Radiography Physics 131
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| show | SHORTEST POSSIBLE EXPOSURE TIME
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| show | GENERATOR
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| show | VOLTMETER
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| Placing an iron core into a current carrying coil of wire(solenoid) would turn the device into what | show 🗑
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| A current carrying coil of wire is known as what | show 🗑
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| show | To convert electricity into mechanical energy
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| show | To convert mechanical energy into electricity
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| A magnetic field is created any time what type of particle is in motion | show 🗑
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| An electric current is induced in a circuit if some part of that circuit is in what type of magnetic field | show 🗑
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| What are the four factors of Faraday's law | show 🗑
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| What are the SI units of magnetic field strength | show 🗑
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| Only what shell x-rays of tungsten are useful for imaging | show 🗑
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| Proton | show 🗑
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| show | A particle located inside the nucleus of an atom that has no charge.
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| show | A small particle that usually orbits around the nucleus of an atom and has a negative charge
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| show | The total number of protons an element has, which consequently defines what the chemical element is.
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| Ionization | show 🗑
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| Radiation | show 🗑
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| Photon | show 🗑
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| Properties of a photon | show 🗑
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| Compton Scattering | show 🗑
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| Insulator | show 🗑
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| show | A material that under some conditions behaves as an insulator, and in other conditions, behaves as a conductor
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| show | Any substance through which electrons flow easily
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| Resistance | show 🗑
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| show | 2^n, where n = the number of the shell
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| What is the smallest particle that has all the properties of an element | show 🗑
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| show | Atoms(Elements) and Molecules(Compounds)
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| What are the seven types of energy | show 🗑
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| show | Molecule
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| show | 3.0 x 10^8
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| What two natures does electromagnetic energy behave in | show 🗑
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| show | Inversely proportional
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| What is the smallest unit of negative electric charge | show 🗑
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| If two negatively charged objects are brought near to each other will they be attracted or repelled | show 🗑
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| If an object gains an electron does it become positively or negatively electrified(charged) | show 🗑
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| Can protons move freely from one atom to another | show 🗑
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| What are the three ways electrification can be created | show 🗑
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| show | Voltage (Volts), Current (Amps) and Resistance (Ohms)
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| show | Parallel
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| An ampmeter connects to what kind of circuit | show 🗑
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| What type of circuit does voltage remain constant | show 🗑
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| What are the four factors that influence the resistance of a conductor | show 🗑
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| show | Branch of physics dealing with stationary or resting electric charges.
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| show | Insufficient or over abundance in the amount of electrons.
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| Define negative Electrification. | show 🗑
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| show | Wire Going straight into the earth to help dissipate electrical charges
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| What does an electroscope do? | show 🗑
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| Define electrification by induction. | show 🗑
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| What is the first law of electrostatics? | show 🗑
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| What is the second law of electrostatics? | show 🗑
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| show | Charges reside on the external surfaces of conductors.
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| show | The concentration of charges on a curved surface of a conductor is greatest where curvature is greatest.
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| show | Only negative charges can move in a solid conductor.
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| show | Resting charges.
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| What particle moves when electrification occurs? | show 🗑
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| What is the movement of electrons in insulators? | show 🗑
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| A charged body brought near an uncharged body is an example of what type of electrification? | show 🗑
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| show | The science of electric charges in motion.
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| show | Gas, Ionic solution, Metallic conductor, Vacuum
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| What are the two sources of electric current | show 🗑
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| Define potential difference. | show 🗑
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| What is the UNIT of potential difference | show 🗑
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| Define volt. | show 🗑
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| show | The maximum difference of potential between the terminals of a battery.
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| Define current. | show 🗑
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| show | Ampere
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| show | 1 coulomb quantity of electric charge flowing per second.
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| show | Property of circuit opposing or hindering flow of electric current.
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| What is the UNIT of electrical resistance | show 🗑
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| Define OHM. | show 🗑
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| On what factors does the resistance of a conductor depend | show 🗑
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| Define dry cell. | show 🗑
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| Define wet cell. | show 🗑
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| show | The resistance becomes greater as the temperature rises.
