Question

In case of weft knitted fabric \(\underline{\hspace{2cm}}\) structure, each wale consists of alternate face and back loops.

• A. Rib
• B. Plain single jersey
• C. Interlock
• D. Purl

Hint:

Differentiate knit structures by the loop arrangement: - Jersey: All loops same in all wales. - Rib: Alternate wales of face and back loops. - Purl: Alternate loops of face and back in the same wale. - Interlock: Two inter-knitted rib structures.

Answer 1

The Correct Option is D

Step 1: Understand the basic knitted loop structures. A wale is a vertical column of loops. 
- Face loop (Knit stitch): The head of the loop is behind the legs. 
- Back loop (Purl stitch): The legs of the loop are behind the head. 
 

Step 2: Analyze the loop structure of each fabric type. 
- Plain single jersey: All loops in the entire fabric are of one type (e.g., all face loops). Wales consist only of face loops on the technical face of the fabric. 
- Rib fabric: Consists of wales of face loops alternating with wales of back loops. For example, a 1x1 rib has one wale of face loops, then one wale of back loops, and so on. Within a single wale, all loops are the same type. 
- Interlock fabric: It's like two 1x1 rib fabrics inter-knitted. All wales appear as face loops on both sides of the fabric. 
- Purl fabric: This structure is characterized by having both face and back loops in the same wale. This creates horizontal stretch and a fabric that looks the same on both sides, often with horizontal ridges. 

Conclusion: A structure where a single wale contains both face and back loops is the definition of a purl knit fabric.