电工学试题库和试题及答案

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ᵯὃᜧஹᵯ
ᵯIIஹṹ15011550.ஹឋஹὃ᪶ᑁ#1ᵯ$%ᑖa.ᵯ$Ḅ)*ᭆ,-ᑖ᪆/0)12345678ᵯ96:ᵨᡚ=>4ᳮஹᵯ9Ḅ@ᦔBᣚஹᙠE4ᳮ@/0ᑖ᪆FGᵯ$6ᨬᜧI᳛KL஺b.ᵯ$Ḅᨚ᝱ᑖ᪆ᵯQRᵯ#ḄSTᱯឋVWXYὶ@ᦔ6ᵯ$Ḅᨚ᝱ஹ[᝱VW\]^ᦪḄᭆ,6`abḄcd,▤gឋᵯ$ᨚ᝱ᑖ᪆Ḅh⌕j0஺c.lmn᝱ᑖ᪆W⚣᳛ᱯឋlmpḄqr⊤t06ᵯ$)*45Ḅqᤎvwஹxyᢙ-qᡃ||,ᵨq~0ᓫlmGᵯGᵯ$Ḅ/06ᨵII᳛ஹI᳛ᦪḄᭆ,-/06II᳛ஹᙠI᳛Ḅᭆ,-I᳛ᦪḄ6lmGᵯ$Ḅᡚ=@ᦔᵯ$VWᨬᜧI᳛KLḄᩩ6hqGᵯ$ᵯ9-Ḅὶ/w6qḄᭆ,6hqᵯ$Ḅᑖ᪆6ᘤ-ᦪḄᭆ,6ḄᑖR
ᳮ6Gᵯ$Xὶ¡-Yὶ¡Ḅᩩஹᱯ¢-⚣᳛ᱯឋ஺2ᦪ¤¥¦ᵯ$%ᑖa.§ᔠ¥¦ᵯ$:Rªஹᡈªஹ¬ªஹR¬ªஹᡈª@¥¦ªᵯ$Ḅ¥¦I®,¥¦ᦪḄ)*¯0ᑣ,ᓫ§ᔠ¥¦ᵯ$Ḅᑖ᪆-±VWᵨᓱ³´ᓄ¥¦ᦪḄ/0஺b.\¥¦ᵯ$R-S¹xᘤஹJ-K¹x¼ஹD¹xᘤḄ¥¦I®6¾¿ᘤஹᦪᘤ@\¥¦ᵯ$Ḅ
ᳮ஺3ÁÂᵯ$%ᑖa.᩽Ä᩽ÄஹnÅÄḄ
ᳮ-ᱯឋÆg6ᳮÇ᩽Äᵯ$Ḅᑖ᪆R6ᓫq᦮Gᵯ$'ᵯ$-nÅÄnÅᵯ$Ḅ
ᳮb.Ëᜧᵯ$ḄᑖR᜜ᱯឋËᜧᵯ$ḄᑖRᱯឋÍᦪ6ᔜÏËᜧᵯ$Ð]Ḅᣚ6ÑÒËᜧḄᭆ,6ᔜÏᳮÇËᜧᵯ$Ḅᱯឋ6ÓÔËᜧᵯ$Ḅ
ᳮ6ÓÁÕÖ-ᐳÁÕÖḄᭆ,஺c.ØᦔÙÄMOSØᦔÙÄḄÜ*Ý᪀ஹ3ß
àáVWᱯឋ/6ᐳ9᩽ᓫÄËᜧᵯ$Ḅ)*Ý᪀-
ᳮ6☟᝱
ãḄä6ᓄḄåÕÖ@ᦔᵯ$Ḅᑖ᪆069᩽LæᘤḄÝ᪀R)*ᱯã஺d.᩽ÝèᨔêÄᐳë᩽ᓫÄËᜧᵯ$Ḅ)*Ý᪀-
ᳮ6☟᝱
ãḄä6ᓄḄåÕÖ@ᦔᵯ$Ḅᑖ᪆06ë᩽LæᘤḄÝ᪀R)*ᱯã஺e.¯íËᜧᵯ$ᳮǯËᜧᘤḄᱯឋ6“ïð”R“ïð”Ḅᭆ,6ᵫᳮǯóËᜧᘤ᪀ᡂḄõqLᐭஹ÷-Lᐭ-ÓÔLᐭhϧ᝱ᵯ$஺ø1ùFGᵯ$ú⚪Íὃüᫀஹþÿ⚪
1.᦮ḄᵯᨵᵯஹᦟV3ᑖᡂ஺ᐹᨵᓫ$,ᵯ&ᱯ(Ḅᵯᐗ(*+,^ᵯᐗ(.ᵫ01ᡂḄᵯ*+ᵯ2ᔳ஺ᵯḄ4ᵨ67ᵯ89:;<ஹᑖ=ᱯᣚ
7ᵯ?@9:&LஹCDᜐᳮ஺2.H᧜J▭ᵯ⌆MN8ᵯ&ᱯឋḄᳮP,ᐗ(6QRᐗ(SH᧜J▭ᵯᘤ(DC&U8VᱯឋḄᳮPᵯᐗ(6W0Y_ᐗ(SH᧜J▭ᵯᘤ(DCᵯU8VᱯឋḄᳮPᵯᐗ(6RLᐗ(.016[\ᐗ(.]3.ᵯᨵ^ஹ_`abc4d᝱஺fᵯᵯgR஺ஹ\ᵯhU=0i.jbd᝱*4`.kblmnᵯopḄq᳛ᐰtὑᙠᑁ□y஺4.{ὑ8Ḅ|}ᩭ.ᵯᐗ(+ὑ8ᐗ(;ᵯᵯᐗ(+D8ᐗ(஺5.ᵯy᪗Ḅᵯgஹᵯhᔣ*+ὃᔣ.ᎷNᐗ(6i,ᐗ(\Ḅᵯy^ᐗ(Ḅᵯgᔣ+ᐵὶὃᔣ஺ஹᑨ⚪
1.ᳮPᵯg<,ឤNḄᵯg.ᐸ<,\ᵯhᵫᑁᵯN஺┯2.ᵯஹᵯgᵯh6ᵯḄᱥᳮᨬ஺3.ᵯh6opᵯgḄ᪷¢£஺£jᵯᨵᵯhᨵᵯg஺┯4.¤¥¦§¨Ḅᵯh[©ª«,¬8^ᵯg.aஹ⌱¯⚪
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fᐗ(\ᵯh³^ᵯg´¸ᐵὶὃᔣi.ᓽ+Ꮇ¶ᐗ(Bq᳛஺Aஹᔾᦈ
Bஹ¼,஺2.$<,ᵯh½¾¬¿Ḅ¶ᜓᨵÁÂ:.fÁÃᜧi.6ᢣC