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| Define OHM's law. | show 🗑
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| show | Meter that measures in amperes. (in series)
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| show | Meter that measures, in volts, the potential difference between any two points in a circuit. (in parallel)
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| What is the unit of power | show 🗑
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| What is the equation for power loss | show 🗑
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| What is the formula that defines power loss in an electrical circuit | show 🗑
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| A gasoline engine will convert chemical energy to what type of energy | show 🗑
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| What type of charge moves in a conductor | show 🗑
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| show | Decreases resistance
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| What effect does a high temperature have on resistance | show 🗑
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| show | Current(Amperage)
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| show | Electric charge
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| show | Electric Circuit
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| show | Resistance
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| A flow of one coulomb per second | show 🗑
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| show | Ammeter
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| Devices designed to have specific resistance | show 🗑
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| Device that measures potential difference | show 🗑
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| show | Volt
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| When an x-ray interacts with inner-shell electrons and is completely absorbed, it has undergone which interaction? | show 🗑
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| show | Isotopes
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| show | ionic bond
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| show | covalent bond
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| Any quantity of a molecule is a chemical _________. | show 🗑
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| Atoms of various elements may combine to form what kind of structures? | show 🗑
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| show | isotopes
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| In the neutral atom, the number of electrons is equal to the number of protons. What is the number of protons called? | show 🗑
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| The number of protons plus the number of neutrons in the nucleus of an atom is called: | show 🗑
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| show | the outward push or flying out from the center force so electrons maintain their distance from the nucleus while traveling in a circular or elliptical path
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| show |
a generator is used to convert mechanical energy to electrical energy
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| What is used to convert electrical energy into mechanical energy? | show 🗑
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| show | work that can be done when an electron moves through an electric potential difference (voltage)
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| What is electricity? | show 🗑
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| How do two atoms that are attracted to each other result in an ionic bond? | show 🗑
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| show | K-shell
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| show | more tightly it is bound
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| The strength of attachment of an electron to the nucleus is referred to as what? | show 🗑
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| What is the force that keeps an electron in orbit? | show 🗑
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| What does the number of electrons in the outermost shell determine? | show 🗑
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| What is the number of electrons in the outermost shell of an atom(valence) equal to on the ptable? | show 🗑
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| What is the most electrons contained in the outer most shell of a stable atom | show 🗑
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| show | two
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| show | seven
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| What is the first shell referred to as | show 🗑
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| What is the last shell referred to as | show 🗑
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| show | the number of protons
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| What are the particles in the nucleus called | show 🗑
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| show | protons and neutrons
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| What does the shell arrangement tell us about an atom | show 🗑
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| What do the shells represent | show 🗑
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| show | the greater its binding energy
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| show | electrically neutral, charge is zero
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| show | the removal or addition of an orbital electron in an atom
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| show | ionized
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| show | the distance of the shell from the nucleus
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| What are the fundamental particles of an atom | show 🗑
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| show | empty space
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| What is an atom | show 🗑
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| when characteristic x-rays are produced, the energy is characteristic of | show 🗑
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| 8 Forms of Energy are | show 🗑
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| What is work | show 🗑
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| show | Bohr
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| show | definite combination
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| show | no charge
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| show | +1, +2
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| show | +/-3 and +/- 4
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| Insulator | show 🗑
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| show | 0
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| show | Sharing of Orbital electron
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| show | an attraction between electrons but no sharing
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| show | # of Shells and ranges from Non Metallic to Strong Metallic
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| show | A body at rest to stay at rest and a body in motion to stay in motion
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| show | energy
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| Energy is defined as | show 🗑
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| show | Kinetic and potential
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| show | energy in motion
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| show | energy at rest
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| Kinetic and potential energy are ____ related | show 🗑
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| show | All energy in the universe can not be created or destroyed and stays constant.
