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alternating alternating current ammeter ampere ampere-turns angle anode applied voltage armature armature current armature reaction back e.m.f. booster brush Calculate candle power capacitance capacitor cathode cent characteristic charge circuit coil commutator component conductors connected constant copper loss core curve dielectric direct current direct-current direction drop e.m.f. induced efficiency electrical electron energy equal excitation feeder flux frequency full-load given Hence hysteresis increase induced e.m.f. induction motor instant intake iron lagging lamp lines of force load London Univ machine magnetic field maximum method normal output parallel phase pole position potential power factor primary produced proportional ratio reactance rectifier repulsion motor resistance result reversed rotary convertor rotating field rotor secondary short-circuit shown in Fig shunt single-phase sinusoidal slip slip-rings slots stator supply switch synchronous motor synchronous speed temperature terminal voltage three-phase torque transformer voltmeter volts wattmeter wave winding zero