1AஹÁᵯÃᜧSBஹÁᵯDZ
Cஹᵯ<,ḄᵯgÃᜧ஺3.fᵯg_i.ᵯgᑁ(C)AஹÊjᵯg.ᨵq᳛Ìὑ
B,[ᵯg.[q᳛Ìὑ
C,:ᵯg.[q᳛Ìὑ஺4.ᵯÍᐗ(ḄÎNᦪÐ+“IKQஹ2.5W",×ØÙᵨiᐕÛgḄᨬᜧᵯg+(A)Aஹ50mA
Bஹ2.5mASCஹ250mA«Þஹßà⚪1.1áâᵯ᝞⚪1.1ᡠ.åßàaஹb\Ḅᵯ.(a)
1.1⚪1.1Ḅ
è
ᙠéèᵯ□§êḄëᦔᵯi.ᐜîᵯᓄðñòᓄ+ØóḄôgᵯ.]õëᦔᓄ+
2Q406Qa□--------LZJb10Q——□--------/Q+10Qab10Q2a50ababi.iQ)Ḅᦔᵯ(b)ᐜîᵯᓄð.öòᓄ+Øóôgᵯ.÷⚪øù,úûᑖ᪆¼ý25Q5Qᵯþ`.ᑣ
ᓄ:604QaCZFb60/Q+2.4Q£=kb5.4Qa0-bi.i(b)Ḅᦔᵯ1.2᪷Ỿ
1.2ᡠᵯḄᵯ/,Wh,⚪ᡠ"#Ḅ$%&$'ᵯ’$ᜧᵯ*ᵯḄ+,-./ᵨ*ᵯ1Ḅ+23456〉ᵨ.⚪%&KCL*34☢Ḅ<ᵨ஺*>⁚.aᨵ4+2-7=0*34☢ᨵ/+/2+2=0H/,=7-2=5(A),^=-5-2=-7(A)

