1.
, Sn, 2 h, L, 1000 . α., . 0,0166 . S0, 2. 0,027 . (L, ) α, . .
Sn, 2 | h, | L, | . | α., | S, 2 | α, | ||
1.1 1.2 1.3 1.4 | 10x10 10x15 15x12 20x20 | 4,5 5,0 4,8 5,0 | --\\-- | 0,035 0,016 0,016 0,015 | / / - | 0,98 0,94 0,92 0,50 | ||
1.5 | 10x8 | 3,8 | --\\-- | 0,015 | 0,90 |
2.
L, 3/ G, /. . , /3. ()
L, 3/ | G, / | C, /3 | |
2.1 2.2 2.3 2.4 2.5 | 0,5 0,4 0,75 0,6 0,36 |
3.
, . = 5000 12 . () n- . .
3.1 | 3.2 | 3.3 | 3.4 | 3.5 | |
., | |||||
(n) | VIII | IV | III | II | I |
4.
F , L . r ; r =5;6;7. ∆, /.
, .
L, | r, | F, | ∆, / | |
4.1 4.2 4.3 4.4 4.5 | 0,006 0,012 0,024 0,006 0,0015 |
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5.
.
(, ) , R; Rn; U, /; g=9,81 /2; =1,19 /3.
.
R | Rn | U, / | |
5.1 5.2 5.3 5.4 5.5 | 0,70 0,80 0,75 0,80 0,85 | 0,30 0,45 0,35 0,40 0,45 | 3,0 3,8 3,5 4,0 3,0 |
6.
n /., . (U, /) (L, ). U 0=5∙10-5 /. U / L n . .
n, / | , | U / | L, | |
11.1 11.2 11.3 11.4 11.5 | 0,04 0,06 0,08 0,02 0,10 | 2,0 2,0 4,5 2,2 2,0 |
7.
, U= 380 . Rh , R . .
7.1 | 7.2 | 7.3 | 7.4 | 7.5 | |
Rh | |||||
R |
8.
n , Vn 3. , ..., /3; 0, /3; %; 3, ∙105, /2; 0=1∙105, /2, V 3, , , /3.
..., /3 | 0, /3 | % | 3 | , /2 | V 3 | , /3 | Vn 3 | |
8.1 | 0.25 | 1.0 | 2∙105 | 0.79 | 16∙102 | |||
8.2 | 0.2 | 0.15 | 0.5 | 1∙105 | 0.88 | 10∙102 | ||
8.3 | 6.0 | 0.50 | 1.2 | 1∙105 | 1.26 | 12∙102 | ||
8.4 | 4.0 | 0.5 | 0.20 | 1.0 | 1.2∙105 | 3.5 | 0.71 | 8∙102 |
8.5 | 20.0 | 0.30 | 1.1 | 1∙105 | 4.0 | 1.52 | 20∙102 |
9.
.
(L, 3/; , ) , (q, /), t2 0C, t10C, U, /.
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1 /0; =1,19 /3; ... =0,40.
, / | t10C | t20C | U, / | |
7.1 | 3,0 | |||
7.2 | 3,5 | |||
7.3 | 4,0 | |||
7.4 | 3,8 | |||
7.5 | 2,5 |
10.
. (Rh=1000 ), . α, , , , , .. I3 = 10
, . | , | , | |
10.1 | 0,5∙102 | 0,9 | |
10.2 | 1,0∙102 | ||
10.3 | 0,8∙102 | 0,8 | |
10.4 | 2,0∙102 | 0,6 | |
10.5 | 7,0∙102 | 0,4 |
11.
(, %), n .. n.
, .
11.1 | 11.2 | 1.3 | 11.4 | 11.5 | |
n . | |||||
n |
12.
(), , f0, , f, .
, - .
f0, | f, | |
12.1 | ||
12.2 | ||
12.3 | ||
12.4 | ||
12.5 |
13.
, I=30, ΣΡ , cosφ =0,75, U = 380 .
13.1 | 13.2 | 13.3 | 13.4 | 13.5 | |
ΣΡ, | 7,5 | 10,0 | 8,0 | 9,5 | 6,0 |
14.
L1; L 2; Ln . f, . L, .
L1; L 2; Ln | f, | L, | |
14.1 | L1=60; L2=70; L3=75 | ||
14.2 | L1=75; L2=78; L3=70; L4=65 | ||
14.3 | L1=60; L2=73; L3= L4=75 | ||
14.4 | L1= L2= L3=75; L4=65 | ||
14.5 | L1=80; L2=68; L3=75; L4=60 |
15.
I, /2.
-75. . I0=10 12 /2
15.1 | 15.2 | 15.3 | 15.4 | 15.5 | |
I, /2 | 10-5 | 4 × 10-6 | 2 × 10-5 | 5 × 10-5 |
16.
, . , 1 3 , . , .
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, | ||
16.1 | , | |
16.2 | ||
16.3 | ||
16.4 | ||
16.5 |
17.
(n, -1) Vn, 3 , F, 2; U,/; =0,028; 1, ; 2, . , d /3, , dn, /3.
F, 2 | U,/ | 1, | 2, | d /3 | dn, /3 | V, 3 | |
17.1 | 0,1 | 22,62 | 42,56 | 17,25 | 12,87 | ||
17.2 | 0,2 | 31,92 | 55,87 | 13,11 | 17,25 | ||
17.3 | 0,2 | 22,61 | 73,15 | 17,25 | 12,87 | ||
17.4 | 0,3 | 42,56 | 73,15 | 30,64 | 17,25 | ||
17.5 | 0,2 | 22,62 | 42,56 | 17,25 | 12,87 |
18.
L, , , , . ; , ; - , %, , %, , %, =1,1; 3. .
L, | , | , | ,% | , % | , % | 3 | |||
18.1 | -40 | IV | 4,2 | 1,5 | |||||
18.2 | -30 | III | 4,5 | 1,7 | |||||
18.3 | -80 | IV | 3,5 | 1,5 | |||||
18.4 | -20 | V | 5,0 | 2,0 | |||||
18.5 | -40 | IV | 2,0 |
19.
() Sn, 2 S0, 2.
=1,5, η0 =8; τ0=0,35 r1=0,90; =1.
?
19.1 | 19.2 | 19.3 | 19.4 | 19.5 | |
L | 1,5 | 1,0 | 0,5 | 2,5 | |
Sn.,2 |
20.
, , F, 2. , /2 0. tn, t, 0, , , , /0, t, 0, , =1,4. , ; ΣQp=900 . ?
F, 2 | tn, 0 | t, 0 | , | , /0 | t, 0 | , | , /2 0 | |
20.1 | 0,19 | |||||||
20.2 | 0,25 | |||||||
20.3 | 0,20 | |||||||
20.4 | 0,17 | |||||||
20.5 | 0,18 |
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