- :
1
1-10 . , , , , : , , , , , , . , , .
1
R , . 1, I, r1=11 , r2=18 , r3=14 , r4=12 , r5=10 , r6=15 . U=220 . () , .
r1 I1 I2 r2 | r3
I3
r4
I4 | I5 r5 r6 |
I6
. 1
:
R1=11 ,
R2=18 ,
R3=14 ,
R4=12 ,
R5=10 ,
R6=15 ,
U=220 .
:
,
I,
,
.
- . , , . . . (. 1)
1) (. 1) R4, R5 R6 , :
111 111 115
r4,5,6 r4 r5 r6 12 10 15 60
60
r4,5,6 15 4 .
r3 r4,5,6 r3,4,5,6 = r3+ r4,5,6=14+4=18 .
R2*r3,4,5,6 18*18 18
r2,3,4,5,6 r2+r3,4,5,6 18+18 9 9 .
r=r1+r2,3,4,5,6=11+9=20 .
2) .
U 220
I r 20 11 .
3)
P=UI P=I2 * r= 112 * 20=2420 .
4) , . . =U.
r2
U 2= U-U1= 220-11*11=99 .
U 2 99
I r3,4,5,6 18 5,5 .
=I3 * r3,4,5 =5,5*4 =22 .
2 11-20
£=50 R = 30 L=328 . R=50 =53 . U=300 . (. 2)
|
|
: Z, I, cos, , Q, S .
1=90/
1) :
XL= 2 π£L=2*3,14*50*382*10-3=120 ,
L=382=382*10-3
1 1
2 π£ 2*3,14*50*53*10-6 60 .
=53 =53*10-6 .
2) .
R L R
U |
. 2
3) :
Z= 2(XL-XC)2 = 2(120-60)2=100 .
4) :
U 300
I Z 100 3.
5) :
R R+R 30+50
cos Z Z 100 0,8
: =36050
6) :
=I2(R+R)=32(30+50)=720 .
Q=I2(XL-XC)= 32(120-60)=540.
S= 2+Q2 = 2+5402=990
7) .
UL=I*XL=3*120=360 B
Uc=I*Xc=3*60=180 B
UA=I*R=3*50=150 B
L=90/
U 150 UC 360
lUak 90 1. lc1 M 90 4
UA 150 UC 180
lCA M 90 1,7. lc1 M 90 2
8) . ( 3)
.
U U , UL- 900, Uc 900. U . U UL U.
UA
Uc
UK UL
U
I
U
. 3
3 21- 30
U=23 . X=2 R1= 3 , R k =1 XL = 3 .
, I, cos , P, Q S . .
.
1) , .4.
I
I1 R1 I2 R2
U
Xc XL
.4
2) .
: Z1 = 12+XC2= 2 + 22 = ,6 ,
U 23
: I1 Z1 3,6 6,4 A
I1:
R1 3
IA1= I1* cos1 = I1* Z1 6,4 * 3,6 5,33 A
(, . )
X 2
IC1 = I1 * sin1 =I1 * Z 6,4 * 3,6 3,54 A
3) . .
|
|
: Z 2 = k2+ XL2 = 2 +32 = 3,162
U 23
I2 Z2 3,162 7,28A
I2 :
R2 3
IA2=I2 * cos2 = I2 * Z2 7,28 * 3,162 2,3
I (,.. )
XL 3
IL2=I2* sin2 =I2 * Z2 7,28 * 3,162 6,9
4) :
I = A1+ IA2 )2 +(IL2 IC1 )2 = 2 +(6,9 3,54)2 = 2+(3,37)2 = 8,34
5)
IA1 + IA2 5,33+2,3
cos = I 8,34 0,915
=arocos (0,915)=23047= 240
6)
1= I12R1=(6,4)2*3=122,9
P2=I22R2=(7,28)2*1=53
=1+2=122,9+53 ≈ 176
7)
Qc= I12Xc=(6,4)2*2=82
QL= I22 XL=(7,28)2*3=159
Q=L+PL=159-82=77
8)
S=UI=23*8,33 ≈ 192
9)
IA1 5,32 IA2 2,3
I1A1 M1 1 5,32 , I1A2 M1 1 2,3
I1 3,54 IL2 6,9
I11 M1 1 3,54 , I1L2 M1 1 6,9
10) , (. 5)
IA1 , , I1 900, IA1 I1
IA1 I1 I1.
IA2, IL2, I2. IL2 900, . . . I1 I2 I, <240, .
IA2
I1 2
1 IA1 I2 IL2
U
I
.5