2
1.2⚪1.2Ḅ
1.3ᨵOP“220V6(W”ḄᵯUVᑮ஺(1)XᵯUḄᵯY(2)ZVᑮ2ᓾVᵯ\᫏^_`Ḅᵯa(3)᝞cdeᵨ:`f•h஻(ᢥ3஺ᜩlm)ᵨnoᵯ?ᵫ⚪,জ᪷R=u7PHᵯUᵯvR=U7P=220760=807(Q)ঝ᪷I=U/RᡈP=UIH:l=P/U=60/220=0.273(A)ঞᵫW=PTHW=60X60X60X3X30=1.944X10*(J)ᙠ▭ᵯ“”ᓫ,ᓽ“ᓟ`*60W•ḄᵯUdᜩᵨ3`•hᨴ(30ᜩ)Ḅᵨᵯ60/1000X3X30=5.4(KWH)1.4᪷$
L3
ᡠᵯḄᵯ”ஹIஹ
1.3⚪1.4Ḅ
᪷$ᵯ+,ᕜᔜᐗ¢£ᵯḄ¤ᦪ¦>§஺ᑣ*abcka¬2-U-2=02U»=0*cdpkc:-4-U,+U=02U°-4(V)*eghce-U-10+5+U=032U=-5(V)a1.5´µᵯ᝞
1.4ᡠᐸ£=15%¹=65¥,R°5C,»=»=10«2஺Xᵨ½ᵯ¾R”L¿Àhᵯv£Ḅᵯ஺ᜐaᜐb
1.4⚪1.5
ᙠᵯ
£᪗Ãᔜ½ᵯḄÄὃÆᔣ᝞
ᡠ⌱ÉÆᔣ஺ᡂᵨKCLKVLᑡÆÌ᝞Í/,+/-I=023/ᑁ+&=&+3&3=E?¤ᐭ´µᦪH

35/,+10Ð=1510/2+10/3=65ÆÌH7.=-7/4(A),,2=33/8(A),/,=19/8(A)..Àhᵯv£ḄᵯᵯÆᔣ⌱É•ÑᑣO:hᵯv£ḄᵯᑖÓ2x5஻=/▎=-4=-35/4(V)33—X10&=18-165/4(V)12iox*18=38/4(V)1.6Xᵨ½ᵯ¾
L5ᡠᵯḄᵯÙk(ÚᑡÆÌÛ)ᙠᵯ
£᪗Ãᔜ½ᵯḄÄὃÆᔣ᝞
ᡠᙳ⌱ÉÝ`┐Æᔣ஺<ᵨKCLKVLᑡÆÌ᝞ÍIT2T3=0/+/-/=02455/1+1R=E[3[//?2+/5R3—3ß=஺7-7/?-15/=-£5342᝞àÄᦪ¤ᐭ´µὶâÆÌᓽHᑮᔜ½ᵯ.a——A!a\2\hnA-Vã)hᓃ54VᜧD
1.5⚪1.6Ḅ

1.6⚪1.7
1.7Xᵨ½ᵯ¾,
1.6ᵯḄᵯ4஺:å
ᨵ3½,2ល.çᨵO½´µ,ᡠÚ◤ᑡéhÆÌᓽ஺᜜⌱É▲`┐Æᔣ஺<ᵨKCLKVLᑡÆÌ᝞Í/1+1-4=026/1+ফ3=24♦=5(A)ᡠ/°-2(A),A=3(A)<ᵨ¦ᦔᵯîḄïᣚᓄñ
1.7ᡠḄᔜᵯ஺᝕)(b)2A3(f)E17⚪1.8Ḅ

4(b)1.9Xᵨᵯî¦ᦔïᣚḄƾ
1.8ᡠᵯḄᵯóᑭᵨᵯî¦ᦔïᣚ⚪õÌ᝞Í2Q-7TTTX1|30©4A©2AU6Q[J2Q©2A[J
1.6⚪1.9Ḅ
ᵫᑖö÷H7=5X3(A)1.10Xlm⚪1.9
Ḅᵯ

5A6Q
1.8⚪1.9Ḅ

1.9⚪1.10Ḅ
ᵫ>⚪øùᨵ⌕⚪ƾᡠå⚪ᵨᵯûîüᵯî¦ᦔïᣚஹ½ᵯ¾ஹøýᳮஹÿᓭᳮ.☢ᵨᡚᓭᳮ஺<1)ᐜᵯ,ᵯᓄᡂᵯ᝞!."஺12-62r3+63(A)4=-2+12-6X2/3=6(V)(2).ᦔᵯ0ៜឤ34ឤ◀67ᵯ᝞"஺----=14+2:A;1.11<=ᵯ᝞"1.10ᡠ?஺@AᵨBCDᳮEFᵯ/4ᵯḄᵯU஺I(Dᐜ18VᵯᓫKLᵨMḄᵯ4ᵯᵯ᝞"ᡠ?஺182+Tt/z=1x6=6(V)(2).6AᵯᓫKLᵨMḄᵯ4ᵯ,ᵯ᝞"ᡠ?஺U஻=6X^—^+2X2=163+6:V;

