Question

Consider the following and choose the correct answer with respect to Twisting of yarn. Assertion [A]: Ring rail moves fast in one direction and slow in other direction. Reason [R]: Yarn Balance is obtained by winding and binding coils

• A. [A] is true, but [R] is false
• B. Both [A] and [R] are true
• C. [A] is false, but [R] is true
• D. Both [A] and [R] are false

Hint:

Ring rail motion is non-uniform to maintain proper package build and yarn balance in ring spinning.

Answer 1

The Correct Option is B

Concept: In ring spinning, the ring rail motion is controlled to distribute yarn evenly on the bobbin. The upward and downward movements are not identical in speed, as winding conditions change due to increasing bobbin diameter. Yarn balance is achieved by proper winding and binding of coils during package formation.

Step 1: Analyze Assertion [A].
Ring rail movement is adjusted asymmetrically due to changing bobbin geometry. \[ \text{Ring rail speed variation} \Rightarrow \text{True} \]

Step 2: Analyze Reason [R].
Yarn balance depends on proper winding and binding of coils to maintain package stability. \[ \text{Yarn balance condition} \Rightarrow \text{True} \]

Step 3: Check relationship.
Both statements are correct and related to yarn package formation.

Step 4: Final answer.
\[ \boxed{\text{Both [A] and [R] are true}} \] Thus, \[ \boxed{\text{Option (B) is correct.}} \]