Enviado por Do utilizador6931

UP0006 CORRENTE ALTERNADA

Propaganda
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+D214. 2 56>0<2 :.1701D2 2 <.42< 27L .:D>2< 2 >.60BC. 01;5<62 Z >.60BC. 45 >2<7042H
;20 :.<7214. DA A51.< 1SA5<. 45 3
01P26 45 /.<B2 27L . 65D >3
21. 65 406>.<
>5<>5140:D3
2<A5175 Z6<5/5<04263
01P26H 450N214. 45 65< 6545 45 / 5 A 014D?042
CENFIM
15
08
08 #
<.4DBC. 45 / 5 A 601D6.0423:.A 4563
.:2A517. 45 *$Y
5 A 601D6.0423><.4D?042 :.A 4563
.:2A517. 45 *$Y2 ($Y
>2<70< 45675 A.A517.H . 651704. 42 / 5 A 014D?042 12 56>0<2 L:.17<=<0. 2. 2175<0.<
. 517217.H 5 2 A51.64. 651704.H 7D4. 65 >2662 4. A.4. 456:<07.
270185 DA ;23
.< A=N0A. 2>962 <.72BC. 45
/ 5 A 014D?042
'$YH :.A5B214. 2 40A01D0< 27L65 21D3
2<
JD214. . >3
21. 42 56>0<2 65 :.3
.:2 >5<>5140:D3
2<A5175 Z63
01P2645 /.<B2 4. :2A>.
P.A.8L15.H . JD5 6D:545 2>96DA2 <.72BC. :.A>3
572H ;.3
7214. Z>.60BC.
08 &
CENFIM
5 A .I7042 >53
2 <.72BC. 517<5 ($Y5 &$Y
16
.< :242 <.72BC. 42 56>0<2 .I75< 65 = DA2 601D69045
2A>3
07D45 42 / 5 A .I7042
65<= 7217. A20.<H JD217. A20.< /.< . 1SA5<. 45 56>0<26 JD5 :.16707D0 . 014D?04.
.80:2A5175H 2 /<5JDG1:02 45>5145<= 42 ;53
.:04245 45 <.72BC.H
456:<0BC. JD5 2:2I2A.6 45 5/5:7D2< :.14D?0<= 2.6 A56A.6 <56D3
724.6 65 28.<2
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F :.16707DO
4. >.< DA O
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53
5:7<.O
A21
23
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><.4D?0< :.<<5175 23
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4.
. 406>.6070;. 456:<07.H :2>2? 45
:
- 5
;
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(
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5 2123
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%
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. 45 456/262A517. ϕ
.< 45/010BC. 4560812< 65 =@
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, -D57,
651ϕ
>.<
7->57, N
CENFIM
17
08 (
<0K18D3
. 4260A>54K1:026
58D042A5175 567D42<5A.6 .6 :0<:D07.6 5A JD5 6D<85A :.<<51756 23
75<12426
601D6.04206H JD5 6C. /.<A24.6>.< <56067G1:026H I.I01265 :.1451624.<56
5<5A.6H 1. 517217.H 5A ><0A50<. 3
D82<H .6:0<:D07.6045206H .D 65R
2H .6:.16707DO
4.6
>.< <56067G1:026H >.< I.I0126>D<26E
65A <56067G1:02F 5 >.< :.1451624.<56>D<.6E
65A
<56067G1:02645 >5<426F
23:.A. 6D:545 12 <523
04245
. 517217.H 23
8DA26 456726 7<G6 8<2145?26H JD5 /.<A2A .6 53
5A517.6 <5206
E
<56067G1:02H <52:7K1:02 014D70;2 5 <52:7K1:02 :2>2:070;2FH 266DA5A ;23
.<567C. I20N.6
JD5 >.45A 456><5?2< 65 /2:5 2.6<56721756
T. :26.H >.< 5N5A>3
.H 4263
KA>242645 01:21456:G1:02H JD5 >.45AH 65A 8<2145 5<<.H
65< :.16045<2426:.A. <56067G1:026>D<26
(
. 2>3
0:2<A.6DA2 7516C. 23
75<1242 601D6.0423Z<56067G1:02 >D<2A5175 9PA0:2H
JD2365<= 2 /.<A2 45 .142 42 :.<<5175 1. :0<:D07.[
>3
0:214. 2 50 45
PA 2.66D:5660;.60167217565 DA2 ;5?JD5
