Principles of Textile Processes — Summer 2023

Explain the term kinematics for sley.

Discuss briefly various aspects of weft insertion in airjet loom.

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

Explain the significance of fiber acceleration behind top comb.

Discuss the factors affecting drafting force.

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

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

State the configuration of fibers in card sliver.

Explain only procedure to find out transfer efficiency.

Derive equation of winding tension in a spinning balloon zone.

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

Discuss the various factors affecting the unwinding tension.

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

Briefly write about the factors which influence uniform acceleration during picking.

Discuss the causes of end breaks in ring frame.

With suitable curves discuss the velocity and acceleration of projectile.

Explain interrelationship between shedding and beating.

Derive an equation for sley velocity and acceleration

Which factors are considered for the optimization of cleaning at blow room.

Explain briefly about Alacrity of picking mechanism.

Write short note on power required for picking.

Explain with neat sketch various types of stretch zones in sizing machine.

Explain the importance of size pick up.

Derive an equation for traveler speed.

Explain foster theory of perfect drafting.