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| show | force*distance
-------------
time
rate of doing work
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| show | an impure form of matter
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| show | definite compositions or pure forms of matter
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| Elements are what | show 🗑
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| show | elements that have combined together example. H2O
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| show | smallest particle having all the properties of the compound *1 molecule of H2O*
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| show | smallest particle having all the properties of the substance
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| What is the electron spin theory | show 🗑
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| show | AMU-Atomic Mass Unit
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| show | Valence
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| Ionization can occur one of these 6 reactions happen | show 🗑
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| show | Chemical ionization
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| show | Positive
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| What is the charge of a Anion | show 🗑
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| show | Cathode to Anode
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| show | static electricity
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| If electrons are removed via friction what charge does that make the object | show 🗑
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| What is the name of the zone that surrounds ever charged body. | show 🗑
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| show | Positively
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| The earth is an infinite reservoir for what | show 🗑
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| Ground potential equals ____ | show 🗑
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| show | 1.Likes repel, opposites attract
2.Force b/t 2 charges is Directly proportional to the product of their quantities and inversely proportional to the square of the distance b/t them
3.Electric charges reside only on the external surface
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| Laws of electrostatics 4-5 | show 🗑
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| show | lightning
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| show | electrodynamics or current electricity
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| show | conduction
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| show | electric circuit
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| show | switch
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| show | 1.potential difference
2.current
3.resistance
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| the difference in electrical potential energy b/t 2 points on an electric circuit | show 🗑
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| show | work
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| show | Electromotive force (EMF)
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| Unit of potential difference or emf is the | show 🗑
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| show | current
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| Current is measured in | show 🗑
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| show | Resistance
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| show | Ohm's
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| the reciprocal of resistance, or the ability of a circuit to conduct a current is known as | show 🗑
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| show | insulators or dielectrics
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| show | Ohm's Law
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| show | 1.Dry
2.Wet
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| In steady direct current the electrons flow in what | show 🗑
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| what are the 3 essential parts of a circuit | show 🗑
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| show | polarity
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| Galvanometers are what | show 🗑
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| An electrical circuit whose component parts are arranged end-to-end so that the current passes consecutively though each part | show 🗑
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| A circuit where the component parts are connected as branches of the main circuit so the current is divided among them | show 🗑
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| show | Add up
Stays the same
Adds up
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| show | Stay the same
Adds up
Add the reciprocal
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| An excessive amount of Amperage in a circuit may cause a ______ | show 🗑
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| 2 Devices made to stop a circuit from overloading | show 🗑
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| show | Capacitor(Condenser)
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| A capacitor does not make electricity, but only stores it. True or false | show 🗑
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| show | False, Capacitors can only hold as much as it is design allows it to.
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| To find the power of a current you must use what equation | show 🗑
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| What is the unit for "Power" | show 🗑
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| The Power loss formula is | show 🗑
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| Power Loss is ______ to the square of the current | show 🗑
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| The ability to attract Iron, cobalt, and nickle is what | show 🗑
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| show | magnet
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| show | 1.Lodestone--Natural
2.Alnico--Artificial
3.Electromagnet--Artificial
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| 3 Laws of magnetism | show 🗑
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| show | 1.breaking a magnet results in 2 magnets
2.Heating or hammering a piece of steel while it lies near a magnet causes the steel to magnetize
3.Stroking an iron bar with a magnet causes it to become magnetized
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| show | domain
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| show | random
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| show | A non magnetic element
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| the summation of the fields of all the domains is what | show 🗑
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| the "lines" of a magnetic field are called what | show 🗑
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| show | False. the Closer the lines the stronger
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| show | lines
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| Magnetic lines are directed from south pole to north pole of a magnet as curved lines in the surrounding space. True or False | show 🗑
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| Magnetic lines of force seem to repel each other when they are in the same direction. True or False | show 🗑
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| show | True. Diamagnetic materials are repelled by magnetic fields however, they do not influence them.
