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AC Fundementals
Study aid for Apprentice Electricians
| Question | Answer |
|---|---|
| The % of change in one time constant. | 63.2% |
| Self induced voltage will always oppose the applied voltage by_____degrees. | 180 |
| Inductance is measured in? | Henries (H) |
| Capacitance is measured in? | Farads (F) |
| One cycle has how many alterations? | Two (2) |
| Higher frequency on a given value capacitor will cause current to? | Increase |
| The amount of charge on the plates of a capacitor is a function of? | Current and Time |
| The formula for finding a RMS value is? | Emax or Imax times sine(45) |
| In a capacitor, the electric energy is stored in a(n)___________ Field. | Electrostatic |
| What is an example of a variable capacitor? | A radio tuner |
| In an inductor, electric energy is stored in a(n)____________ field? | Electromagnetic |
| Mica, paper and electrolytic are three types of: | Capacitors |
| The effective value of AC is based on the heating effect of the equivalent DC. | True |
| When current and voltage peak in the same direction at the same time it is called: | In Phase |
| The inductance symbol is | L |
| The total opposition to current in an AC circuit is; | Impedance |
| Inductance opposes a change in: | Current |
| Volts per millimeter is used to measure: | Dielectric Strength |
Created by:
ScottLetwin
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