6
1.10⚪1.11Ḅ
(3)UᵯVMLᵨḄᵯ4ᵯWᵯᑖYLᵨMḄBC஺/=/'-/"=6-2=4#U=+=6+16=22(V)1.12ᵯ"1.11ᡠ?,@AᵨῚCDᳮᵯ[Ḅᵯ\ஹ&_36Qᵯ0`ὑḄᵯb᳛P:(1)ᐜ90VᵯᓫKLᵨMḄᵯ4ᵯᵯ᝞"ᡠ?஺90_90_612x3615o+12+36366x=4.512+36
1.11⚪1.12Ḅ
(2).60Vd3eKLᵨMḄᵯ4ᵯfg᝞"ᡠ?.,஻603.52h6x3612+6+36

72Q------------------1-1ᵫlmᵯnWoᩖᵯqmᵯnrᵨᡠᨵᑖ᪆uᵨFᵯvᔜFᵯ_xὃᔣ᝞"ᡠ?.ᵫKCL4KVL7I/1+/,+1=037,-6Z=12-12=026I-4/=12-4=8237:/i=8/9(A),Ii=4/9(A),A=-4/3(A)(2).ᦔᵯ0ឤ4ឤ◀67ᵯ᝞"஺20__3__*2.86y4+J3(A)1.14ᵯ᝞"1.12ᡠ?@Aᵨᡚᓭᳮ,"[ḄᵯIপᐜᵯ.3Aஹ6஺ᵯᓄᡂᵯ᝞"஺ᵫFmᵯnW|ᩖᵯqmᵯnrᵨᡠ}ᑖ᪆:u~FᵯvᔜFᵯ_xὃᔣ᝞"ᡠ?஺ᵫKCL4KVL7I/,+/-7=0236Z,-4Z=18-8=1024/2+12/3=87I/4/3(A),Ji=-l/2(A),4=5/6(A)U=4I=4X(--)=-20C2(V)

8(2).ᦔᵯ0ឤ◀67ᵯ᝞"஺+2Vi2Qb=4஻6஻12=2(a)<3)ᵫᓭᳮr=ᨵᦔW•ᵯ᝞"஺-2=-0.42+3(A)1.15ᵯ᝞"1.IIᡠ?@Aᵨᡚᓭᳮ"[ḄᵯU.পᐜᵯ,᝞!."஺2Q2QCZ1-16A1Qߟl=F+I+(>Vḛ(>VQ5V(2).ᦔᵯ0ឤ4ឤ◀67ᵯ᝞"஺a=i(a)(3)ᵫᡚᓭᳮr=ᨵᦔWᵯ,᝞"஺-15r1=----=*1+4(A)ᱏ44X(-3)=-]2(v)1.16ᵯ᝞"1.11ᡠ?᝞>=௃A,@Aᵨᡚᓭᳮ"[Ḅᵯ0ᨔ஺
1.11⚪1.15Ḅ

1.12⚪1.17Ḅ

1.13⚪1.18Ḅ
Iপᐜᵯ,᝞".1/39W()60VoᜐUoc/6Q312Q+80V()4cᓽ90-6056+123(A)

