.


:




:

































 

 

 

 


. 1. 䳿




1. 䳿 .

䳿 .

3-32 7-27.

.

1. 1 3-32 , , , , . U = (220 22) f = (50 0,5) . (50 100) (10 60) . (45÷80) ∙.

.

䳿 , , , . . 5.1, , 䳿 .

:

, 1 , ( ), ( ), , ò , .

, fx , , . Ux ¢ (. 5-1, ).

1 ( ) () , fx (.5-1, )

ò , 2 ( ). () , . 2 t1 t2, TN (.5.1, ).

ò t1 t2. TN = (t2 - t1) ( ) , . TN N . Tx fx , (Tx = 1/fx), N Tx, TN.

N = TN / Tx= TN × fx; TN = 1, N = fx, (.5.1, ).

TN . TN.

, (1)

δ0 ; δ0 ≤ 6∙10-6 (%);


TN , ;

fx , .

1.2. () 7-27 ( 7-27 , 7-27 / 1 ) , , .

:

f = (50 0,5) , U = (220 4,4) ; t = (20 5), v = (65 15)%.

100 1000 .

R = (107 5%) . = 40 f = 50 , = 60 .

U ≤ 100

100 ≤ U ≤ 1000

Uk ;

U .

100 1000 f = (10 ÷ 100 ). R = 106 , = 45 .

.

, 220 , 35 ∙. .





:


: 2015-05-08; !; : 502 |


:

:

,
==> ...

1019 - | 833 -


© 2015-2024 lektsii.org - -

: 0.009 .