## Basic electricity |

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### Contents

Part | 1 |

DirectCurrent Series and Parallel Circuits | 57 |

DirectCurrent Compound and Bridge Circuits | 75 |

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### Common terms and phrases

3-phase ampere-hour amperes angle apparent power applied voltage armature armature current battery brushes capacitance capacitor cause cell charge circular mils coil commutator conductor connected in series constant copper core counter e.m.f. current flow cycle d-c motor decrease diagram dielectric direct current direction effective electrical electrolyte energy equal equation example field current frequency hysteresis impedance increase indicated induced voltage inductor input insulation iron lags leads line current line voltage lines of force loss magnetic field magnetomotive force maximum meter negative Ohm's law ohmmeter ohms operation output parallel circuit percent phase plates polarity positive power factor primary reactance rectifier resistance resistor rheostat rotation rotor rotor current secondary series circuit series motor shown in figure shunt motor single-phase solder source voltage speed stator supply switch synchro terminal voltage torque transformer transmitter triangle true power turns varies vector voltage drop voltmeter volts wattmeter watts wire zero