2018年新版初級中級電工基礎知識合集大全

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.........................................................................................................................................5—............................................................................................................................................10—

1111..........................................................................................................................................................12—1313——18192121

....................................................................................................................................................................22.........................................................................................................................23—..........................................................................................................................................................2324..........................................................................................................................................................25—2626料.272829—29............................................................................................................................................29.................................................................................................................................................3131............................................................................................................................................33—33...............................................................................................................................................................33...............................................................................................................................................................35

...............................................................................................................................................................35.............................................................................................................................37—373738—404141—............................................................................................................................................43.................................................................................................................................................44.................................................................................................................................................45.................................................................................................................................................46—495051—53

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.............................................................................................................................77—...............................................................................................................................................................77..........................................................................................................................................................8082..........................................................................................................................................................83—............................................................................................................................................84858687190料

................................................................................................................................................................91......................................................................................................................................92—

9393—9596—989999

料.第一章

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t

I

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

)1料3333.1AC8AAB12b)Ra

U

ab

1ababV(mV)10Vl10mVB泵入A也證EV12b料332332.2.8VR1(k)(M)k10k

S

()L—(m)Smm1mmm

21.710m1m1mmz1.7201—111

20

m)銅料

1.6101.710

3333.鋁

WUItI

t3)P

Wt(13)14UII

4)/WWmW料6262.電的的4各各。(kW·h)表示器

10例1臺(1米)300W開機0.48(以)：Pt=3×365=1095WkW·h為3機)過1為W)定DVD?IRt

Q(J)；I通(A)(t(S)料6262.。一()至過A10J。4)P

WQtt

1.2

PI

20000§12

4個成3。料.23

12

料rr.§13I

U

IU(V)()1.UIR2.

UI30.427AV(19)R

UI

515.20.4276

I

料.I

Rr

I(V)()r()(1)Rr(110)IrIr

UIr(1111)UIr2.3313

I

Er

UIr

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n2料121122121122.U1

n3)RR12nUIRUIR…IR1222

UUU

URUR1RR(11212

R1R1R2R1

18料.(額在12燈。用電聯(lián)方法限制節(jié)電中電流在電測中普用串電阻來。1—9b是。：1U1

n2III1

…

n3阻)：11RR1

…

1Rn式1—18并：R1

R12R12料nnnn.I1nIn1II(1(3)§15定功率{絕理種料.(()1.壓10V50V250V5001五10.25V10VmA×l00×k料.。限(程)。為190V250VV大190V且250V擋500VV機擋的擋位幾個不同的倍率。由于機械表的指針個刻％％，讀比準確尤阻擋對的表刻均勻，這個擋電。2頭圖11為0k擋取時圖1—13所kk線于壓500V為圖電V215×(500÷250)=430V的。料.20mA為15.5為。3表筆般12.3。位的。。調。。及。的法萬位擋(一料22.為。

的的的間阻間．通體熱叫_熱多與_平成比與電是_。7的。是V過A110V110WV?V。3=5，R。

，V的3220VWWV的。WV電?。VV少?明)?。、。料.第二章

電磁基本知本學習點1、2規(guī)3“突……”……，時一因為個系導們電暫突故§21磁的基本知磁和()N()。料.2NS21S222.3-稀“韋Wb表向料2222.

(mT/(H/m)

H/m0把任比r

0少<1r>1rr(料.表2。表—1

幾種磁質的對導率

r鈷鎳1鋼7115§2的磁導的些，—3而“。時2所示：了討起見規(guī)定用號，

分別示流磁應線垂進料.()k2N2?料.2626a2F)()手著N心四對勻度及F料22.

m)IL(m)F(N)四磁場通電圈的用28adadbcad=bc(23)adO'2§23電磁、AB269a2料.2210b)“”料.210

t1

t22

tt221

2tt2e

(V)

(Wb)(s)(25)行證料.2211a21lb1()(右手)211b兩7即a11a料.'ab2N2電磁律§24感、感、感213a中泡HL1泡圈L圈料3333.213bHL??1H際(101mHLLL利)料.2S

1.導料.212223料.第三

正交流電路本章習要點RRL40物格sincostan

f(幾§31正弦流電正弦流點()料.()31)31b12.3jNS上料22.3

BmOOaBsinm

a2m2NBlsinm

NBmlmEmBm)lm/s(33)(3sinm

ttEm

t料3633336333.Ui

§323T(s)(ms)(1s10

lf(MHz)(GHz)1MHz=101GHz=10f

f50Hz50Hz弧/)

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料.)iImmmeEiI

(39)EUIEEE0.707U

III

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.312

1

2E1Et

t1

t2

t

=0

AX

=01=90te21m

1

12

=902212135

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2

21

e12

1

=1OOsin(100etV1（1料.

100V

E

m2

2f12

50Hz232

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0.02s4100603051

266012§33e

sin(isin(2f

U=310Vm

30

sin(mm料.s

310sin(100310sin(60310V二正曲線-法t

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/

L

XL2LLX()Lf(Hz)L3=0.1Vf000f12

fHz1X

L1

fL

IU/

0.1/0.628

fMHz2X

L2

L2

628I/

0.1/628159000!

X000L著(等)如極3則料.QQ

Q

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

)(pF)

F1pFF13料66.UII1XCXC

C

1/

1/2f題Hz和50HzMHz

f1

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UX

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