Electrical Technology: A Textbook for the Following Examinations: National Certificate, City and Guilds, I. E. E., B. Sc. Engineering |
Contents
ALTERNATINGCURRENT COMMUTATOR MOTORS | 8 |
CHAPTER II | 27 |
CHAPTER III | 41 |
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Common terms and phrases
air gap alternating alternating current ampere-turns amperes angle anode applied voltage armature armature current armature reaction back e.m.f. booster brush C₁ calculated capacitance capacitor cent characteristic charge circuit commutator component conductors connected constant convertor copper loss core curve demagnetizing density direct current direction e.m.f. induced E₁ E₂ efficiency electrical electrons energy equal equation excitation feeder flux frequency full-load given Hence hysteresis I₁ increase induced e.m.f. induction motor instant intake lagging leakage lines of force London Univ machine magnetic field maximum method no-load normal output parallel phase pole polyphase positive potential power factor primary produced proportional R₁ R₂ R₂² reactance resistance reversed rotating field rotor rotor current secondary short-circuit shown in Fig shunt single-phase slip slots stator supply switch synchronous motor synchronous speed temperature terminal voltage three-phase torque transformer volts W₁ Ward-Leonard control wattmeter wave winding zero