GATE (TF) Textile 2017 Question Paper Solution | GATE/2017/TF/34

Question 34 (Textile Engineering & Fibre Science)

Wool gives warmth because it has
P. A helical structure which can entrap air
Q. High heat of sorption
R. Low crystallinity
S. High extensibility

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(A)P and Q only
(B)Q and R only
(C)P and S only
(D)P and R only
Frequently Asked Questions | FAQs

Why is wool warm in winter?

Wool is often preferred in winter because it provides excellent insulation against the cold. The structural features of wool fiber, including its crimp and natural scales, create air pockets between the fibers that trap warm air and provide insulation. This makes wool an excellent choice for cold weather clothing, as it helps to keep the wearer warm and comfortable.
Wool also has the ability to wick moisture away from the skin, which helps to keep the wearer dry and prevents the buildup of moisture that can make them feel cold and uncomfortable. Unlike many synthetic fibers, wool can absorb up to 30% of its weight in moisture without feeling wet, which makes it ideal for outdoor activities in cold and damp conditions.
In addition to its insulating and moisture-wicking properties, wool is also naturally flame-resistant, odor-resistant, and easy to care for. All of these qualities make it a practical and comfortable choice for winter clothing, including sweaters, coats, hats, and gloves.
Overall, wool is an excellent choice for winter clothing because of its ability to provide warmth, insulation, and moisture management, as well as its natural durability and resistance to odors and flames.

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