Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 248
wing in the direction pointed by the fingers. Of course, if we know the direction of the current, and wish to find thenorth pole of the magnet, placing the hand on top of the coil, as above, withthe fingers extended in the direction in which the current is flowing, thenorth pole of the core is in… … DYNAMO •. RIGHT HAND.Fig. 12. Direction of Current in a DynamoArmature. A simple rule is: facing the commutatorof the dynamo, speaking now especially ofthe bipolar type, and assuming the left poleto be north or -f-. and the armature tobe revolving counter clock-wise, then thecurrent is flowing to…
Electrical engineering
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