Principles of Textile Processes — Winter 2024

Explain interrelationship between shedding and beating.

Derive an equation for sley velocity and acceleration.

Explain the retardation of shuttle with hinged swell, along with necessary diagrams.

What is perfect drafting? Why it is not achieved in conventional draw frame.

Explain only procedure to find out transfer efficiency.

What is cylinder loading? Derive an equation to calculate cylinder loading.

Derive an equation for traveler speed.

Explain the term kinematics for sley.

Discuss the various factors affecting the unwinding tension.

Discuss briefly effect of l/r ratio on type of movement to sley.

Explain the significance of fiber acceleration behind top comb.

Discuss the factors affecting drafting force.

Explain foster theory of perfect drafting.

Is the acceleration of shuttle uniform? Why?

Explain briefly power required for picking.

Derive the formula for friction forces in negative let off motion also discuss design of let off mechanism.

What is cleaning efficiency of blow room?

What are the reasons of end breaks at ring frame? Discuss any two.

Derive an equation of yarn tension at any radius ‘r’

Explain, chase length and coil density in reference to optimizing yarn content on ring bobbin.

State the types of stretch in sizing and factors affecting it.

Discuss the velocity and acceleration of projectile with suitable curves.

Explain the importance of size pick up.

Derive equation of winding tension (Tw) in a spinning balloon zone.

Discuss briefly various aspects of weft insertion in airjet loom.