95=80U=90—6/j=90—6xoc3(2).ᦔᵯ03ឤ◀67ᵯ᝞"஺6x12Rah=46+121(3)ᵫᡚᓭᳮr=,ᨵᦔWᵯ᝞"஺80R+4A=1AMᑣ3"ᡠ¢£=80-4=76(Q)1.17ᵯ᝞"1.14ᡠ?<=15¤ᵯ0Ḅᵯ᝞¥W30V,᩽ឋ᝞"1.14ᡠ?஺@ᵯ[RḄᜧ©4B«Ḅᵯ¬஺IvKᵯ0Ḅᵯ4ᵯ᝞"ᡠ?.ᵫKCLr=k=2+5=7(A),I=II-2-3=2(A).(A)ᵫKVL7(±ᔣ⌱³M┐ᔣ)µ100+30+54=0¶100-30-35=35(V)U_175Rf=-1.18@"௃.15[ḄA«Ḅᵯ¬I(௃)ᐵSᡭj(2)ᐵSºᔠ஺পᐵSᡭM,ᵯ¬᪗½Ḅᵯ¾DW¿ᵯ,᝞"(a)ᡠ?஺(3+3.9+20)XA12-127=0,892(mA)«-20Z+12=-5.84(V)(2)ᐵSºᔠMᵯ¬᪗½ḄᵯÅDW¿ᵯ᝞"(b)ᡠ?஺ᵫKVL7(3.9+20)Xᱏ121:0,502(mA)Z4=-207+12=1.96(V)ÇÈÉÊᵯË⚪xὃÍᫀஹÏÐ⚪II.⊤ÒÈÉÊᵯÓ₩ÕÖḄ×ØÙḄI⊤ÒÈÉÊᵯÚMÛÜᓄÝ᠒ßÖḄ×ØI⚣᳛j⊤ÒÈÉÊᵯáâ¬ãMḄ×äWÙḄåæ஺çὅäWÈÉ×Ḅ.⌕ê஺diWL=LL——2.ᵯ0ᐗì|íÛḄᵯᵯᐵîr⊤?Wï_ᓛjᵯòᐗì|íÛḄᵯᵯᐵîr¢⊤?W—ô_jᵯõᐗì|i=CdUccíÛḄᵯᵯᐵîr¢⊤?W஺ᵫöᐵî÷r7ᵯ0ᐗìWᓽMᐗì:ᵯò4ᵯõᐗìWø᝱ᐗì஺3.ᙠKLCûὶᵯ[,<=ᵯW5A,ᵯ0W30Q,ýᢙW40஺,õᢙW80C,ÿᵯḄᢙ5஺஺ᵯឋᵯ஺ᵯᔾᦈḄᨵ᳛450W,ᔾᦈḄ᳛600ஹar,ᑨ⚪!1.$%&Ḅ!⌕()ᢣᨬᜧ-ஹ.⚣᳛012஺(┯)2.ᵯ4ᐗ6Ḅ$%78ᵯ9ὑḄᨵ᳛;<=஺(A)

103.B$%QDEᵨ1᪃ᩭ⊤J,ᡠEL1〈N)$%O஺(┯)4.ᵯPQ.R)1&SᢙQ.RT)1&S஺(┯)5.$%78ᵯḄUᙠ᳛;<ᨵ᳛0᳛W0஺(┯)6.•YZ▭Ḅᵯ4\ᙌᙠ^_`abᕈdḄᵯᱯឋf)4ឋ஺(┯)7.ghᙠ$%78ᵯḄ᳛⊤ijḄ)78ᵯḄk᳛(┯)8.$%78ᵯḄ⚣᳛lmᢙlᜧ!⚣᳛lnᢙlg஺(┯)Qஹ⌱p⚪!1.q$%ᵯPᨵᦔ-380V,⚣᳛50Hz,stuᦪ-;<380Y,ᐸxt-⊤yz(B)ஹw=380sin314rvBw=537sin(314r+45°)w=380sin(314z+90°)2.•Yᵯ{ᘤhᙠ10VḄ}8ᵯ~Ḅ᳛ᦋhᙠ$%78ᵯ~ᐸḄ᳛2,ᑣ$%78ᵯ~ᵯPḄᨬᜧ-(D)Aஹ7.07V8Bஹ5V9Cஹ14V9Dஹ10V,3.ᵯᵯḄ᳛Bᦪ,bᑡL$Ḅ)(D)ᵨᵯᜓᵨḄ᳛!BஹrᵨᵯᜓḄk᳛mᵯ~ᜓḄ&!CஹDE⁚ḕᵯODஹDmᵯ~ᜓḄᑭᵨ᳛gᵯ\Ḅ᳛ὑ,43=10sin(314/+90஺)J=10sin(628f+30஺)ஹᑣ©Aஹg)°!Bஹ¡¢£¤஺’!Cஹ12¦ᑨ஺5.ᵯᐗ6Ḅ$%78ᵯᵯPᨵᦔ-§¨⚣᳛©ᜧtᵯᵯ8ª(A)Aஹ©ᜧ!Bஹg!Cஹ§¨c6.ᙠ«¬ὶᵯ,UR=16V,UL=12V,ᑣ®ᵯP(B)Aஹ28V8Bஹ20V8Cஹ2V஺7.¯LC¬ὶᵯᙠ°t±².³´,µ⚣᳛©¶ᑮ¸t,ᵯឋ¹ᕈ.(B)Aஹᵯ▢ឋ!Bஹᵯ4ឋ!Cஹᵯឋ஺8.$%78ᵯḄUᙠ᳛)⊤»ᵯḄ(A)AஹᵯPᨵᦔ-¼ᵯ8ᨵᦔ-½¾Bஹ¿ᙳ᳛Cஹxt᳛ᨬᜧ-஺ÁஹsÂ⚪2.1Fᑡ$%&ḄtÃÄᦪᵨ1&⊤J:(1)“=10⊈\È314É(2)/=-5sin(314f—600)ÊË!(1)U=10Ì(V)(2)^m^-5/-600=5/180"—600=5/120°(A)2.2ÍÎ⚣iE%ÏÐ᜜ḄÒᜧ-311V,Ó12-60°,ᐸᨵᦔ-ÕÖᑏØᐸxt-⊤yz;Úᔆ0.0025stEḄ-ÕÖUah~~TTUabm~~TTX311=220.•ᨵᦔ-727?(V)xt-⊤yz=311sin(314r-60)(v)UH=311xsin100^x0.0025--=311sin(-—)=-80.5µf=0.0025stI3)12(V)2.3ᵨbᑡᔜz⊤J□ὶᵯḄᵯPஹᵯ8Þß)AḄÞß)┯ḄÖUUUU_পᵨফ,R+Xcবi=R-MভMUU(5)T(6)U=URUc(7)I=-jOlC(8)/=j(^C+z=R-jXc=R~~j—Ë!ᙠRஹc¬ὶᵯ®ᢙ______U/JZ|=JR2+XJi--giRu^-jixcU=U+UU2^ui+UcRCᡠEপஹফஹ(3)ஹ(5)ஹãஹ(8)ᙳ)┯Ḅভஹ(6))AḄ஺2.422.1,4=40V,ä30V,7=10sin314zA.ᑣ஻ÕÖᑏØᐸxt-⊤yz஺Ë!ᵫᵯSDÍᵯPç¼ᵯ8,èéᔣÏᵯP”:ᵯ8/90\ᡠEU=Ju!+u=V302+402=50(V)(P-arctan—=arctan—=36.9°U4••ᵯPuᵯ8/Ḅᵯí.1.M=50V2sin(31.4r+36.9°),vl2.5S2.2ᡠJᵯÍu=100sin(314î30°)Éj=22.36sin(314t+19.7°)ÊA=10sin(314f+83.13°)Êïð!ñஹZஹ/L

