A Dictionary of Electrical Words Terms and Phrases Second by Edwin James Houston

By Edwin James Houston

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The movement of these wires or conductors the through magnetic on field of the machine produces an electiic current by means of the electromotive forces so generated. Sometimes the field is rotated some; times both armature and field rotate. The armatures of dynamo-electric machines are of a great variety of forms. : Cylindrical or drum-armatures, disc -ormatures, pole-or-radial armatures, ring armatures, and spherical. armatures. For further particulars see above terms. Armatures are also divided armature H -shaped or girder-like core.

The obtained by the use of the baitery invented by The term arc was given to it from the Volta. shape of the luminous bow or arc foimed between in the end of the positive carbon is seen in Fig. 18. the carbons. On To are form the voltaic arc the carbon electrodes first placed in contact and then gradually tween them, which carbon. The electrodes are consumed, first, influence of the electric current heat. As a result posit of the electrically volatilized by and the intense Fig. 18. of the formation of the arc, a crater The nipple, greater part of the current flows.

The source of light of the electric arc lamp. It is called a partial conductor of carried bodily forward from the positive to the negative carbon through the space of the voltaic and trodes or terminals, generally of carbon, of a sufficiently powerful source of electricity, when arc electricity. S. P. " The obtained by the use of the baitery invented by The term arc was given to it from the Volta. shape of the luminous bow or arc foimed between in the end of the positive carbon is seen in Fig. 18.

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