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| When a ferromagnetic material is brought near the north pole of a magnet the end farthest from the magnet will be what type of pole | show 🗑
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| The ease in which a material can be magnetized is what | show 🗑
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| show | Magnetic retentivity
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| show | Inverse
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| If a material has High permeability it has what retentivity | show 🗑
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| the 4 types of magnetic matter | show 🗑
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| A _____ can detect magnetic lines of flux | show 🗑
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| show | True
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| show | Magnetism
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| a branch of physics that deals with the relationship between electricity and magnetism | show 🗑
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| Who discovered that a magnetic compass needle turns when placed near copper wire carrying a direct current | show 🗑
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| show | magnetic field
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| The Left hand Thumb rule is.... | show 🗑
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| show | electric current
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| show | A coil of wire conductor
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| the north pole of a iron core of a electromagnet is always on the negative side of the current. True or False | show 🗑
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||||
| show | helix carrying an electric current
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| show | Put an iron core in a solenoid
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| show | increases
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| Michael Faraday discovered what | show 🗑
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| show | electromagnetic induction
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| An interaction between a single line of force and a single loop of conductor is called what | show 🗑
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| 4 Factors that determine the size or magnitude of an induced EMF | show 🗑
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||||
| If a stationary wire was surrounded by a magnetic field of varying strength would an EMF be produced. | show 🗑
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| show | True, though no current will flow unless it is closed
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| show | 1.Moving wire and stationary magnetic flux
2.Moving magnetic Flux and stationary wire
3. stationary wire and magnetic flux varies in strength
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|
||||
| the magnitude of the induced EMF is directly proportional to the number of lines per second crossing the conductor, True or False | show 🗑
|
||||
| To determine the relationships between the motion of the conductor, and the magnetic field and the direction of the current you need to use what | show 🗑
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| show | right
🗑
|
||||
| when a secondary opposite flowing current occurs in a newly closed circuit because of the lines of flux are cutting across the coil. this is called what | show 🗑
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| show | opposes
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| show | falls
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|
||||
| In Alternating current the "rise" to the peak of the wave is where the self-induction takes place. True or False | show 🗑
|
||||
| Mutual Induction is what | show 🗑
|
||||
| a device that converts mechanical energy to electrical energy by electromagnetic induction is called a what | show 🗑
|
||||
| A coil of wire that is rotated mechanically in the magnetic field is called a what | show 🗑
|
||||
| show | 1.powerful electromagnet
2.armature
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|
||||
| show | they are used to transfer the current from the armature to the wire conductor
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|
||||
| Do slip rings move in a generator? | show 🗑
|
||||
| What material are the "brushes" made up of in a generator. | show 🗑
