GATE (TF) Textile 2010 Question Paper Solution | GATE/2010/TF/32

Question 32 (Textile Engineering & Fibre Science)

Which of the following statements are NOT true ?

PRing spun yarns have higher fibre migration than DREF-2 friction spun yarns
QThe rotor spun yarns have uniform twist structure across the cross-section
RAir jet spun yarn is formed by fibre wrapping
SMinimum number of fibres required for a particular count yarn is higher for ring spun yarns as compared to rotor spun yarns
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Frequently Asked Questions | FAQs

What is the structure of spun yarn?

Spun yarn is a type of yarn made by twisting or spinning fibers together to create a single, cohesive strand. The structure of spun yarn can vary depending on the type of fiber, spinning method, and intended use, but generally, it consists of three parts: fibers, twist, and structure.
Fibers: The fibers used to make spun yarn can come from a variety of sources, including animal, plant, and synthetic materials. The fibers are typically carded or combed to align them and remove any impurities, creating a loose, fluffy mass called a roving.
Twist: The fibers in the roving are then twisted together using a spinning wheel or other tool. This twisting action creates tension in the fibers, causing them to bind together and form a cohesive strand of yarn. The amount of twist used can vary depending on the desired properties of the yarn, such as its strength or elasticity.

Structure: The structure of the spun yarn can also vary depending on the method used to create it. Some types of spun yarn, such as singles, consist of a single strand of twisted fibers. Other types, such as plied yarns, are made by twisting two or more strands of spun yarn together. The structure of the yarn can also affect its properties, such as its durability, drape, and texture.

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