.


:




:

































 

 

 

 





, . 13.13. .

12. esum . 4.6 ( , ).

, , , , w+F+ed, 2,

w+F+ed=pstHh, (.1)

st - , ;

Hh - , .

w+F+ed=160,6×24=3855 2.

w, 2,

Aw=w+F+ed-AF, (.2)

F - , .

F= 694 2.

w=3855-694=3161 2 ( - 2581 2, - 580 2).

c, 2, f, 2, Ast

Ac=Af=Ast=770 2.

Aesum

Aesum= w+F+ed+c+Af=3855+770+770=5395 2. (.3)

13-15. h l,

Ah=5256 2; A l =3416 2.

16. Vh, 3, st, 2 (, ) Hh, , ,

Vh=st×Hh=770×24=18480 3. (.4)

17, 18. - :

=F/w+F+ed=694/3855=0,18£req=0,18; (X.5)

kedes

kedes=Aesum/Vh=5395/18480=0,29<kereg=0,32. (X.6)

19. II-3 R0r, 2×/, R0req, 1* II-3 - . Dd=5014 × :

Rwreq=3,2 2×/;

RFreq=0,54 2×/;

Rcreq = 4,71 2×/;

Rfreq =4,16 2×/.

Rwr= 3,2 2×/, - Rcr=4,71 2×/, - Rfr=4,16 2×/. - RFr=0,55 2×/.

20. mtr, /(2×), (63)

mtr=1,13(3161/3,2+694/0,55+770/4,71+770/4,16)/5395=0,544 /(2×).

21. Gm, (2×), 12* II-3. , , Gmw=Gmc=Gmf=0,5 (2×), GmF=6 (2×).

22. na, -1, 2.08.01 3 3/ 1 2

na=3A l /(bvVh), (.7)

A l - , 2;

bv - , , 0,85;

Vh - , 3.

na=3×3416/(0,85×18480)=0,652 -1.

23. () minf, /(2×), (.5)

minf=0,28×1×0,652×0,85×18480×1,307×0,8/5395=0,556 /(2×).

24. m, /(2×), (.4)

m=0,544+0,556=1,1 /(2×).





:


: 2016-10-30; !; : 554 |


:

:

! . .
==> ...

998 - | 820 -


© 2015-2024 lektsii.org - -

: 0.012 .