11òZஹZḄឋ¹óØ1ôS஺/...=22.36/19.7°A.,.=10/83.13°=100Ë!ᵫ⚪ÍM-------------(A)2m----------------(A)'Um=201-6.87஺ᡠE¶m2஻௃-----------()A/=20sin(314r-6.87°)li|1l(A)100/30°=50/38.67஺2/-8.67°(Q)100/30°=10/—53.13஺10/83.13°(0)Z1ឋZaឋ஺2.6!2.3ᡠ#ᵯ%&,%="=*+,-ᵯ./AḄ1ᦪ3A,34X56Ḅ1ᦪ7896:ᵫ!<=>?ᵯ@ᵯ+ὶBCᵫDᵯᵯEFGHIᵯJ90”,KᵯᵯELMHIᵯJ90°,NO=%,ᡠ=PQᵯḄᵯE@PQᵯḄᵯEᜧSTUVᔣTXᦑKᵯE⊤[Ḅ1ᦪ0A,ᵫ[ᑖ᪆<-,ᵯJuḄᨵᦔ`3R,ᦑᵯaIᵯJb3R஺Nc=dᡠ=ᵯE⊤᪆Ḅ1ᦪ3A஺Z2.7ᨵfR£ஹ஺iὶḄjEᵯ%,-klS10஺Z-1A,3mᵯJ஻ஹ&ஹoஹ45ᵯ%pqᢙெ16t/u?=/?/=10x1=10(v)UL=\jX[\l=10x1=10yUc=\~'jXcp=10x1=10|..Z=R+jXL_jXc=R=l஺#(/=|z|Z=10xl=10•11(V)2.8ᵯ%᝞!2.4ᡠ,,-3=2rad/s,mᵯ%Ḅpqᢙ.6:Vw=2rad/sXL==2(஺)'3c(Q)
2.4⚪2SḄ

2.5⚪2.9Ḅ

2.6⚪2.10Ḅ
^^10/0°A,X=10Q,01Ḅᨵᦔ`200V,2.9ᵯ%᝞!2.5ᡠ,-20஺m6:ᵫ⚪<-:200/90°==200/02C--AcXc(A)

12200/90°//.=/C+/R^^+10/0°X<$(A)U=jXxi=jlOx(200/90°%I஺஺/%஺LLL+10)=XcXc(V)2000ZH+190஺+o=200-P=4+0Q/200/O+J100XcX஺Xl*l4=2002000A+10()2200-=±A/2002-1002200=(200-ᦑᨵVX஺Xc^^=200±173.22000X஺Xc200±173.2ᑣ:Xc=5.36(C),ᡈO=74.6(Q)2.10!2.6ᡠᵯ%&,^=10sin314rV,T=2Q,2=1C,£=637mH,06372,mᵯEc5ᵯJK6:Z=R+jX+Z=l+j+\-j=2]L](fl)/[=6|Z|2(A)஻=/x|zJ=6x&=8.49%AR?(A)

