, , . , , , .
, B.
. (SI) , 1 2 1 = 1 ͷ.
- , . . .
. ( ) , .
. (), .
. 1 . 2
B () , r () I (),
B = μa(I/2πr),
μa - ( ).
, ,
B = μa(Iw/l),
w - .
(Iw) , - (). B F, , ; Φ: Φ = BF.
, , . , , .
29. :
=1
q=2
B=0.6
M=3
a=2
z=mpqa=3*1*2*2=12
t=z/2=6
y=B*t=12*0.6=3.6
y=4
y=4+1=5
r=(360*p)/2=30
:
31. 3.1.
: N = 48. w = 2. u = 1 (. 3.1).
2 = 4. yk = 1 = y;
: S = N/2w = 48/22 = 12;
: Z = S = 12;
: K = Z = S = 12;
|
|
: Z = Z /u = 12/1 =12.
,
x = 0;
y2 = y1 y = y1 yk = 3 1 = 2.
y1>y2, .
. 3.1 : ;
:
1) ( );
2) .
.
. 12 , (----) (- - - -) 12 (. 3.1).
, w = 1: 1; 1- 4- ( , y1 = 3) 2- ( yk = 1); 2 2 ( ), ( y2 = 2); 5` ( ) 3- ; .
:
;
, , .
3.2.
: Z = 15; u = 1; 2P = 4.
- (. 3.2).
. 3.2. : ;
:
Z = Z u = 151 = 15; S = K = Z = 15.
.
.
y = 7 .
y2 = y y1 = 7 4 = 3 .
15 (-------) (-------) . . (y = 1 + y1 = 1 + 4) . y = 7 , ; 12- , 15- .. 1- .
. t NSNS, bP = a d t, a d , . , , . . . 3.1. .
(. . 3.2) .
2 a = 1, (2a = 2). , , , k = Z 1, [1, 2].
, , , [1, 2].