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Switch for reversing the direction of an electric current
Answer for the clue "Switch for reversing the direction of an electric current ", 10 letters:
commutator
Word definitions for commutator in dictionaries
Wikipedia
Word definitions in Wikipedia
In mathematics , the commutator gives an indication of the extent to which a certain binary operation fails to be commutative . There are different definitions used in group theory and ring theory .
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Commutator \Com"mu*ta`tor\, n. (Elec.) A piece of apparatus used for reversing the direction of an electrical current; an attachment to certain electrical machines, by means of which alternating currents are made to be continuous or to have the same direction. ...
WordNet
Word definitions in WordNet
n. switch for reversing the direction of an electric current
Douglas Harper's Etymology Dictionary
Word definitions in Douglas Harper's Etymology Dictionary
1839, agent noun in Latin form from Latin commutare (see commute (v.)).
Wiktionary
Word definitions in Wiktionary
n. 1 an electrical switch, in a generator or motor, that periodically reverses the direction of an electric current 2 (context mathematics English) (''of a group'') an element of the form ''ghg −1 h −1 '' where ''g'' and ''h'' are elements of the group; ...
Usage examples of commutator.
It was in that city that I made a decided advance, which consisted in detaching the commutator from the machine and studying the phenomena in this new aspect, but still without result.
The consummation of the experiment was, however, delayed until the summer of that year, when I finally had the satisfaction of seeing the rotation effected by alternating currents of different phase, and without sliding contacts or commutator, as I had conceived a year before.
The call was done from the commutator of a hotel of Santa Lucia of the Sea.
Within the Sleeve were arrangements for coupling pipes and electrical cables via sliding ring joints and various commutator linkages, and for automatically moving cabs inward or outward between tubes terminating inside and outside the Sleeve.
Through an electrical arrangement involving rotating commutators, the proper sequence of pulses is sent out when a character's key is struck on the keyboard.
A line of fifty trucks from the Zenith Steel and Machinery Company was attacked by strikers-rushing out from the sidewalk, pulling drivers from the seats, smashing carburetors and commutators, while telephone girls cheered from the walk, and small boys heaved bricks.
It was in the second year of my studies that we received a Gramoe Dyname from Paris, having the horseshoe form of a laminated field magnet, and a wire wound armature with a commutator.