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1.
: = 220 , R1 = 20 , R2 = 40 , R3 = 50 . (. 1).
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a, b, c, d (. . 1), ja, jb, jc, jd.
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2.
: = 60 , R1 = 20 , R2 = 30 . (. 2)
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. 2. .2.
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a, b, c, d (. . 2), ja, jb, jc, jd.
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R 1, R 2), , . a d (. 1). R 1, R 2 b, c, , Ubc .
I, I 1, I 2 ( . 2).
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b (. 2):
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R ( R ab = R dc = 0),
Uab = j - jb = R ab × I = 0× I =0, j = jb, Þ j - jd = jb - jc, .. Uad = Ubc
Udc = jd - jc = R dc × I = 0× I =0, jd = j,
R 1, R 2 , Ubc, : .
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3.
: = 60 , R1 = 20 , R2 = 40 , R3 = 50 . (. 3)
: R I, I1, I2, I3 .
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a, b, c, d (. . 3), ja, jb, jc, jd.
. 3. .3.
, a, b, c, d . . 3 b c (, b R 1, R 2, R 3), , . a d . R 1, R 2, R 3 b, c, , Ubc .
I, I 1, I 2, I 3 ( . 3).
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4.
: = 220 , R1 = 8 , R2 = 30 , R3 = 15 , R4 = 5 . (. 4)
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a, b, c, d, f (. . 4), ja, jb, jc, jd, jf.
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. 4. . 4
I 1, I 2, I 34 ( . 4).
R 3 R 4 R 34 :
R 34 = R 3 + R 4 = 15+5=20 .
(. 4) (. 4).
R 2 R 34 R 234 :
(. 4) (. 4).
. 4 , R 1 R 234 , :
R = R 1 + R 234 = 8+12=20 .
, (. 4) (. 4).
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5
: = 220 , R1 = 16 , R2 = 22 , R3 = 7 , R4 = 24 . (. 5)
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. 5. .5.
. 5. . 5.
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a, b, c, d, f (. . 4), ja, jb, jc, jd, jf.
. 5 b f , a, d .
I, I 23, I ( . 5).
R 2 R 3 R 23 :
R 23 = R 2 + R 3 = 22+7=29 .
(. 5) (. 5).
R R 23 R 23 :
R =0 (. 2)
R R 2 R 3 , .
(. 5) (. 5).
(R =0), jb=jf , , - . (. . 5). . 5 , R 1 R 4 , :
R = R 1 + R 4 = 16+24=40 .
, (. 5) (. 5).
I (. 5), :
Ubf (. 5):
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(. 5):
Þ c : R 23= R =0.
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6.
: =32 , R=1 , R1 = 10 , R2=15 , R3=25 , R4=25 ,
R5=12,5 . (. 6)
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. 6. . 6.
. 6. . 6. . 6.
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I, I 1, I 2, I 3, I 4, I 5 ( . 6). A, B, C, D. . 6. , , . , R 1, R 2, R 3, R , R , R . , , ( 0). , , , :
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6. R 4 R 5 . R OD, :
6 6, R , R OD, R . R , :
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I, :
I 4 I 5, R 4 R 5 U OD ( 6):
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64 =64 .
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R 13, R 34, R 14. , , D R 1, R 3, R 4 R 13, R 34, R 14, :
R 1, R 3, R 4 . (. 7).
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. 7. . 7. . 7.
. 7 R 2 R 13, R 5 R 34 .
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