2018年新版初级中级电工基础知识合集大全

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料.第一章

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t

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Qt(C)t(s)A1()(mA)(1kA=10A1A=10mA

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S

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21.710m1m1mmz1.7201—111

20

m)铜料

1.6101.710

3333.铝

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Q(J)；I通(A)(t(S)料6262.。一()至过A10J。4)P

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1.2

PI

20000§12

4个成3。料.23

12

料rr.§13I

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UI

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UUU

URUR1RR(11212

R1R1R2R1

18料.(额在12灯。用电联方法限制节电中电流在电测中普用串电阻来。1—9b是。：1U1

n2III1

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n3阻)：11RR1

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1Rn式1—18并：R1

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的的的间阻间．通体热叫_热多与_平成比与电是_。7的。是V过A110V110WV?V。3=5，R。

，V的3220VWWV的。WV电?。VV少?明)?。、。料.第二章

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(mT/(H/m)

H/m0把任比r

0少<1r>1rr(料.表2。表—1

几种磁质的对导率

r钴镍1钢7115§2的磁导的些，—3而“。时2所示：了讨起见规定用号，

分别示流磁应线垂进料.()k2N2?料.2626a2F)()手着N心四对匀度及F料22.

m)IL(m)F(N)四磁场通电圈的用28adadbcad=bc(23)adO'2§23电磁、AB269a2料.2210b)“”料.210

t1

t22

tt221

2tt2e

(V)

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1.导料.212223料.第三

正交流电路本章习要点RRL40物格sincostan

f(几§31正弦流电正弦流点()料.()31)31b12.3jNS上料22.3

BmOOaBsinm

a2m2NBlsinm

NBmlmEmBm)lm/s(33)(3sinm

ttEm

t料3633336333.Ui

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L

XL2LLX()Lf(Hz)L3=0.1Vf000f12

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IU/

0.1/0.628

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Q(C)(V)(F)l1F(

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F1pFF13料66.UII1XCXC

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500.159

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100料.§353.3U1，W2当匀旋差120Esin(Um=EV

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