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The Use of Vectors in Computing AC Currents and Pressures Series Parallel and Poly
phase Circuits 49
Power Power Factor SinglePhase Circuits
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60 cycles alternating current amperes armature armature current armature reaction cent circuit coil group collector rings component Compute condenser conductors copper loss core loss counter emf delta connected direct current direct-current effective value efficiency electrical degrees emf of coil equal equation Example field current flow flux density frequency henry inductance impedance impressed voltage increased indicated in Fig induced emf induced voltage induction motor instant instantaneous values lagging lamps leading line current line voltage line wires machine magnetic maximum value neutral ohms operate output parallel phase difference polar polyphase PR loss primary ratio reactance drop reactive regulation repulsion motor resistance resultant emf reversed rotating secondary Selsyn short-circuit shown in Fig sine curve sine wave single-phase slip slots per pole squirrel-cage starting torque stator supply synchronous condenser synchronous motor synchronous speed terminal voltage three-phase torque transformer two-phase unity power factor vector diagram vector sum volts wattmeter watts zero