\u —
u\ |1.88-1.871
= L i----- I -
100
% = --------------- •
100
=
1
% < [
30
/j
и 1.87
1 J
b) Yarim ponasim on tasm alar uchun
ux = ^ - = ^
= 1.88
Am = 1% <[
3
%] shart bajarildi.
d,
90
v) Ensiz ponasimon tasmalar uchun
d 120
\u* ~ u\ |l .9-1.871
u = ±L = 1^1 = 19 Aw = — -------100% = J------------ ^ 100
= 3.0% x d{ 63
'
и 1.87
6. 0 ‘qlararo masofaning taxminiy qiymati
a) N orm al ponasim on tasm alar uzatmalar uchun
a = 0.55(d3 + d2) +
h mm
bunda: h = 8.7 tasmaning balandligi
a = 0.55(90 + 170) + 87 = 268.7мм
270мм.
b) Y arim ponasim on tasmalar uzatm alar uchun
a - O.SSCdj. + d-J + h - 0 .5 5 (9 0 + 1 7 0 ) + 2 .3 5 - 262.35m m * 265mm h = 2.35mm v) Ensiz ponasim on tasm alar uzatmalar uchun
a = 0.55(d1 + d2) -
h = 0.55(63 + 120) + 10 = 110.65мм % 112мм
h = 1 0 mm
7. Tasm aning uzunligi
a) Norm al ponasim on tasmalar uzatm alar uchun
,
л
л с , ,
J
4
0.25(d, - d
,)2
L —
2
ci + 0.5/r(d
2
-f- c/j) H------------------ —
a =2- 270 + 0.5 • 3.14(I7C 4- 90) + — -
= 954мм
b) Yarim ponasim on tasmalar uzatmalar uchun
I = = 2 - 2 6 5 + 0.5 • 3 .1 4 (1 7 0 + 9 0 ) + = 944mm 147
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