hatched
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| Converting data back into analog information for viewing on a monitor requires the information to be passed through the | show 🗑
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| Image transmission within a hospital happens via the ______ | show 🗑
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| Conversion of an image into digital data requires the use of the: | show 🗑
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| If you needed to 'complete' an exam, which of the following programs would you access an order to do this? (HIS, RIS, HL-7, PACS) | show 🗑
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| The heart of a PACS system is a high-end computer or server. (T/F) | show 🗑
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| One advantage that digital mammography has over conventional film mammography is | show 🗑
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| show | Lossy & Lossless
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| show | False, They have worse, but can make it up via post-processing
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| show | HIS
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| show | HL-7
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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