Question 19 (Textile Engineering & Fibre Science)
The diameter (mm) of a yarn having twist of 700 turns per meter and surface twist angle of 20o (rounded off to 2 decimal places) is __0.16 to 0.18__.
Given in the question :
Twist per meter(TPM)=700
Surface twist angle()=20o
The diameter of yarn(D)=?
Calculation by formula:
By yarn geometry-
Tan= x Diameter(D) x Twist(TPM)
tan20o=3.14 x D x 700
0.36397=3.14 x D x 700 (tan20o=0.36397)
D=0.16 mm (Answer)