This question asks to identify a fabric structure specifically related to weft knitting.
In weft knitting, yarns are interlaced horizontally, moving across the fabric width (courses). This contrasts with warp knitting, where yarns move vertically along the fabric length.
Let's examine the options provided in relation to weft knitting:
Based on the analysis, the 1x1 Rib structure is the one directly formed using weft knitting processes. The other options listed (Locknit, Reverse Locknit, Double Tricot) belong to the category of warp knitting.
Therefore, the fabric structure related to weft knitting is 1$\times$1 Rib.
A circular weft knitting machine with 24 inch gauge and 20 inch diameter needle bed is used to make a tubular knitted fabric. If the fabric shrinks by 35 % in course-wise direction upon withdrawal from the machine, the circumference (inch) of the shrunk tubular fabric is approximately
Group I gives a list of terms related to woven fabrics and Group II contains equivalent terms related to knitted fabrics. Match the term from Group I with the equivalent term from Group II.
| Group I | Group II |
| P. Cover | 1. Interlock |
| Q. Double-cloth | 2. Wales |
| R. Warp | 3. Tightness |
| S. Weft | 4. Courses |
The wale constant and course constant are 4.2 and 5.04 respectively. If the loop length is 4.2 mm, then stitch density (number/cm$^2$) is______.