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12 Cards in this Set
- Front
- Back
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AC differs from DC in voltage and what characteristics? |
Current |
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AC is an electrical current that changes in both _____ and _____ . |
Magnitude and direction |
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The sine wave is a graphical representation of AC over a period of what? |
Time |
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What is Period? |
The time it takes to complete one sine wave |
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What is Frequency? |
The number of complete cycles that occur in one second |
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What is an electrically controlled switch that can open and close under con tell of another electrical circuit? |
Relay |
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What is a Fuse? |
A protective device that will stop current flow by melting a filament |
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Understanding wavelength is critical in designing what? |
Antennas |
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A sine wave consisting of a positive alternation and a negative alternation is what? |
A Cycle |
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How is Frequency found? |
1/Time |
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How is Time found? |
1/Frequency |
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What measures the actual distance between the beginning and end of one cycle of an AC signal? |
Wavelength |