V
HR
= JD5 2
<52:7K1:02 L1D3
2H /2:03
A5175 65 ;5<0/0:2 JD5@
\ A54042 JD5 2 7516C. 2DA5172H 2 :.<<5175 72AILA . /2<=H R
= JD5 65
<53
2:0.12A >53
2 50 45
PAH
V
Q
+D214. 2 7516C. 2>3
0:242 AD42 45 >.3
2<04245H 72AILA 2 01751604245 45
:.<<5175 AD42 45
CENFIM
5-,
;
18
08 *
56067G1:02 >D<2 23
0A517242 5A
.8. 26:D<;26<5><56517270;2642 7516C. 5 42 :.<<5175 567C. 5A /265H .D65R
2H 2
DA A=N0A. 42 7516C. :.<<56>.145 2 DA A=N0A. 45 :.<<5175H . A56A.
6D:54514. >2<2 .6?5<.6
K 6M ,7
. 65< 3
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> 5N D12 3
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45 01:21456:G1:02FH 2 01751604245 45 :.<<5175 JD5 :0<:D3
2 75A 2 A56A2 /.<A2
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. ;23
.< ?5<.H 15675
01672175 1C. :0<:D3
2 :.<<5175 E
6D2 01751604245 L?5<.F +D214. 2 7516C. 23
:21B2
. ;23
.< A=N0A.H 2 01751604245 L08D23
A5175 A=N0A2
0?65 517C. JD5 2 7516C.
5 2 01751604245 567C. 5A /265 E
/08 *F
. :26. 45 :2<826 9PA0:26H 2 7516C. 5 2 01751604245 45 :.<<5175 ;2<02A
60AD3
72152A5175
08 $
CENFIM
516C. 5 01751604245 5A /265
19
(
(
6 I.I0126 567C. ><5651756 5A 7.4.6 2JD53
56 <5:5>7.<56 1.6 JD206 65R
2
15:566=<0. 2 ><.4DBC. 45 DA :2A>. A281L70:.
.< 5N5A>3
. 1.653
5:7<.O
A2156H
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E
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7
5-
7 5-C
5+
53
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2<=
>.< 53
2 DA2 :.<<5175 53
L:7<0:2 JD5 65<= D10:2A5175 3
0A07242 >53
2 <56067G1:02
58D14. 2 3
50 45
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@
%
24. JD5 5672 <56067G1:02 65< >5JD512H 5 65
2>3
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2<= >53
2 A56A2 DA2 :.<<5175 :.A
DA2 01751604245 53
5;242H . JD5 .<08012<= DA2 /.<75 >.7G1:02 40660>242H JD5
>.45<= 4567<D0< 2 I.I012 45;04. 2. :23
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7
5-
:
- 5
53
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.>.60BC. 5<2 45;042 Z<56067G1:02 .PA0:2
.4.656756/519A51.645;5A 65 2. 5/507. 45 2D7. 014DBC. 42 I.I012@
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50 45 51?H 65 ;20
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P5 45D.<085A
08
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:.<<5175
CENFIM
20
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H 75145 2 :<56:5<H
. :2A>. A281L70:. 72AILA :<56:5
>2<5:5 517C. DA2 / 5 A
JD5 65 .>M5 2 JD5 2 :.<<5175 65 5672I53
5B2H
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2BC. Z 7516C. E A2 I.I012
2. 65< 3
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75<A01206F
K ,5 +-,9
5 2 DA2 <545 45 :.<<5175 23
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.<085A 2 DA 456/262A517. 517<5 2 7516C. 5 2 01751604245
672 S3
70A2H 5A
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2BC. Z7516C.