|
||||
| a current which periodically reverses its direction is called a what | show 🗑
|
||||
| show | Sine or Sinusoidal
🗑
|
||||
| show | the distance between 2 corresponding points on the curve, that represents a full rotation
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|
||||
| show | 60
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|
||||
| show | 120
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|
||||
| RMS stands for... | show 🗑
|
||||
| By what formula would find the EFFECTIVE Voltage on a AC circuit | show 🗑
|
||||
| By what formula would find the MAXIMUM Voltage on an AC circuit | show 🗑
|
||||
| RMS can be used for Voltage or Amperage. True or False | show 🗑
|
||||
| AC causes a fluctuation in the strength and direction of the magnetic field set up around a coil. True or False | show 🗑
|
||||
| show | Opposite the applied EMF, This is caused by the back bias of the sine wave
🗑
|
||||
| show | the bucking effect of the back emf associated with the rapid self-induction that occurs during the entire time that an AC circuit is on
🗑
|
||||
| All resistive factors in a circuit is what | show 🗑
|
||||
| small capacitors that hinder the flow of current in AC | show 🗑
|
||||
| an opposition which tries to change the amount of current flowing | show 🗑
|
||||
| show | capacitor
🗑
|
||||
| show | Effective current=Effective Voltage/impedance or I=V/Z
🗑
|
||||
| The ring used in DC generators is called what | show 🗑
|
||||
| show | True
🗑
|
||||
| show | True
🗑
|
||||
| A X YY chart with consecutive arches all above the X axis is called what | show 🗑
|
||||
| show | 1.needed to operate transformers
2.can be transmitted over great distances
🗑
|
||||
| show | False, Power loss is proportional to the square of the amperage. P=I*I*R
🗑
|
||||
| show | Heat
🗑
|
||||
| show | electric motor
🗑
|
||||
| whenever a conductor carrying an electric current is placed in a magnetic field there is a force or side trust on the conductor. True or False | show 🗑
|
||||
| show | 1. conductor must carry a current
2. must be located in a magnetic field
🗑
|
||||
| show | True
🗑
|
||||
| The force is decreased when the conductor is in the form of a coil. True or False | show 🗑
|
||||
| show | Thumb represents direction that the conductor will move, Index finger direction of the magnetic field and the middle finger represents direction of the electrons
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|
||||
| show | slip, commutator
🗑
|
||||
| Motors consume less current than a heating device why. | show 🗑
|
||||
| show | 1. Direct current motor
2. Alternating Current motor
🗑
|
||||
| Alternating current motors come in 2 varieties what are they | show 🗑
|
||||
| Synchronous motors create Alternating current however it is built like a single phase ____ generator | show 🗑
|
||||
| show | False, the motor must rotate at the same speed *rotations per min* as the generator supplying the current
🗑
|
||||
| A disadvantage of synchronous motor lies in the limited speed in which it operates. True or False | show 🗑
|
||||
| show | stator
🗑
|
||||
| show | stator
🗑
|
||||
| show | multiphase
🗑
|
||||
| show | electrodynamometer
🗑
|
||||
| show | Voltage or Current
🗑
|
||||
| An electromagnetic device which changes an AC current from low voltage to high voltage or from High to low, with out loss of appreciable amount of energy. | show 🗑
|
||||
| show | 5
🗑
|
||||
| Transformers transfer electrical energy from one circuit to another without the use of moving parts or any electrical contact between the 2 circuits. True or False | show 🗑
|
||||
| show | 1.Air Core
2.Open Core
3.Closed Core
4.Shell-type
🗑
|
||||
| show | source
🗑
|
||||
| show | True
🗑
|
||||
| show | input
🗑
|
||||
| show | output
🗑
|
||||
| show | True
🗑
|
||||
| show | step up
🗑
|
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| the EMF induced in the secondary coil is to the emf in the primary coil, as the number of turns in the secondary coil is to the number of turns in the primary coil represents what | show 🗑
|
||||
| show | Vs Ns
-- = --
Vp Np
Vs=Voltage Secondary coil
Vp=Voltage Primary Coil
Ns=# of Turns Secondary Coil
Np=# of Turns Primary Coil
🗑
|
||||
| Step up transformers increase or decrease the output voltage | show 🗑
|
||||
| show | False a step down transformer has fewer loops on the secondary side then primary
🗑
|
||||
| When measuring the current in a transformer what formula must be used | show 🗑
|
||||
| show | inversely
🗑
|
||||
| a step up transformer increases ____ but decreases _____ | show 🗑
