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5. 2 = 4 f1 = 50 . , 6%.
. (6.3)
n1 = f1 60/ = 50 60/4 = 1500 /.
(10.2)
n = n1(1 - s) = 1500(1 - 0,06) = 1412 /.
6. 660 . 1 = 16,7 cos φ1 = 0,87. η n = 1470 /. η hm, = 265 , = 123 . r1.20 = 0,8 , F ( Θ6 =115 ).
.
I1 = 
= 
=16,8
U1 = 660/ 
= 380 .
,
Θ = 115 ˚,
r1 = r1.20 [1 + α (Θ - 20)] = 0,8[1 + 0,004(115 - 20)] = 1,1 .
(13.2)
1 = m1 I21 r1 = 3 16,82 1,1 = 93 1 .
= 1 - ( + 1) = 16,7 103 - (265 + 931) = 15504 .
s = (n1 n)/ n1 = (1500 - 1470)/1500 = 0,020.
|
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2 =s = 0,020 15504 = 310 .
6 = 0,005 1 =0,005 16,7 103 =83 .
= + 1 + 2 + + = 265 + 931 + 310 + 123 + 83 = 1712 .
(13.10)
η = 1 - / 1 = 1 - 1712/ (16,7 103) = 0,898, 89,8%.