675 456/262A517.H :.A. 7.4. . K18D3
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. :26. 45
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2H . 456/262A517. 65<=
45 *$^
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45 >5<O
.4.F 5A <53
2BC. Z7516C.
08
CENFIM
028<2A2 ;5:7.<02345
5
1DA2 I.I012 >D<2
21
5675 :26. 40?65 JD5 2 01751604245 567= 456/26242 5A 27<26. 5A <53
2BC. Z
7516C. 5A DA JD2<7. 45 :0:3
.
O
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2 I.I012 Z:.<<5175 23
75<1242 75A 2 ;5< :.A .6
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2 . :.5/0:05175 45
2D7. 014DBC. .?5 A206<=>042665R
2A 26;2<02BM5642 :.<<5175 23
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2 I.I012 Z
P2A2A.6 <52:7K1:02 014D70;2 N. Z .>.60BC. 2><56517242 >53
:.<<5175H >53
. JD5@
X L = 2πfL
- V
52:7K1:02 014D70;2 5A .PA6EΩ F
/ V <5JDG1:02 5A P5<7?E
!?F
V
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2 I.I012H 72AILAH
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515<802 53
L:7<0:2
5675 :26. 2 515<802 /3
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40?5A.6JD5 5672 567= 2 :.16DA0< 515<802 53
5:7<.A281L70:2
A2 ;5?23
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2 :.<<5175 A=N0A2 5 . /3
DN. A=N0A.H 56756 75145A 2 40A01D0< 658D014. 2
7<2R
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214. 65 DA2 / 5 A 45 2D7. 014DBC. 45 723651704.
JD5 85<2 DA2 515<802 53
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5675 :26.H 2 I.I012 45;.3
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5672 A2150<2 40?5A.6JD5 2
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5:7<.A281L70:.H >2<2 2
45;.3
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. 658D0175
CENFIM
22
24. JD5 . ]277O
A57<. A545 . ;23
.< AL40. 42 >.7G1:02 5 5672 L6 >.6070;2
4D<2175 DA JD2<7. 45 :0:3
. 5 158270;2 1. 658D0 175
675 1C. 0140:2 151PDA2
>.7G1:02
660A 2 I.I012 1C. :.16.A5 515<802
6 :.16721756 :2<826 5 456:2<826 42
A56A2 .<08012A :.A JD5 5 :0<:D3
5 DA2 4575<A01242 :.<<5175 1.6:.14D7.<56H
>.< 7217.H 72AILA 2>2<5:5 DA2 >.7G1:02H 2 JD5 :P2A2<5A.6>.751:02 <52:70;2
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2 19 :
-
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7-,9 2
.
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Z = R 2 + X L2
08
.I012
660A >.45A.6 .I75< DA :0<:D07. 04G170:. 2. 42 /08D<2
:.16045<2< . ;23
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5675 :26. 45;5<5A.6
5 . 42 <52:7K1:02 014D70;2 N. 65>2<24.6
08
CENFIM
23
. :0<:D07. 014D70;. 2 :.<<5175 27<26242 45 DA K18D3
.
. :26. 4. :0<:D07.
ϕ
5A <53
2BC. Z7516C.
H . 456/262A517. ;2<02 517<5 $Y5 *$Y
P
08 #
S=U.I
(VA)
P = UR . I = U . I COS ϕ
(W)
QL = XL . I = U . I SEN ϕ
(VAr)
.7G1:0261DA2 I.I012
'
(
(
6:.1451624.<561C. 6C. <5:5>7.<56JD5 65R
2A D703
0?24.6P2I07D23
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26 <56067G1:026 5 26 I.I0126 . 517217. 6C. AD07. S7506H >.< 5N5A>3
.H >2<2
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I.I0126
7
5- 7 5-,5+ H 69 :0<:D3
2<= :.<<5175 53
L:7<0:2 >53
. :0<:D07. 4D<2175 2
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5672 /.<A2H >.45 65 40?5< JD5 DA :.1451624.< 1C.
