Mowat, Harold, 1883- · London : H. Frowde · leaf 58
dividedinto ten fractions in this case, each of which, ifthe periodicity was 50 per second, would representl-500th of a second. An alternating current without some modification SOURCES OF SUPPLY, ETC. 43 is not suitable for working with an induction coil,for although the current, reversing its… … Fig. 14. Alternating Current. secondary current unidirectional, and for this pur-pose an instrument called a motor generator may beemployed, which can be defined as an electric motor,used to generate a current of a different characterfrom the one supplied to it. It consists of a motorand a dynamo…
X-rays
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