, , , . , , . . , , . , .
, , , - (-) .
, : , , , .
, , , , , . .
r , r r . . 4.
, :
Ø r=r + r ;
Ø r = τ + τ (-).
r =1r, .. 50 -: , , - .
r =1r, .. 12,5 -: , , - .
: r ,
1 = r / r =12,5/50=0,25. (4)
i - . Ri, . , Ri Ri , ..
|
|
Ri =Ri+ Ri (5)
, .
i - ( .) , R. , , .. Ri (4), .:
i =i+i. (6)
i - . i τ , ..
Ri= i/ τ = i/ 50. (7)
i - i τ, ..
Ri = i/ τ =i / 12,5. (8)
R , i- , ..
i =Ri×τ , i =Ri × τ. (9)
r.
. 3 5 - -1.
4 / | |||||||
R | R | ||||||
R | R | R | R | ||||
- | -1 | 4,5 | 4,5 | 2,5 | 1,5 |
, , r r , ..
r=r + r , R =R + R . (10)
R , . , R , R , ..
R = R +R . (11)
. .
.
, . (. 5).
5 ij, 1 ri 1 ri (i) (j) | |||||||||
(i) | (j) | ||||||||
, . . | =14 | =3,0 | =2,0 | = 0,1 | =0,1 | ||||
, . | =36,0 | =6,0 | =4,0 | = 0,75 | =1,0 | ||||
, . (τ) | 50,0 | 9,0 | 6,0 | 0,85 | 1,1 | ||||
i r, . | =1,0 | =0,18 | =0,12 | =0,017 | =0,22 | ||||
r, . | 1,537 | ||||||||
, . . | =2,5 | - | =0,3 | - | - | ||||
., . . | =10 | - | =1,2 | =0,2 | =0,25 | ||||
, . . (τ) | 12,5 | - | 1,5 | 0,2 | 0,25 | ||||
i r, | =1 | =0,12 | =0,016 | =0,02 | |||||
r, . | 1,156 | ||||||||
|
|
.
3 . 5 τ . . 4,5 r. 4 , 5 , r.
810 . , .
:
1) R ;
2) , R
Rn, :
1. ( .5, 4);.
2. ( .5, 5);
3. (4) 1 = 0,25.
Rn, .
Rn , . , Rn (. . 5).
. : ∑ R =500, ∑ R =300; ∑ R =2000, ∑ R =1200; ∑ R =500 ( : , ).
∑ Rn:
∑ Rn = ∑ R× + R× + R× + (∑ R × +∑ R ×) ×1; (12)
∑ Rn = 500×1+(500 × 0,18)+(2000 × 0,12)+(300+1200 × 0,12)0,25 916 ..
∑ Rn × r =916×50=45 800 (-.) -. - .