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1D2
7
5:
- 5
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75<1242A5175
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CENFIM
24
08 &
028<2A2 ;5:7.<02345
5
1DA :.1451624.<
:2<82 :2>2:070;2 E
:.1451624.<FH JD214. 0165<04. 1DA :0<:D07. 45 :.<<5175
23
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. :26. 42 :2<82 :2>2:070;2 >D<2H 2 01751604245 45 :.<<5175 2402172 *$^E
45
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53
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75
5
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7 ! 7,-,9
75
5
N
Z .>.60BC. JD5 .
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-: V
52:7K1:02 :2>2:070;2
5A .PA6
1
XC =
2πfC
/ V <5JDG1:02 5A P5<7?
V
2>2:04245 4.
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08 '
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DA :.1451624.< 1C. 5N0675 :.16DA. 45 515<802 2:70;2
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CENFIM
K
7
5
K,
D<2175 . ><0A50<.
:
)7- ,7
E
25
7 K
:7-
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. JD2<7. 45 :0:3
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:0<:D07. 27L2. 85<24.<H 45;.3
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242
2AILA 2>2<5:5 D12 >.7G1:02 <52:70;2 L7><.4D?042 >53
2 515<802 JD5 L7<.:242
517<5 . :.1451624.< 5 . 85<24.<
DA :.1451624.<@ +: V -:
08 '
E
F
E;.3
7 2A>5<5 <52:70;.6F
0<:D07.
5675 :26. . 456/262A517. ;2<02 517<5 $^5 *$^E
/08 'F
R = Z COS ϕ
XC = Z SEN ϕ
Z2 = R2 + X2C
UR = U COS ϕ
UC = U SEN ϕ
U 2 = U R 2 + U 2C
S = U . I (VA)
P = U .I . cos ϕ (W)
QC = U .I . ses ϕ (VAr)
S2 = P2 + Q2C
08 (
CENFIM
26
.
5 3
082<A.6 DA2 <56067G1:02H DA2 I.I012 5 DA :.1451624.< .I75A.6 DA
7, 7+,-
. ;
08 *
0<:D07.
5675 :26. 2 0A>54K1:02 4. :0<:D07. ;5A@
Z2 = R2 + X2
Z2 = R2 + (XL – XC)2
X L = 2πfL
XC = −
1
2πfC
X = 2πfL −
1
2πfC
+D214. - V $H E
- V - FH P= <566.1K1:02 1. :0<:D07.
5675 :26. 2 0A>54K1:02 4. :0<:D07. L08D232
V
08 $
CENFIM
27
;
H
P
(
P
.
(Q
O
A :.<<5175 23
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360
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300
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#$$$ _WP 5
$$ P.<26 45
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P
23
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IF
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/2:7.< 45 >.7G1:02 42 016723
2BC. >2<2 $H(
.
2F
VW
+ V W+
7 V #$$$
$$ V ('H# U
7V
$$ V ( U
IF 78 ϕ 0 V +
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V $H*& V` :.6ϕ 0 V $H'
:F :.6ϕ / V $H( V` 78 ϕ / V $H'#
+ V
+
+
78 ϕ / V ('H# N $H'# V &#H& U
V E
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V
+
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V (H '
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π. f
V &H
FV&
U
&#H& V (H ' U
V&
E
:242 :.1451624.<F
E $$ N N π . N#$F V
H
N $
V
µ
CENFIM
53
L
L
L
V
V
V
N
N
N
[ 23
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5 . >5<O
.4. :.<<56>.145175 2 DA2 /<5JDG1:02 45 $ _!?
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5 2 /<5JDG1:02 45 DA2 : 2 601D6.0423:DR
. >5<O
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<[ +D217.6:0:3
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. >5<O
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=[ +D217. 75A>. 45A.<2 DA2 :.<<5175 2 5/5:7D2<
$$ :0:3
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B[ +D23L. >5<O
.4. 45 DA2 .145 45 <=40. :DR
2 /<5JDG1:02 L#$$ _!?[
µ
G[ A2 .145 45 <242< 75A DA >5<O
.4. 45
121.6658D14.
23
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5 2 6D2
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2F
;23
.< 5/0:2?42 7516C.
