Question

40's Cotton count refers to

• A. Constant weight
• B. Constant density
• C. Constant length
• D. Constant volume

Hint:

Remember the classification of yarn count systems: \[ \boxed{ \begin{array}{|c|c|} \hline \textbf{Indirect System} & \textbf{Direct System} \hline Cotton Count (Ne) & Tex Worsted Count & Denier Metric Count (Nm) & Decitex \hline \end{array} } \] For indirect systems: \[ \boxed{ \text{Higher Count} \Rightarrow \text{Finer Yarn} } \] For direct systems: \[ \boxed{ \text{Higher Count} \Rightarrow \text{Coarser Yarn} } \] A common examination question is to remember that the Cotton Count (Ne) is a constant weight system.

Answer 1

The Correct Option is A

Concept: The Cotton Count (also called the English Cotton Count or Ne) is an indirect system of expressing yarn fineness. In an indirect count system, \[ \boxed{\text{Finer the yarn } \Rightarrow \text{Higher the count}} \] The English Cotton Count is defined as: \[ \boxed{ N_e=\frac{\text{Number of hanks}}{\text{Weight in pounds}} } \] where,
• One hank of cotton yarn \(=840\) yards.
• The weight is measured in pounds. Since the weight is kept fixed (1 pound), the cotton count is known as a constant weight system. The length of yarn varies according to the fineness of the yarn.

Step 1: Understand the meaning of 40's Cotton Count.
A yarn having \[ 40's \; \text{Cotton Count} \] means that \[ 40 \] hanks, each of length \[ 840 \text{ yards}, \] together weigh \[ 1 \text{ pound}. \] Thus, \[ \text{Total Length} = 40\times840 = 33600 \text{ yards}. \] Therefore, \[ \boxed{ 40 \text{ hanks weigh }1\text{ pound.} } \]

Step 2: Identify the counting system.
Since \[ \boxed{ \text{Weight remains fixed} } \] and the length changes with the count, the English Cotton Count belongs to the \[ \boxed{\text{Constant Weight System}.} \] This is why finer yarns have higher count values.

Step 3: Examine the given options.
Option (A): Constant weight This is correct because the English Cotton Count keeps the weight fixed at one pound. \[ \boxed{\text{Correct}} \] Option (B): Constant density Density is unrelated to the definition of cotton count. \[ \boxed{\text{Incorrect}} \] Option (C): Constant length Constant length systems are direct count systems such as Tex and Denier. \[ \boxed{\text{Incorrect}} \] Option (D): Constant volume Volume is not considered in yarn count systems. \[ \boxed{\text{Incorrect}} \]

Step 4: Write the final answer.
Hence, \[ \boxed{ 40's \text{ Cotton Count refers to the Constant Weight System.} } \] Therefore, \[ \boxed{\text{Option (A) is the correct answer.}} \]