0 .2 5 (1 2 0 -6 3 ) 2 1 = 2 - 112 4 - 0 . 5 - 3 . 1 4 ( 1 2 0 + 63) + ------ —----------- -— = 5 1 8 mm 112
8. Yetaklovchi shkivni qam rov burchagi
ал a) N o rm a l ponasim on tasm alar u zatm alar uchun
d ,
d ,
170
90
ax = 1 8 0 c— 5 7 s——
180c — 57*— - — - = 163° >
[аЛ 1
a 270
b) Y arim p o n asim o n tasm alar uzatm alar uchun
а л = 18 0 й — 5 7 о1 ^ ~ 90 = 162е > [дгJ shart bajariladi
v) Ensiz ponasim on tasm alar uzatm alar uchun
a j = 1 8 0 ° - 57'°-— ■
— = 150° > [a.] shart bajariladi
2 2 2 2 6 S
9. 0 ‘qlararo m asofaning hisobiy qiymati
a) N orm al ponasim on tasm alar uzatm alar uchun
a — ~ [2 £ —
n (d 2 + r f i ) +
\f[2L — n(d7 + rf5)] 7 — G(d2—d j ) : ]~
+
^ [ 2 a = 9 5 4 - 3 .1 4 ( 1 7 0 + 90)
+V12- 954 -3 .1 4 (1 7 0 + 9 0 )] 2 - 8 ( 1 7 0 - 9 0 ) 2J b) Y arim p o n asim o n tasm alar uzatm alar uchun
a = —Г2 • 944 - 3.
14(170 + 90) + J[2 ■ 944 - 3 .
14(170 + 9 0)]3 - 8(170 - 9 0 )2 = 2 6 4 8 L v) E nsiz ponasim on tasm alar u zatm alar uchun
a = ^ [2 • 518 - 3.14(120 + 63) +
+V'[2- 5 1 8 —3.14(120 + 63 )] 2 - 8 ( 1 2 0 - 63)
2j = 110
11. Bitta tasm a y ordam ida uzatish m um kin b o ‘lgan quvvat.
a) N o rm al ponasim on tasm alar uzatm alar uchun
[P } = i P 0] ' C a ‘ CL ’ Cu/Cp kVt
bunda
Ca = 0.95;
CL = L J L 0 = 954/17C0 = 0.56 b o i g a n d a
CL
