2-1. 5 3 0,25 , t1= 20 0 t = 30 .
λ=0,6 /( . 0).
:
F:
Q = q*F =120 . 15=1800 .
2-2. , δ =30
∆t =300C q= 100 /2.
/( . 0 )
( )
2-3. δ=0,5 . , t1= 10000, t2 = 0 0 λ = 0,85+ 0,0004*t) /(. .*).
t:
t λ
λ=0,85+0,0005* t)=1,1 /(. .* 0).
λ , :
.
2-4. , , δ1 = 20 , λ1 = 450 /(*0) δ2 = 2 λ 2 = 1,0 /(*). t1 =250, t 3=200.
( ) :
2-5. I60/170 . δ2 = 30 δ3 = 50 . : λ1 = 50, λ2=0,15 λ3 = 0,08 /( 0). t1 = 300 t2 = 50 0. .
: d1 = 0,16 ; d2 = 0,17 , d3 = 0.23 d4 = 0,33 ,
-
:
:
.
:
2.1
= -40+n
n
|
|
|
( . 2.1)
| - | - | ||
t = 50-2*n
