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DYNAMO AND ELECTRIC-MOTOR BUILDING

CHAPTER I

Introduction : Dynamo-Electric Currents

The Magnetic Field. — The whole theory of dynamo or electric-motor action depends on the simple fact that when a conducting, circuit is moved across a magnetic field electric currents are set up in it. This is called " electro-magnetic induction of currents."

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Fig. 1.—The "Field"... (More)