Question

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: Most twisted netting twines are 3 stranded
Reason R: Fibres are twisted in S direction, yarns in Z and twines in S direction
In light of the above statements, choose the correct answer from the options given below

• A. Both A and R are true and R is the correct explanation of A
• B. Both A and R are true but R is NOT the correct explanation of A
• C. A is true but R is false
• D. A is false but R is true

Hint:

Remember the S-Z-S rule for twine construction. The alternating twist directions are essential for "form stability." In a 3-stranded twine, the final twist direction is usually the opposite of the yarn twist direction.

Answer 1

The Correct Option is A

Step 1: Understanding the Question:
The question explores the structural composition and manufacturing process of netting twines used in fishing gear. It focuses on the number of strands and the specific sequence of twist directions employed during production.

Step 2: Detailed Explanation:

• Assertion Analysis: Netting twines are the primary material used for making fish nets. In the fishing industry, the most common type of twisted twine is the 3-stranded variety. This configuration provides an optimal balance between strength, flexibility, and stability. Therefore, Assertion A is true.

• Reason Analysis: The stability of a twine depends on the "balanced twist" principle. To prevent the twine from untwisting or kinking, successive stages of manufacturing use opposite twist directions. A typical sequence is:
- Fibers: Twisted in the S-direction (left-handed).
- Yarns: Twisted in the Z-direction (right-handed).
- Twine (Final Product): The three yarns are then twisted together in the S-direction.
This S-Z-S (or Z-S-Z) configuration ensures that the internal stresses counteract each other, resulting in a stable, non-spiraling twine. Thus, Reason R is true.

• Integration: The reason provides the technical manufacturing logic behind how these 3-stranded twines are constructed to maintain their form. Therefore, it is the correct explanation for the assertion.

Step 3: Final Answer:
Both Assertion A and Reason R are true, and Reason R correctly explains the construction and stability of the 3-stranded twine.