IF
;23
.< A=N0A. 42 7516C.
23
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5 . 3
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.<
2<07AL70:. AL40.[
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IF
23
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5 . ;23
.< 5/0:2?
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.< 42 ;53
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2<
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23
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23
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23
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Ω
2F
0A>54K1:02 42 I.I012
IF
01751604245 JD5 >5<:.<<5 2 I.I012 JD214. 65 3
P5 2>3
0:2 $
CENFIM
23
:D3
5@
54
$ Ω 5 2 <52:7K1:02
<[ DA I23
267<.H :DR
2 <56067G1:02 L 45
DA2 7516C. 45 ($
$ Ω H L 2>3
0:242
23
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2F
6D2 0A>54K1:02
IF
01751604245 JD5 . >5<:.<<5
=[ A :0<:D07. 53
L:7<0:.H :DR
2 7516C. L
$
$$ Ω 5 DA2 I.I012 >D<2 45 #$$ Ω
H L:.16707DO
4. >.< DA2 <56067G1:02 45
23
:D3
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2F
0A>54K1:02 5 2 <52:7K1:02 42 I.I012
IF
0A>54K1:02 4. :0<:D07.
:F
01751604245 2I6.<;042
Ω
Ω
Ω
B[ A2 I.I012 1C. >D<2H :DR
2 <52:7K1:02 L $$ Ω H 2I6.<;5 DA2 01751604245 45
$H(
JD214. 3
08242 2
$
2F
0A>54K1:02 42 I.I012
IF
6D2 <56067G1:02
23
:D3
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Ω
Ω
G[ 23
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5 2 <52:7K1:02 45 DA2 I.I012 JD5 2I6.<;5 $H#
6D2 <56067G1:02 L45 $$ Ω
#$
JD214. 6DIA57042 2
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H[ 23
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5 2 0A>54K1:02 45 DA2 I.I012 :DR
. :.5/0:05175 45 2D7. 014DBC. L H# ! 5
:DR
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Ω E/V#$ !?F
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45 #$
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0:2 DA2 7516C. :.17O
1D2
5A :.<<5175 23
75<1242 2 01751604245 I20N2 >2<2 $H
23
:D3
5@
2F
<56067G1:02 42 I.I012
Ω
IF
<52:7K1:02 42 I.I012
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65D:.5/0:05175 45 2D7. 014DBC.H 65 /V#$ !?
S[ A 2JD5:54.< :DR
2 <56067G1:02 L 08D232 '$
Ω 567= 3
0824. 2
$
E
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23
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01751604245 2I6.<;042
IF
>.7G1:02 2>2<5175
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4F
/2:7.< 45 >.7G1:02
$3[ A2 I.I012 75A DA2 <56067G1:02 45
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23
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:F
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4F
>.7G1:02 <52:70;2
5F
/2:7.< 45 >.7G1:02
CENFIM
#$
Ω
H 26658D017568<2145?26@
55
$ [ 53
270;2A5175 2. ><.I3
5A2 2175<0.<H 6D>.1P2 JD5 2>3
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23
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5
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$
µ
L3
0824. Z <545 45 4067<0ID0BC. 45
$
H #$ !?
23
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2F
6D2 <52:7K1:02
IF
6D2 0A>54K1:02 E
65 456><5?2<A.62 <56067G1:02 ><9><02F
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01751604245 2I6.<;042 >53
. :.1451624.<
Ω
$<[ 23
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5 2 :2>2:04245 45 DA :.1451624.< >D<. E V$F JD5 2I6.<;5
3
0824. 2
$
µ
E
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$=[ A :.1451624.< >D<. 45 #
µ
2I6.<;5 $H
6D2 <52:7K1:02
IF
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P5 /.0 2>3
0:242
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23
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JD214.
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µ
5 DA2
Ω H L 23
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IF
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5A517.
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Q
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$G[ A :0<:D07.
