Question

It is a quality control study (Routine), in which the examination is in three areas across the width of output in Carding

• A. Snap
• B. Nep
• C. Waster Extraction
• D. Breakage

Hint:

Neps distribution across sliver width is a key routine quality control parameter in carding.

Answer 1

The Correct Option is B

Concept: In carding, one of the most important quality parameters is the presence and distribution of neps. Neps are small entangled fibre knots that directly affect yarn quality, fabric appearance, and spinning performance. Routine quality control in carding includes checking the uniformity of neps across the entire width of the delivered sliver. Since carding produces a web across the full machine width, quality variations can occur in different zones.

Step 1: Understand routine quality control in carding.
Carding output is evaluated regularly to ensure uniform fibre processing across width. \[ \text{Routine QC} \Rightarrow \text{Across width examination} \]

Step 2: Identify key parameter studied across width.
Among the given options:
• Snap → not a standard QC parameter
• Waster extraction → waste measurement, not width-wise study
• Breakage → machine fault, not width distribution study Neps are the only parameter that is regularly studied across width distribution.

Step 3: Reason for width-wise nep study.
Neps may vary due to: \[ \begin{aligned} &\bullet \text{Uneven carding action} &\bullet \text{Cylinder/flat settings variation} &\bullet \text{Airflow differences} \end{aligned} \] Hence, width-wise monitoring is essential.

Step 4: Final answer selection.
Thus, the correct study is: \[ \boxed{\text{Nep}} \] So, \[ \boxed{\text{Option (B) is correct.}} \]