.


:




:

































 

 

 

 





 

37. .

38. .

39. .

40. .

41. .

42. .

43. .

44. , .

45. .

46. .

47. .

48. .

49. .

50. .

51. .

52. .

53. .

54. .

55. .

56. .

57. .

 

6 (й6)

1

.

1. - . , , R=50000 , R=10000 . .

2. 380, 10 , 20 , .

3. , 80 2, 4,5 . =4.

4. , = 10%, = 1,0, = 0,9.

5. R, h = 1 . L=50, b=0,05, r = 4 .

6. . 420, 440. 200 280 .

7. (a = 0,14), S = 200 2. F = 2,1 1,55 2.

8. , 140 2, min= 3,5%, η=10, τ=0,3, , , r1 = 2,0; , k=1,0.

9. , 50 2, 6550 .

10. : 802, 4,5. =4.

11. 12 . , . 4 /3, .

12. 1084 60 / . , (=20 /3), , 5/3.

13. , , W = 15 /, = 2,8 /3, = 0,5 /3.

 

6 (й6)

.

14. 60126. W = 100 / = 105/. ..= 2,6 /3, = 0,3/3. ʳ , G=1200 3/.

15. , . 380 . . R=4 . R =40 , R= 20. .

16. , . , ᒺ 63. 20 /3. ʳ , 500/.

17. , , 2 4000 / , +250, +100.

18. , (), 220 , 50 , R= 10 , R=30 . .

19. , t = 21, t =19 , = 745..., = 760 ...

20. 815 = 120 2. 4 . 2 14 . 2 . , η =0,47, z = 0,845, =1,3, = 100 .

21. 1015 , n = 16, = 32,0 /2.

22. ( 5 , α ) 2010. 21001860.

23. , , . 1,51,0=1,5 2. , V= 0,8 /.

24. ( - ), g1 =4, g2 =6 . ' , , W=100 /., t=1 .

25. . , t = 180, t = 240, k = 0,15.

26. 3 65 . .

27. , 150 , 6,5/. : tn=100C; jn=75%, t=-100C, jn=70%. 300/.

28. 60/ . (), , , 0,1 /3.

29. (3/) 500-600 550, 150.

30. : 15000/, tn =150.

31. , 20105 1,8. 150.

32. : =5 , l =15, 1,2· 1,6.

33. ϳ : 30, 26, 10, 5, . , .

 

6 (й6)

.

34. . () 10002 , 0,98 /.2 0. 200, 100.

35. 380, 10 , 20 , .

36. , 2 2500 / , +300. +140. ٳ n = 1,247 /, =0,24 /×.

37. , 80 2, 4,5 . =4.

38. ϳ : 30, 26, 10, 5, . , .

39. . , , . : R=1000 ; R =80000 ; R =40000 .

40. 60126. W = 100 / = 105/. ..= 2,6 /3, = 0,3/3. ʳ , G=1200 3/.

41. , . 380 . . R=4 . R =40 , R= 20. .

42. , . , ᒺ 63. 20 /3. ʳ , 500/.

43. , , 2 4000 / , +250, +100.

44. ( 5 , α ) 2010. 21001860.

45. , , . 1,51,0=1,5 2. , V= 0,8 /.

46. 40105 . W=110 /. ..=3,2 /3, .=0,2 /3.

47. ( - ), g1 =4, g2 =6 . ' , , W=100 /., t=1 .

48. . , t = 180, t = 240, k = 0,15.

49. 3 65 . .

50. , 150 , 6,5/. : tn=100C; jn=75%, t=-100C, jn=70%. 300/.

51. 60/ . (), , , 0,1 /3.

52. . , , . : R=1000 ; R =50000 ; R =30000 .

53. , 80 3,0 1, .

 





:


: 2016-11-12; !; : 490 |


:

:

.
==> ...

1988 - | 1866 -


© 2015-2024 lektsii.org - -

: 0.019 .