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4. >.< DA2 <56067G1:02 45
45 2D7. 014DBC. 08D232 $H
$$
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! 5 :2>2:04245 45
µ
Ω H :.5/0:05175
7516C. 2>3
0:242 L45
23
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<52:7K1:02 42 I.I012 5 4. :.1451624.<
IF
0A>54K1:02 4. :0<:D07.
:F
01751604245 2I6.<;042
4F
7516C. 5A :242 53
5A517.
5F
$
$
Ω
Ω
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6>.7G1:0262:70;2H <52:70;2 5 2>2<5175
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0824265A 567<53
2 :.A 15D7<. 2I6.<;5A <56>5:70;2A5175
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56L45
H
H
Ω
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$
H
23
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5 .6;23
.<5645@
Ω
IF
:F
CENFIM
H
H
56
$\[ <G63
KA>242601:21456:51756H 3
0824265A 567<53
2 :.A 15D7<. 2 DA2 <545 45
$
2F
$$ H 7GA .6;23
.<5645
H
5
H
H
Ω H
Ω 5 ( Ω
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23
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IF
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$S[ <G6 <5:5>7.<56H 3
0824.6 5A 567<53
2 :.A 15D7<.H 7GA <56>5:70;2A5175 26
>.7G1:02645 #$$ WH '#$ W 5 $$$ W
2F
IF
H
<545 L45
$
$$
23
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5@
5
H
Ω
H
Ω
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<3[ <G6:2<826014D70;263
0824265A 567<53
2 :.A 15D7<. Z<545 45
V
<56>5:70;2A5175 .6658D01756;23
.<56@
-
V $$
ΩH
-
V $$
Ω
V $$
$
Ω H - V $$ Ω H
$$
$$
V $$
7GA
ΩH
ΩH
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23
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23
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5 . ;23
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4F
23
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5 . ;23
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5F
23
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< [ <G6:2<826<560670;2608D206H 3
0824265A 7<0K18D3
. 2
DA2 :.<<5175 E
45 3
01P2F :DR
2 01751604245 L
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01751604245 5A :242 :2<82
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<56067G1:02 45 :242 :2<82
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Ω
H 2I6.<;5A 42 <545
23
:D3
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:242 :2<82
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4F
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$$
L3
0824. DA A.7.< 7<0/=60:. :DR
.6 51<.3
2A517.6 6C.
3
0824.6 5A 7<0K18D3
.
01751604245 12 3
01P2 L & Q . /2:7.< 45 >.7G1:02 4.
A.7.< L$H(
23
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5@
2F
01751604245 5A :242 51<.3
2A517. 4. A.7.<
IF
0A>54K1:02 5A :242 /265 4. A.7.<
:F
>.7G1:02 2:70;2 2I6.<;042 >.< /265
Ω
<<[ 67<G6<2A.645 DA2 3
082BC. 5A 7<0K18D3
. 6C. :.16707DO
4.6>.< 7<G6:0<:D07.6
6L<05H <56>5:70;2A5175 :.A@
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V $$
V
Ω H :.6ϕ 3 V$H&
<545 L45
Ω
2F
<56067G1:02 45 :242 <2A.
IF
01751604245 JD5 >5<:.<<5 :242 <2A.
CENFIM
$$
Ω
ϕ1
ΩH
$
$$
V$H Q
V #$
ΩH
23
:D3
5@
Ω
57
:F
>.7G1:02 2:70;2 45 :242 <2A.
4F
>.7G1:02 <52:70;2 45 :242 <2A.
<=[ A :0<:D07. 45 03
DA012BC. L :.16707DO
4. >.< &$ 3
KA>2426/3
D.<56:5175645 #(
W
$
/2:7.< 45 >.7G1:02 45 :242 3
KA>242 L $H#
63
KA>2426 567C.
08D23
A5175 4067<0IDO
426 >53
26 7<G6 /2656 45 DA 60675A2 7<0/=60:.H :DR
2 7516C.
:.A>.672 L45 $$
#$ !? 23
:D3
5@
2F
>.7G1:02 2:70;2 12 016723
2BC.
IF
01751604245 12 3
01P2 JD5 23
0A5172 . :0<:D07.