|
||||
| show | KVA *kilovolt-amperes or killowatts*
🗑
|
||||
| to find the KVA of a xray generator you need to use what formula | show 🗑
|
||||
| A transformer that consists of 2 insulated coils lying side by side is called | show 🗑
|
||||
| A transformer that consists of 2 insulated coils with iron cores lying side by side is called | show 🗑
|
||||
| show | leakage flux
🗑
|
||||
| show | Closed Core Transformer
🗑
|
||||
| Closed core provides a continuous path for the magnetic flux so only a small fraction of magnetic energy is lost to leakage. true or false | show 🗑
|
||||
| Windings are also known as | show 🗑
|
||||
| show | eddy currents
🗑
|
||||
| show | coolant or insulation
🗑
|
||||
| Laminated core, consisting of a pile of sheets of silicon steel each having 2 rectangular holes with the primary and the secondary coils both wound around the central section of the core is called what | show 🗑
|
||||
| show | oil
🗑
|
||||
| show | Silicon
🗑
|
||||
| A galvanometer with low resistance in a parallel is capable of measuring current when connected in series in a DC circuit. This device is a Ammeter True or False | show 🗑
|
||||
| A galvanometer protected by a high resistance in series measures potential difference when connected in a parallel. This is known as a voltmeter. True or False | show 🗑
|
||||
| show | 1.Copper losses
2.Eddy Current losses
3.Hysteresis Losses
🗑
|
||||
| show | Copper Losses
🗑
|
||||
| Power loss due to a large swirling current created by electromagnetic induction. | show 🗑
|
||||
| show | hysteresis
🗑
|
||||
| show | Autotransformer
🗑
|
||||
| A autotransformer is connected between the secondary side of the high voltage transformer and the xray tube. True or False | show 🗑
|
||||
| Another name for Autotransformer | show 🗑
|
||||
| Autotransformers are _____ wire coil wound around a _____ core. | show 🗑
|
||||
| show | Self
🗑
|
||||
| show | Vs #T1
-- = ---
Vp #Tt
Vs=Voltage secondary
Vp=Voltage primary
#T1=# of tapped turns
#Tt=# of Total turns
🗑
|
||||
| show | To prevent sparking that may occur causing damage to the equipment
🗑
|
||||
| show | 1.Choke Coil
2.Rheostat
3.High Frequency circuit
🗑
|
||||
| show | False. they work on the principle of Self Induction
🗑
|
||||
| Choke Coils require a _____ current | show 🗑
|
||||
| show | True
🗑
|
||||
| A variable resistor is also known as a | show 🗑
|
||||
| Rheostats can use either DC or AC. True or False | show 🗑
|
||||
| With H-F generators is became possible to obtain a nearly constant voltage output with ripple of less than 2 percent. True or false | show 🗑
|
||||
| High Frequency Generators turn AC current into DC, then change it back to AC, then again back to DC for the xray equipment to work. True or False | show 🗑
|
||||
| ____ is defined as the process of changing AC to DC | show 🗑
|
||||
| show | 1.Self-rectification
2.Vacuum tube or solid state diode rectification
🗑
|
||||
| Vacuum Tube diodes are also called ____ _____ | show 🗑
|
||||
| show | False, between the SECONDARY side of the transformer and the tube
🗑
|
||||
| Primary disadvantage of Self rectification is | show 🗑
|
||||
| show | self half wave
🗑
|
||||
| show | True
🗑
|
||||
| show | Half Wave
🗑
|
||||
| If there are 4 diodes in a circuit it is considered _____ _____ rectification | show 🗑
|
||||
| Rectifiers suppess the inverse voltage reducing the possibility of reverse flow this allows greater use of higher technical factors. True or False | show 🗑
|
||||
| show | using the entire AC wave results in the production of a high percentage of low energy xrays but can be eliminated by either filtration or 3phase/high frequency generator
🗑
|
||||
| Full wave rectification allows for a higher tube rating or heat-loading capacity compared to a half/self rectification. True or False | show 🗑
|
||||
| Solid State diode rectifiers are used as _______ | show 🗑
|
||||
| show | 1.Valance-where the electrons live normally
2.Forbidden-no electron can stay here
3.Conduction-allows for the movement of the electrons
🗑
|
||||
| show | False, in a conductor the 2 bands overlap allowing for electrons to move freely
🗑
|
||||
| show | False, in an insulator the forbidden band is very large, so no electrons can "jump" to the conduction band
🗑
|
||||
| show | True
🗑
|
||||
| ______ is the semiconductor we are familiar with in rectifiers | show 🗑
|
||||
| show | Arsenic
🗑
|
||||
| show | Doped
🗑
|
||||
| in N type silicon the n stands for what | show 🗑
|
||||
| show | electrons
🗑
|
||||
| show | Gallium
🗑
|
||||
