## Principles of Electricity and Electromagnetism |

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Page 403

Two - and three - phase motors , however , are unidirectional owing to the

sequence of the windings , as will be brought out more clearly in the discussion

of the rotating magnetic field . 12 . 6 . The

Two - and three - phase motors , however , are unidirectional owing to the

sequence of the windings , as will be brought out more clearly in the discussion

of the rotating magnetic field . 12 . 6 . The

**Transformer**. — Though the**transformer**is not ...Page 409

The line potentials are equal to the vector differences of the winding potentials , i .

e . , V3 times them in magnitude , and the line currents are equal to the winding

currents . Representative three - wire three - phase

The line potentials are equal to the vector differences of the winding potentials , i .

e . , V3 times them in magnitude , and the line currents are equal to the winding

currents . Representative three - wire three - phase

**transformer**connections are ...Page 458

Gaylord Probasco Harnwell. core losses which are generally small and which

can be represented by a resistance across the primary . Thus the approximate

circuit for the

reactances ...

Gaylord Probasco Harnwell. core losses which are generally small and which

can be represented by a resistance across the primary . Thus the approximate

circuit for the

**transformer**can be drawn as in Fig . 14 . 3 . Resistances andreactances ...

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angle applied approximately assumed atom axis becomes calculated capacity carrying cell characteristic charge circuit closed coil component condition conducting conductor connected considered constant curve density depends determined dielectric difference direction discharge discussion distance effective electric electrons element energy equal equation evident expression factor field flow flux force frequency function galvanometer given grid hence impedance important increases indicated induction integral ions known length limited linear load losses magnetic magnetic field magnitude maximum means measured mechanical metal meter method negative normal obtained oscillations parallel path period phase placed plate positive potential present produced proportional quantities radius ratio reduced region relation represents resistance respect result rotation seen separation Show shown simple solution space surface temperature terminals transformer tube unit vector volts volume wave wire written zero