1. .
(. 1.24) :
1) ;
2) R;
3) ;
4) ;
5) .
6) , .
.
1.
I, | r, | R1, | R2, | R3, | R4, | R5, | R6, | R7, | ||
1.24 | 0,2 | 1,8 | 1,2 | 2,4 | ||||||
:
1. :
2. , , :
I = (1.1)
=I⋅r = 60⋅0,2=12 ().
3. , . R4 R5 , R45, :
R45 = =
(.1.1) :
.1.2.
R1, R2, R45, , R, R, R:
.1.3.
:
R= = = 0,8 ().
R= = = 1,6 ().
R= = = 0,8 ().
R6 R7:
R6 = R+ R6 =0,8+1,2=2,0()
R7 = R+ R7 =1,6+2,4=4,0()
R67:
R67 = (RB6⋅RC7) / (RB6+RC7)
RB6C7= = 1,33 ().
R:
R=RA+RB6C7+R3= 0,8+1,33+1,7=3,83 ().
4. :
I = = =2,98 ().
5. U:
U=I⋅ R =3⋅3,83 =11,41 ().
6. :
I3 = I =IA=IB6C7=2,98(A) -
.
I6 =I=IB6=UB6/RB6 I7 =I=I7=U7/R7
UB6 = U7= UB6C7= IB6C7⋅ RB6C7=2,98⋅1,33=3,96().
I6 =3,96/2=1,98 I7 =3,96/4=0,99 .
.
, ( 1.2) , , I45:
0= I6 ⋅R6 - I7 ⋅R7 I45 ⋅R45
I45=(I6 ⋅R6 - I7 ⋅R7)/ R45=(1,98⋅1,2-0,99⋅2,4)/4=0.
R4 R5 .
|
|
( 1.2) , , I1 I2:
: I1= I6+ I45=1,98+0=1,98().
: I7= I2+ I45, I7= I2=0,99 .
2. 2.
I,A | I1,A | I2,A | I3,A | I4,A | I5,A | I6,A | I7,A |
2.98 | 1.98 | 0.99 | 2.98 | 1.98 | 0.99 |
6. , . (1.1) , :
.1.4.
,,. . - φ =0.
, R1, R6,r, R3, . .
φ = φ - I1 ⋅ R 1= 0 - 1,98⋅2 = - 3,96
φ = φ - I6 ⋅ R 6 = - 3,96-1,98⋅1,2 = - 6,34
φ = φ + - I ⋅ r = - 6,34+12 - 1,98⋅0,2 = 5,26
φ = φ - I3 ⋅ R 3= 5,268 - 2,98⋅1,7 ≈ 0 .
. , , , , .
3.
R,r, | φ, |
2,0 | -3,96 |
3,2 | -6,34 |
3,4 | 5,26 |
5,1 |
1.
. 1.5.