13
2.9⚪2.13Ḅ
2.12!2.8ᡠᵯ%&,-R=40Q,X=3GQ,R=60Q,X=60Q,C220VḄᵯ[.3mᔜ£%ᵯE¤pḄᨵ¥¥᳛ஹ¦¥¥᳛5¥t2v᳛Nᦪ஺6/=220§uU220/000=4.4/f36.9஺,1R^+jX40+j30ᑣL(A)u220/00«=2.59/45°2"7?2-JXC-60-J60©ᳮ(A)/=/+/=4.4/-36.90+2.59/45°=5.41/-8.61஺91N-------------------------(A).P=U/cose=220x5.41xcos8.61°=1.18.(KW)Q=U/sine=220x5.41xsin8.61°=178.2(Var)A=cos=cos[0—(—8.61°)]=0.992.13!2.9ᡠᵯ%&m:µDAB4ḄUᦔqᢙយuµ2¸ᵯJT¹஻"5"Ḻuµ3¸᦮¼ᵯ%Ḅᨵ¥¥᳛5¦¥¥᳛஺Z—16xµ6+1878¸Q"76+6+/8T8ߟ3+஻/=¿-==2/—53.1஺Z.3+/4(A)U=IjX=2/-53.1°xj4=8/36.9°AFIA(V)U=IZ=2/-53.1°x3=6/-53.1°,FBFB(V)UFB6/-53.10=1/_53^O™-6+J8-J86(A)U=5iM+K)=-l/-53.1°x(6+u8)=10/-180°DF(v),P=UIcosip=10x2xcos53.10=12(W)2=Wsin^=10x2xsin53.1°=16(Var)2.14Âᨵ¼40WḄÃᐝÅÆᵨÅÈ@╋Eᘤµ<ËÌÍ╋Eᘤ>ÎÏᵯ¸iὶᙠᵯJ220V,⚣᳛50HzḄᵯ[஺,-ÅÈÓÎÔÕÏᵯqÅÈHIḄᵯJUriiov,3m╋Eᘤ[Ḅᢙ5ᵯ஺Öᵯ%Ḅ¥᳛NᦪUF7896:••ᱏ40Wi4=110(V)w=314rad/sP40IKR=I.L0.36UR110(A)$U2=UR+U1U^U2-UR=72202-1102=190.5LUL190.5XL----=------=529...IL0.36(Q),XL529L=---=----=1.69CO314(H)

14URHOcos஺----=------=U.JᵫDÅÈ@╋EᘤÛ&ὶḄᡠ=U220Ý3ÞlTjEᵯ%ß⚪àὃâᫀlஹä⚪:11.åælTÎYCCᙠ380VḄlTçèᑴᵯ[஺êIḄTᵯJUD_6_ëḄèᵯJuTᵯEUD_1_ëḄèᵯEu&èᵯEUD0-2.ᨵåælTᡂíîὶCïTqᢙᙳ22஺¥᳛Nᦪ0.8,ñò?&ḄᵯE10A,óôlT&.%Ḅᨵ¥¥᳛5280W:¦¥¥᳛3960var:õᙠ¥᳛6600VA஺Ꮇ᝞ឋ÷ᜓᑣUᦔᵯqù17.6Q;UᦔᵯûV1⚣ü¸42mH.çஹᑨþ⚪:1.&èḄÎᵨÿ
YḄᵯᢝ஺2.:ᵯḄᨵ᳛ᙠ!ᵨ#$%&'()*஺┯]=hi3.-.-/0ὶ23ᨵ/5"Pᡂ8஺┯4..90ὶ2:ᨵ;ᵯ<=>ᵯ<஺5.-?#@.ACD.EFVXIX6.A;ᐕHIJ஺KLMNO◅QRJᐵ,UVA;W☢YZ;[஺┯-ஹ⌱^⚪#1.-ᵯᢣCXAஹ-ᵯaḄᵯ#Bஹ-Ḅᵯ#Cஹ-ᵯaR-ᙳ•Ḅᵯ஺2.•:d;ᑴfᵯ;gh.90ὶḄ-AUijᵯkVijᵯlWijᵯmDn-Ḅᵯ<ᙳi10NoᑣA;ᵯUL=380VḄ-ᵯaCᐸ;ᵯ<4=2.2A,cos4=0.8,Ḅkᢙᓅ#ᐜᵫ⚪ᵩ᝞!ᡃὃ஺K-z<ᵯKL⌱'(%஺•:.925=জᵫ>UF380(V),h=2.2(A)ᑣU..=220(V),h=2.2(A),|z|¢P(Q)ᵫkᢙ-/0£/?=|Z|COS8=100X0.8=80X=J|z¦-R2=71002-802=60Lᡠ!Z=80+j60VQX3-2gh:z<ᵯḄᵯki¯8CPlᢙi°=6஺°V1X²ᵯaᵯi஻=380V,902Ḅᵯ<ஹᵯR;ᵯ<,U*q<2X²ᵯaᵯi´220%-/02Ḅᵯ<ஹRᵯR;ᵯ<,U::V3X²ᵯaᵯi஻=380V,ᡃ•:/02Ḅᵯ<ஹᵯR;ᵯ<,U*.#ᵫ⚪#V1X.923=380.ᑣVU«=Ub=UC=*2஺(V)²U஻=220¹(V)KRᵯ<ᓽ;ᵯ<ᐸᜧ?i:220/0032=22/536.9஺48+76(A)IB=22/-156.9/c=22/83.1°,“------(A)