| show | Positive
🗑
|
||||
| show | a deficiency of electrons creating a "Hole"
🗑
|
||||
| When combined together N-Type silicon and P-Type Silicon are attracted to each other. True or False | show 🗑
|
||||
| what is the name of the junction in a solid state rectifier | show 🗑
|
||||
| When the electrons from the N-Type silicon drift towards the P-Type "holes" and they meet in the middle what happens. | show 🗑
|
||||
| show | the potential difference between the positive and negative silicon ions in a solid state diode
🗑
|
||||
| show | modules
🗑
|
||||
| Advantages of the silicon rectifier over a valve tube are what (5) | show 🗑
|
||||
| If a rectifier has failed or is open then it causes the milliammeter to register only 1/2 the selected value causing radiographs to be consistently underexposed. True or false | show 🗑
|
||||
| When a rectifier blows it makes a loud squealing noise. True or False | show 🗑
|
||||
| show | Spinning top test
🗑
|
||||
| show | oscilloscope
🗑
|
||||
| If trying to determine the # of dots that would be present in a half wave rectifier you would use what formula. | show 🗑
|
||||
| show | time * 120 = #of Dots
🗑
|
||||
| If given the # of dots in a half wave rectifier and you need to find out the time used to achieve it what formula would you use | show 🗑
|
||||
| If given the # of dots in a full wave rectifier and you need to find the time used to achieve it, what formula would you use | show 🗑
|
||||
| show | True (Selman 109 Fig 12.1)
🗑
|
||||
| show | 1.Bremsstrahlung
2.Characteristic
🗑
|
||||
| Brems radiation occurs when electrons slow down or decelerate near the nucleus of an atom. True or False | show 🗑
|
||||
| What are the different types of interactions that cause Brems radiation (3) | show 🗑
|
||||
| show | True
🗑
|
||||
| show | 69
🗑
|
||||
| show | transformer outside the building on electrical pole
🗑
|
||||
| Pole Transformers are a step down transformer True or false | show 🗑
|
||||
| 120v-240v coming into the building is called what | show 🗑
|
||||
| a 3 wire system that is coming into a building consists of what. | show 🗑
|
||||
| show | True
🗑
|
||||
| show | True
🗑
|
||||
| Portion of the circuit that is connected between the electrical source and the primary coil of the transformer is called what. | show 🗑
|
||||
| show | Double bladed, single throw switch
🗑
|
||||
| an AC voltmeter connected in parallel with the autotransformer, that is, across the primary circuit between the autotransformer and the transformer. this is called what | show 🗑
|
||||
| show | Also known as exposure button
🗑
|
||||
| a timer using a wound spring with the accuracy of about 0.25 seconds. | show 🗑
|
||||
| _____ are used in 6pulse and 12pulse equipment with electronic timers | show 🗑
|
||||
| A Thyristor is what | show 🗑
|
||||
| Thyratron is what | show 🗑
|
||||
| Electronic timers are accurate down to ______ time | show 🗑
|
||||
| show | Automatic Exposure Control
🗑
|
||||
| show | 1.phototube(photomultiplier)
2.Ionization chamber
🗑
|
||||
| show | To shut off exposure in case of malfunction that causes the exposure to continue even after adequate image is acquired
🗑
|
||||
| The primary circuit of the Filament circuit supplies the heating current, but the current must be reduced to __-__ amps and __-__ volts by the rheostat | show 🗑
|
||||
| Rheostats function using ____ law | show 🗑
|
||||
| show | Voltage
🗑
|
||||
| Filament transformers are ____ ____ transformers | show 🗑
|
||||
| Filament transformers must be immersed in oil to provide sufficient insulation between the high voltage primary coil and the low voltage secondary coil. True or False | show 🗑
|
||||
| In modern xray units a ____ ____ _____ automatically adjusts the filament current to maintain constant ma over a wide range of Kv | show 🗑
|
||||
| show | secondary
🗑
|
||||
| show | milliammeter
🗑
|
||||
| Milliammeters are grounded together with the midpoint of the secondary coil of the transformer it is at zero potential and can be safely mounted to the control panel. True or False | show 🗑
|
||||
| show | milliammeter, ammeter
🗑
|
||||
| show | True
🗑
|
||||
| the ______ does not register until the xray switch is closed (type of meter) | show 🗑
|
||||
| when the main switch is closed but the exposure switch is open the _____ ______ and _______ should normally be activated (types of meters) | show 🗑
|
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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Created by:
Ravann
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