:
1. ()
. (. 7.1). , , ( = 128 3/3), , ( , r = 0,9). ( , r = 0,85 /3), (t = 60) , , :
= 175 .
.. , 180 , .
2. (b)
. (. 7.2). ( = 128 3/3), ( , r. = 0,9) ( , r = 0,85/3). (t = 60), ( = 180) :
b = 1,23.
.., 1 3 .. 1,23 3.
3. (r. )
3.1. , 1 3 ( G. ):
, (7.5)
r .., 0,85 /3;
Go ;
G 1 3 .., 1,22 ;
r , 0,9.
. 7.1. .
. 7.2.
, (7.6)
G = 128 / 0,85 = 150,6 3/,
G. = 0,85 150,6 1,22 0,9 = 141 .
3.2. .. (G) :
, (7.7)
,
G = 850 + 141 = 991 .
3.3. , (r. ):
, (7.8)
r. = 991 / 1,23 = 806 /3.
4. (U)
():
, (7.9)
U = (1,23 1) / 1,23 = 0,187 18,7 %.
5. (m. )
5.1. . , . 7.3, (m. ):
m. = 2,7 .
( . = 175 = 128 3/3) .7.4:
m. = 0,7 .
5.2. .
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. 7.3.
. 7.4.