GATE (TF) Textile 2016 Question Paper Solution | GATE/2016/TF/12

Question 12 (Textile Engineering & Fibre Science)

In which region of ring spinning, Coriolis force acts?

(A)Lappet to ring cop
(B)Delivery pair of drafting rollers to lappet
(C)Back pair of drafting rollers to delivery pair of drafting rollers
(D)Feed bobbin to back pair of drafting rollers
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Frequently Asked Questions | FAQs

What is the coriolis force on spinning object?

The Coriolis force is a fictitious force that appears to act on objects that are in motion relative to a rotating reference frame, such as the Earth. It is named after the French mathematician Gaspard-Gustave de Coriolis, who first described it mathematically in 1835.
When an object is spinning, it has a velocity that is tangential to the circumference of the circle it is moving in. As a result, it experiences a centrifugal force that acts away from the center of the circle. In addition to this centrifugal force, a spinning object also experiences a Coriolis force, which acts perpendicular to the object’s velocity and to the axis of rotation.
The magnitude of the Coriolis force on a spinning object depends on the object’s mass, its velocity, the rate of rotation of the reference frame, and the angle between the object’s velocity and the axis of rotation. Generally, the Coriolis force is greater for faster moving objects and for objects that are farther away from the axis of rotation.
The Coriolis force has important effects in many areas of science and engineering, including atmospheric and oceanic circulation, the motion of projectiles, and the behavior of rotating machinery.

What forces act on Ring traveller?

A ring traveler is a device used in spinning machines to guide the yarn as it is being spun. It is a ring-shaped component that rotates around a ring rail while holding the yarn in place. There are several forces that act on a ring traveler during its operation. These include:

Centrifugal force: As the ring traveler rotates around the ring rail, it experiences a centrifugal force that pulls it outward. This force is proportional to the speed of rotation and the mass of the traveler.

Frictional force: The ring traveler and the ring rail are in contact with each other, and there is a frictional force that acts between them. This force helps to keep the traveler in place and prevents it from slipping off the rail.

Tension force: The yarn passing through the ring traveler is under tension, which creates a force that pulls the traveler towards the yarn. This force is proportional to the tension in the yarn and the angle of the traveler.

Air resistance force: As the ring traveler rotates, it moves through the air and experiences air resistance. This force opposes the motion of the traveler and can reduce its speed.

All of these forces must be taken into account when designing and operating spinning machines to ensure that the ring traveler functions properly and produces high-quality yarn.

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