compression ratio/perbandingan kompressi
TRANSCRIPT
COMPRESSION RATIO
c
l Vl
Vt=Vl +Vc
Vc
D
Vt
TMA
TMB
CR=Vl+VcVc
CR= VtVc
V=π r2 .t
1. Diketahui:D=8cm
tl = 11 cmtc = 1.2 cmCR = ?
D=8cm…….r=4cm
Vc=3,14 x 42 x1.2=60,288
Vl=3,14 x 42x11=552,64
CR=552,64+60,28860,288
=612,92860,288
=10.66
CR=10.66 :1
Vc= VlCR−1
Vl=Vc x (CR−1)
Vl = Volume langkahVc = Volume compressit = tinggiCR = Perbandingan kompresi
2. Diketahui:D=50mm
tl = 56,6 mmCR = 9:1Vl = ?Vc= ?
D=50mm…….r=2,5cm
Vl=3,14 x 2,52 x 5,66=109,1 c m3
Vc= VlCR−1
Vc=109,19−1
=109,18
=13,64c m3
Pembuktian:CR=Vl+Vc
Vc=109,1+13,64
13,64=8,99
CR=9:1