15L2Ḅ*ᶍ஺(2).-/02u,I=uPU.=220K1V,ᑣU=U=U=220abbcca0a.h=220/0°²——/᧑=È=220¹=22/—36.9஺Z8+É(A)ᑣᵯ38ÐপL2Ḅ*ᶍ஺(3).-/025=3U,=380K1V,ᑣU“b=Ubc=Uj380#²Ò=380?UabÓ*38/-36.9஺8+/6ᑣᵯ<(A)I=38/-156.9°hc(A)lea=38/83.1°i=61ab/-30°=65.8/-66.9°;ᵯ

16E=22/0஺AR—220/-120°=22/-30°-J10(A)=Uc220/120°Ic=22/30°=ãJ10ᡠJN=/—/c=22&+22*+22ä,60.?(3)ᵫåBRiᵯmCRiᵯlᐸᨵ᳛i0.ᦑ-R3᳛æARᵯkឋḄᨵ᳛.p=/JR=222x10=4840ᓽ(W)=4.84(KW)34ᵯ᝞3.2ᡠÖḄ-d;ᑴᵯ,-ᡂ90,ghᵯa;ᵯ380V,ᵯkè=11஺Réq=22C,#<1)ḄᔜᵯஹRᵯ<ஹ;ᵯP=®//COS9öJ=1^=1018.2
3.2⚪3.4Ḅ
V3/COS^<3X5.5X0.8ᡠ!A(V)Q=43UIsin°=6x1018.2x5.5xJl-cos஺=5819.8ஹ,LL

174=¥=3.18A3%=1°÷)V3732ø=ù=320.19/.2=320.19/36.9°3-6.ᵯ᝞3.3ᡠÖ,ghZ=l2+jl6C,3=32.9A,U(_஺u,=UDh=J
ᵫὶLP.LVp‘I329
3.3⚪3.6Ḅ
19ᡠ(A)U=U=Ix|z|=19x7122+162=380ஹLPP3-7.!"#▢ᢙ&ZWl+j22Q,ᵯ01ᵯ2&380Y,6.78ᵯ9Ḅᨵ<<᳛ஹ><<᳛ஹ?ᙠ<᳛A<᳛Bᦪ஺MU=380VU=220V
L,•P220ߟ22°F5Gp|31+j22|H+222•(A)<᳛Bᦪ:31cos᜛=^^——=0.816V312+222ᨵ<<᳛P—y[?)UIcos^>=>/3x380x5.77xcos=V3x380x5.77x0.816=3098.9LL><<᳛Q=y/3U,I.sin^=V3x380x5.77x,=2198.8V312+222(Var)S=KUJL=6X380X5.77=3797.7?ᙠ<᳛:(VA)Cdffi—I___I—H___I—IOC38a——c±]--------
3.4⚪3.8Ḅ
3-8.ᙠ1ᵯ2&380VḄᵯ0MᨵNOᵯPឋ᝞S3.4ᡠU஺V619MḄW1ᵯ8/AᡠᨵḄᨵ<<᳛஺
ᵫNOᡃZ[ᵯ▢ឋᡠ\]^_`஺380"=b=22LY~1PYRy10(A)=fᓃ=6"=6h=17.3238(A)=22+17.32=39.32(A)biᵨklmn6
஺ᵫᡠi⌱ᵨ•Amn\p஺qS=380r;U=220/0஺ᑣlua-----(V)Ḅ1ᵯ8Aᵯ8vᑣ

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