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17 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What are the six most common methods of producing electromotive force? |
Magnetism, Friction, Pressure, Heat Light, Chemical Action. |
M,F,P,H,L,EF |
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What three fundamental conditions must exist before a voltage can be produced by magnetism? |
Conductor, magnetic field, relative motion between the field and the conductor. |
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How is voltage created with magnetism? |
By a conductor, or cunductors moving across magnetic field so as to cut the lines of forceelectrons within the conductor are impelled in one direction or another. |
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What is the main application of voltage produced by friction? |
Van De Graf Generators |
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What type of materials are used to produce photoelectric voltage? |
silver oxide or copper oxide. |
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Electricity is a combination of a force called voltage and the movement of invisible particles known as? |
Current. |
I |
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In the equation I=E/R, what does each mean? |
I = Intensity of Current (AMPS) E = Difference in Potential (VOLTS) R = Resistance (OHMS) |
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In a DC circuit, power is equal to the product of whaT? |
Voltage and the current, P=IE |
pie |
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How many basic formulas can be derived from OHMS law? |
12 |
E=IR |
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In a DC circuit, the total resistance is the sum of what? |
The resistances of the individual parts of the circuit. |
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What formula determines AC voltage frequency? |
F=polesXRPM/ 120 |
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The amount of opposition to current flow in an AC inductive circuit is referred to as? |
Inductive reactance. |
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In accordance with OHM's law for AC circuits, the effective current through a circuit is? |
Directly proportional to the efffectice voltage and inversely proportional to the impedance. |
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Whatis the equation used to express OHM's law when dealing with AC circuits? |
I=E/Z I = Current E = EMF Z = Impendance in OHM's |
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The conductors in 2which the output voltage is generated in an AC type generator is referred as? |
Armature windings in an AC generator. |
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The conductors in an AC generator in which the Electromagnetic field originates is called? |
Field windings. |
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Relative motion in an AC generator is created by? |
The rotor/stator. |
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