## Alternating current fundamentals |

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### Contents

Introduction to Alternating Current | 1 |

Alternating Current Circuits Containing Resistance | 13 |

Inductance in Alternating Current Circuits | 27 |

Copyright | |

18 other sections not shown

### Common terms and phrases

a-c circuit alternating current ammeter amperes AMPS armature autotransformer capacitive reactance capacitor centrifugal switch coil current coil winding component constant copper losses Cosine current and voltage current transformer cycles decrease delta delta connection delta-connected Determine dielectric effective resistance electrical degrees energy excitation current formula frequency full-load in-phase increase induced e.m.f. induced voltage induction-run motor inductive reactance input instantaneous instrument lag power factor leads line current line voltage line wires low-voltage meter no-load noninductive ohms operation output parallel circuit phase angle phase winding plates polarity potential coil power in watts primary winding rated load repulsion motor resistor rotating secondary winding selsyn series circuit shown in Fig single-phase squirrel-cage induction motor starting torque starting winding stator windings supply switch synchronous motor synchronous speed terminal voltage three-phase three-wire torque transformer bank true power unity power factor vector diagram volt-amperes voltage drop voltage regulation voltmeter volts wattmeter wye-connected zero