:
: 270800
: ..
3 6
: ..
:
2014
1. . - 3 -
2. V =4/2. - 8 -
2.1. . - 8 -
.. - 9 -
2.2. .. -10-
. - 10 -
. - 11 -
. - 10 -
.. - 13 -
2.3. .. - 14 -
. - 14 -
.. - 16 -
.. - 18 -
. - 20 -
.. - 21 -
| 1. | () | 22,00 44,1 |
| 2. | ( ) | |
| 3. | : - () - () | 2,6 2,7 |
| 4. | 1 . () | 1,0 |
| 5. | : - - () | 0,32 |
| 6. | ||
| 7. | : - () - () | 1,4 |
1) :
- b1 = 400 750() (÷50); k= 2 5
- 1 = b1 = 1200 2400() (÷100) → ;
- 1 = b1 = 800 1800() (÷100) → -;
- 2 = b2 = 600 950() (÷50) → -;
2)
= 22000
L = 44100
3) B = m * l1, m - (3≤m≤6);
l1 -
L = n * l2, n - (4≤n≤9);
l2 -
4,8 () ≤ (l1≠l2) ≤ 7,2 ()
4) l1 = B/m = 22 / 4 = 5,5 => (m = 4; l1=5,5 )
l2 = L/n = 44,1 / 7 = 6,3 => (n = 7; l2=6,3 )
|
|
|
5) b1 = (li - 2*b1)/k = (5500 2*750) / 2 = 2000
b1 = 2*b1 = 2*750 = 1500
b2 = b1 + bk/2 = 750 + 400/2 = 950
| b1 = 2000 b1 = 1500 b2 = 950 b1 = 750 |
.1. 
. 2.
. 3.
2. V =4 /2
1 2
1
| , /2 | γf | , /2 | |
| : : - , δ = 13 (γ = 18 / 3) - - , δ = 20 (γ = 18 / 3) -- , δ = 30 (γ = 18 / 3) -, δ = 60 (γ = 8 / 3) - / , δ = 220 | 0,234 0,36 0,54 0,48 3,4 | 1,3 1,1 1,3 1,3 1,1 | 0,304 0,396 0,7 0,624 3,74 |
| g | 5,014 | 5,764 | |
| : : - δ = 120 ( , ), V ( ) : - V sh - V lon | 0,5 2,6 1,4 | 1,2 1,2 1,2 1,2 | 0,6 4,8 3,12 1,68 |
| V | 4,5 | 5,4 | |
| V 0 | 4,8 | ||
| g + V | 9,514 | 11,164 |
: γf (-
) :
1,3 2 (/2);
1,2 2 (/2)
1 b1=2 γ = 1:
− g =5,764 2,01,0= 11,528 /;
− (g + V) = 11,1642,01,0 = 22,328 /;
− g = 5,0142,01,0 = 4,8 /;
− (g + V ) = 9,5142,01,0 = 19,028 /;
− (g + V lon,) = (4,14+0,8) 2,01,0 =
= 9,88 /.
20:
Rb,n = Rb,ser = 15,0 ;
Rbt,n = Rbt,ser = 1,35 (. 1 [4], 3),
Rb = 11,5 ;
Rbt = 0,9 (. 2 [4], 4),
γ b 1 = 0,9
b = 27,5103
|
|
|
-.
. .
:
− 600:
Rs,n = Rs,ser = 600 (. 7 [4], 6);
Rs = 520 (. 8 [4], 7);
s = 2,0 105
− 500:
Rs = 435 (. 5.8 [3], 7);
Rsw = 300
