, .. r = 850 /3, ( ) r = 0,9, = 1203/, = 150 , t = 50.
:
1. (r.)
. 7.5, (r.) r = 0,9, r = 850 /3.
r. = 440 /3 (0,44 /).
. 7.5.
2. (G)
(G), 1 3 , :
, (7.10)
, 120 3/;
r , 0,85 /3;
r , 0,9;
G 1 3 .., 1,22 .
G = 120 0,85 0,9 1,22 = 112 .
3. (V)
:
, (7.11)
V = 112 / 440 = 0,255 3.
4. (V)
(7.12):
, (7.12)
V = 1 + 0,255 = 1,255 3.
5. (G)
(7.13):
, (7.13)
G = 850 + 112 = 962 .
6. (r)
:
, (7.14)
r = 962 / 1,255 = 767 /3.
7. (r')
(r') :
. (7.15)
:
1) (∆rt);
2) (∆r).
∆rt - , .7.6:
∆rt = 850 840 = 10 /3.
∆r - , .7.7, = 150 , ∆r = 8 /3.
, (7.15), :
r' = 767 - 10 + 8 = 765 /3.
8. (b)
b, , , :
, (7.16)
, (7.17)
,
b = 850 / 765 = 1,11.
.. 3 (..) 1,11 3.
9. (U)
:
, (7.18)
U = (1,11 1) / 1,11 = 0,099 9,9%.
. 7.6. (∆ρt)
. 7.7.
(∆ρ), (1 = 10 )
|
|