34757174
Description
Flashcards by That Yeti Dog Person, updated more than 1 year ago
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Created by That Yeti Dog Person
about 3 years ago
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| Question | Answer |
| The 5 characteristic values of AC current/voltage are: _______ values, _____(___) values, _____ values, ____ value, and ____(__) values. | instantaneous, maximum (peak), peak-to-peak, average, effective (rms) |
| The value of AC current at any instant on a sine wave graph is its _____ value. | instantaneous |
| The ____ value is the highest instantaneous value of voltage/current reached in either direction during one cycle. | peak (aka maximum) |
| There's 2 peak values in one cycle: the ____ peak and the ____ peak. | positive, negative |
| The peak ____ value in an AC circuit is important for determining the size of conductor sufficient to carry the current. | current |
| The peak ____ value in a AC circuit should be considered when the conductor insulation is selected. | voltage |
| The _____ value is the change of voltage/current from the positive peak value to the negative peak value. (basically 2x one of the values) | peak-to-peak |
| The peak-to-peak value of a voltage wave can be measured with an _____. | oscilloscope |
| The ____ value of an AC current/voltage is found by calculating the average of all instantaneous values during on alternation. | average |
| The ____ value of AC current is equal to 0.636 times its peak value. | average |
| The _____ value of an AC current/V is the value that will have the same heating effect as a know DC current/V. Ex: if an unknown AC has the same heating effect as a DC of 10A, the AC is known to have an (___) of 10A. | effective aka rms |
| If the peak value is know, the rms value can be determined with this formula: ______. | Irms = 0.707 x Ipk (turn I to E for voltage formula) |
| AC can't be measure like DC because it's always changing. So it's measured by its _____. | effects |
| AC's most reliable effect is the heat produced by the current, because the amount of heat depends on the amount of current and isn't influenced by the direction of flow. So, if an AC produces the same amount of heat as a given DC, we know that it has an rms value equal to that of the DC. | no answer, just memorize the front, bleh |
| formula for average current: _________. | Ia = 0.636 x Ipk |
| formula for peak voltage: _________. | Epk = 1.414 x Erms |
| formula for power loss: _________. | P = I(sqrd) x R |
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