:F
>.7G1:02 2>2<5175 42 016723
2BC.
4F
:2>2:04245 45 :242 :.1451624.<H 2 3
082< 5A 7<0K18D3
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2BC. E
:.6ϕ V F
<B[ DA2 <545 7<0/=60:2 45
$
$$
#$ !? 567= 3
0824. DA <5:5>7.< 7<0/=60:.
:.16707DO
4. >.< 7<G6 I.I0126 08D206 45
<56067G1:02 3
0824265A 7<0K18D3
.
µ
$
Ω 45 <52:7K1:02 5
$
Ω 45
23
:D3
5@
2F
01751604245 JD5 >2662 5A :242 I.I012
IF
01751604245 12 3
01P2 JD5 23
0A5172 . <5:5>7.<
:F
/2:7.< 45 >.7G1:02 42 :2<82
4F
:2>2:04245 45 :242 DA 4.6:.1451624.<562 3
082< 5A 7<0K18D3
. 45 A.4. 2
/2?5< 2 :.A>5162BC. 7.7234. /2:7.< 45 >.7G1:02 E
:.6ϕ V F
µ
<G[
I65<;5 2 /08D<2 5 :23
:D3
5@
2F
01751604245 0140:242 >53
. 2A>5<O
A57<.
IF
/2:7.< 45 >.7G1:02 42 :2<82
:F
>.7G1:02 2:70;2
4F
:2>2:04245 45 :242 DA 4.6 :.1451624.<56H 5A 7<0K18D3
.H 45 A.4. 2
:.A>5162< 7.723
A5175 2 :2<82 E
:.6ϕ V F
CENFIM
µ
58
<H[ A A.7.< 7<0/=60:. 75A DA2 >.7G1:02 S70345 #
H
η V($eH :.6ϕ V$H(#H
:V $$
23
:D3
5@
2F
01751604245 2I6.<;042 >53
. A.7.<
IF
:2>2:04245 45 :242 :.1451624.<H 3
0824.6 5A 7<0K18D3
.H 45 A.4. JD5
:.6ϕ V
:F
µ
01751604245 7.7232I6.<;042 45>.0645 :.A>51624. . A.7.<
<\[
7516C. 42 <545 42 /08D<2 L45 $$
.A . 0175<<D>7.<
.3
082<
4563
0824. .62>2<53
P.6A2<:2;2A@ #
H A2<:2<2A@
5 ( _W
5 ( _W
23
:D3
5@
2F
/2:7.< 45 >.7G1:02 42 :2<82 014D70;2
IF
>.7G1:02 <52:70;2 7<0/=60:2 42 :2<82 014D70;2 E
+ 010:023
F
:F
/2:7.< 45 >.7G1:02 /01234. :0<:D07.
4F
>.7G1:02 <52:70;2 7.7234. :0<:D07.H :.A
3
0824. E
+ /0123
F
5F
:2>2:04245 45 :242 :.1451624.<
µ
CENFIM
59
( %
( %
;
.
.
'
'
(
672 D104245 >5428980:2 ><575145D /.:2< .6 26>5:7.6 A206 <53
5;21756 <53
2:0.124.6
:.A 2 :.<<5175 23
75<1242H 7514. 5A :.16045<2BC. . 8<2D 45 2><5140?285A 2 JD5 65
4567012
;
.
'
ELECTROTECNIA-TEÓRICA E APLICADA, (ÁLVARO BADONI - PORTO EDITORA)
ELEMENTOS DE ELECTRICIDADE, (SIMÕES MORAIS - PORTO EDITORA)
ELECTROTECNIA – PROBLEMAS E ITENS (DIDÁTICA EDITORA-JOSÉ VAGOS
MATIAS)
ELECTROTECNIA – PROBLEMAS E ITENS – 2 (DIDÁTICA EDITORA-JOSÉ VAGOS
MATIAS)
CATÁLOGO GERAL-91 (MERLIN GERIN)
ELECTROTECNIA (PARANINFO-PABLO ALCADE SAN MIGUEL)
CENFIM
60
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