a) What you have learnt?
Ans:
1.torsional rigidity.
2. Specific torsional rigidity.
3. Breaking twist.
4. Breaking twist angle.
and Math
b) Explain the term Tb ∞ 1/d.
Ans:
# Breaking twist: The twist for breaking of a yarn is called breaking twist. It also can be defined as the number of twists required to break a yarn. Breaking twist depends on the diameter of fiber and it is inversely proportional to its diameter.
That is, Tb ∞ 1/d
Where, Tb = Breaking twist,
d = diameter of fiber