alternating current

noun

an electric current that reverses direction at regular intervals, having a magnitude that varies continuously in sinusoidal manner. Abbreviation: ac

Compare direct current.

Origin of alternating current

First recorded in 1830–40

Words nearby alternating current

alternate hemianesthesia, alternate host, alternately, alternate plumage, alternating calculus, alternating current, alternating-gradient focusing, alternating group, alternating hemiplegia, alternating light, alternating pulse

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for alternating current

The study of the alternating-current arc has suggested a number of new experimental problems for investigators.
Encyclopaedia Britannica, 11th Edition, Volume 16, Slice 6|Various
In alternating-current circuits its place is taken by the dynamometer type, which reads both direct and alternating currents.
The New Gresham Encyclopedia. Vol. 1 Part 2|Various
For alternating-current systems must have the two or more conductors of the circuit enclosed in one metal armor.
Motion Picture Operation, Stage Electrics and Illusions|Henry C. Horstmann
The alternating-current transformer is another gift of Faraday to the commercial world.
Beacon Lights of History, Volume XIV|John Lord

I am supposing that our plant consists of an alternating-current dynamo with a small exciter.
Wrinkles in Electric Lighting|Vincent Stephen

British Dictionary definitions for alternating current

alternating current

noun

a continuous electric current that periodically reverses direction, usually sinusoidallyAbbreviation: AC Compare: direct current

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Cultural definitions for alternating current

alternating current

An electric current (see also current) in which the flow reverses periodically. (Compare direct current (DC).)

notes for alternating current

In the United States, most household current is AC, going through sixty reversal cycles each second. Electric motors in household appliances are designed to work with current at this rate of reversal.

Scientific definitions for alternating current

alternating current

[ ôl′tər-nā′tĭng ]

An electric current that repeatedly changes its direction or strength, usually at a certain frequency or range of frequencies. The term is also used to describe alternating voltages. Power stations generate alternating current because it is easy to raise and lower the voltage of such current using transformers; thus the voltage can be raised very high for transmission (high voltages lose less power as heat than do low voltages), and lowered to safe levels for domestic and industrial use. In North America, the frequency of alternation of the direction of flow is 60 Hz, or 60 cycles per second. In other parts of the world it is 50 Hz. Compare direct current. See Notes at current Tesla.

单词	alternating current
释义	alternating current noun an electric current that reverses direction at regular intervals, having a magnitude that varies continuously in sinusoidal manner. Abbreviation: ac Compare direct current. Origin of alternating current First recorded in 1830–40 Words nearby alternating current alternate hemianesthesia, alternate host, alternately, alternate plumage, alternating calculus, alternating current, alternating-gradient focusing, alternating group, alternating hemiplegia, alternating light, alternating pulse Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for alternating current The study of the alternating-current arc has suggested a number of new experimental problems for investigators. Encyclopaedia Britannica, 11th Edition, Volume 16, Slice 6\|Various In alternating-current circuits its place is taken by the dynamometer type, which reads both direct and alternating currents. The New Gresham Encyclopedia. Vol. 1 Part 2\|Various For alternating-current systems must have the two or more conductors of the circuit enclosed in one metal armor. Motion Picture Operation, Stage Electrics and Illusions\|Henry C. Horstmann The alternating-current transformer is another gift of Faraday to the commercial world. Beacon Lights of History, Volume XIV\|John Lord I am supposing that our plant consists of an alternating-current dynamo with a small exciter. Wrinkles in Electric Lighting\|Vincent Stephen British Dictionary definitions for alternating current alternating current noun a continuous electric current that periodically reverses direction, usually sinusoidallyAbbreviation: AC Compare: direct current Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Cultural definitions for alternating current alternating current An electric current (see also current) in which the flow reverses periodically. (Compare direct current (DC).) notes for alternating current In the United States, most household current is AC, going through sixty reversal cycles each second. Electric motors in household appliances are designed to work with current at this rate of reversal. The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. Scientific definitions for alternating current alternating current [ ôl′tər-nā′tĭng ] An electric current that repeatedly changes its direction or strength, usually at a certain frequency or range of frequencies. The term is also used to describe alternating voltages. Power stations generate alternating current because it is easy to raise and lower the voltage of such current using transformers; thus the voltage can be raised very high for transmission (high voltages lose less power as heat than do low voltages), and lowered to safe levels for domestic and industrial use. In North America, the frequency of alternation of the direction of flow is 60 Hz, or 60 cycles per second. In other parts of the world it is 50 Hz. Compare direct current. See Notes at current Tesla. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
随便看	wałbrzych wałęsa wb wba wbc wbfp wbn wbo w boson wbs wbu wc wcc w.c.t.u. wd wda wdc wdll wdm we wea weak weak accumulation point weak as a kitten weaken