Question 39 (Textile Engineering & Fibre Science)
The final yarn count required from a ring frame is 36s Ne with 28 TPI. The twist contraction during spinning is 3%. If the feed roving count is 2s Ne, the mechanical draft required in the ring frame will be __18.40 : 18.65__.
Given in the question–
The yarn count=36s Ne
Feed roving count=2s Ne
Let, initial yarn count =X
Mechanical draft=Delivery count /Feed count
Mechanical draft=18.55 (Answer)