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MAG-EMAG-Circuirt
| Question | Answer |
|---|---|
| What are two kinds of electrical charge | positive and negative |
| A material that disallows the flow of electrons is known as a(n) | insulator |
| What is related to the force applied to an electrical charge | electromotive force (EMF), potential difference, voltage |
| The only meter found on the secondary side of the High Tension (step-up) transformer | mA meter |
| What is it called when a current is induced in a secondary coil by simply alternating the current in the primary coil | mutual induction |
| What is the unit of electrical power | watt |
| Single-phase full-wave rectified current has ____ % ripple. | 100 |
| According to Ohm’s law, what would the voltage be if the resistance is 2 ohm and the current is 4 ampere | 8 volt |
| What is the unit of electrical current | ampere |
| How would cutting the distance between two magnets in half effect the attraction force between them | it would increase four times |
| The two types of electromagnetic induction are | self induction and mutual induction |
| A coil of wire rotating through a magnetic field produces an electric current. What does this describe | generator |
| What is a current carrying coil of wire called | solenoid |
| An electrostatic force is created when a(n) | proton approaches a proton |
| What are materials called that are not attracted to a magnet | paramagnetic |
| The flow of electrons is known as | current |
| The x-ray tube works on the same principle as which of the following? | diode |
| Which of the following causes electrons to move in a conductor | voltage |
| Self induction is used in the operation of what device | autotransformer |
| According to the right hand rule of thumb, if the direction of the electric current reverses, the direction of the magnetic field will _______________. | reverse |
| What are materials called that are weakly attracted to a magnet | paramagnetic |
| A material that freely allows the flow of electrons is known as a(n) | conductor |
| Which of the following is normally measured in volts | electric potential |
| What type of transformer has more turns of wire in the secondary side than in the primary side | step up |
| The intensity of a source at 15 inches is 10 mGy. What is the new distance if the intensity is now 1.11 mGy? | 45 |
| When charged particles move in a straight line, a magnetic field is | created perpendicular to the particle motion |
| Ripple refers to | the fluctuation in voltage in the electricity |
| Which type of current is supplied by a battery | direct |
| An electrical charge can be neutralized if it is routed to what | the ground |
| What surrounds every electric current | magnetic field |
| The frequency of electromagnetic radiation is | measured in hertz |
| The strength of the magnetic fields in a transformer is increased by | coiling the wires and letting their magnetic fields overlap |
| The devices that change alternating to direct current are the | rectifiers |
| What are the magnetic lines called that surround a magnet | flux lines |
| Electromagnetic radiation | exists only if its velocity is 3 x 10^ 8 m/s |
| The lower the ripple, | the more consistent the energy of the x-rays produced |
| This is harmful to the x-ray tube. | inverse voltage |
| The intensity of a source is 25 R at 40 inches. What will the intensity be at 20 inches? | 100 |
| A single unit of electromagnetic radiation is also called a(n) | photon |
| Determining which filament will be used during an exposure is done at the operating console by the selection of | small or large focal spot |
| Electromagnetic induction is the process of causing an electrical current to flow in a conductor | when it is placed in the magnetic field of another conductor |
| Place the events leading to the production of x-rays in order, from first to last: | alternating current is converted to direct current voltage is adjusted at the autotransformer kilovoltage leaves the step-up transformer voltage goes to primary side of step-up transformer |
| Electric motive "force" (EMF) is related to which of the following terms? | electric potential |
| Electromagnetic radiation travels | in waves along a straight line |
| When electrons move in a copper wire | resistance to the electron flow will always exists |
| Finish the follow statement: " A charged particle in motion will | create a magnetic field at right angles |
| A general purpose radiographic tube typically has ___________ filament(s). | two |
| This serves the same role as the timer. | AEC |
| How much current is needed to heat the filament enough to produce a 100–1000 mA tube current? | 5 A to 7 A |
Created by:
DeAndreMitchell
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