Covers textile manufacturing, fibre technology, fabric design, and textile testing, for roles in the textile and apparel industries.

GATE Textile Engineering and Fibre Science

Official 2025 syllabus extracted from https://gate2025.iitr.ac.in/doc/2025/GATE%20_TF_2025_Syllabus.pdf

Engineering Mathematics

Matrices and determinants

Systems of linear equations

Eigen values and eigen vectors

Linear Algebra

Limit, continuity and differentiability

Successive differentiation

Partial differentiation

Maxima and minima

Errors and approximations

Definite and improper integrals

Sequences and series

Test for convergence

Power series

Taylor series

Calculus

First order linear and non-linear differential equations

Higher order linear differential equations with constant coefficients

Euler-Cauchy equation

Partial differential equations

Wave and heat equations

Laplace's equation

Differential Equations

Random variables

Poisson, binomial and normal distributions

Mean, mode, median, standard deviation

Confidence interval

Test of hypothesis

Correlation analysis

Regression analysis

Analysis of variance

Control charts

Probability and Statistics

Numerical solutions of linear and non-linear algebraic equations

Numerical integration by trapezoidal and Simpson's rules

Single-step and multi-step numerical methods for differential equations

Numerical Methods

Textile Fibres

Classification of textile fibres

Essential requirements of fibre forming polymers

Gross and fine structures of natural fibres: cotton, wool, silk

Introduction to bast fibres

Properties and uses of natural and man-made fibres including carbon, aramid and ultra-high molecular weight polyethylene

Physical and chemical methods of fibre and blend identification

Blend analysis

Classification and Identification of Fibres

Molecular architecture

Amorphous and crystalline phases

Glass transition, plasticization, crystallization, melting

Factors affecting Tg and Tm

Polymerization of nylon-6, nylon-66, PET, polyacrylonitrile and polypropylene

Melt spinning processes for PET, polyamide and polypropylene

Preparation of spinning dope

Principles of wet spinning, dry spinning, dry-jet-wet spinning and gel spinning

Spinning of acrylic, viscose and other regenerated cellulosic fibres (polynosic, lyocell)

Post spinning operations: drawing, heat setting, tow-to-top conversion

Spin finish composition and applications

Different texturing methods

Fibre Formation and Spinning

Methods of investigating fibre structure: density, X-ray diffraction, birefringence

Optical and electron microscopy (SEM, TEM)

IR spectroscopy

Thermal methods: DSC, DMA, TMA, TGA

Structure and morphology of man-made fibres

Mechanical properties of fibres

Moisture sorption of fibres

Fibre structure-property correlation

Fibre Structure and Properties

Yarn Manufacture, Yarn Structure and Properties

Principles of ginning

Principles of opening, cleaning and blending

Working principles of modern blow room machines

Fundamentals of carding

Conventional vs modern carding machine

Card setting and card clothing

Periodic mass variation in card sliver

Card auto leveller

Principles of roller drawing

Roller arrangements in drafting systems

Periodic mass variation in drawn sliver

Draw frame auto leveller

Principles of cotton combing

Combing cycle and mechanisms

Recent developments in combing machine

Roving formation: drafting, twisting, bobbin building

Modern developments in roving machine

Ring spinning: drafting, twisting, cop building

Causes of end breakages

Modern developments in ring spinning machine

Ring doubler and two-for-one twister

Relationship between single yarn twist and folded yarn twist

Compact, rotor, air-jet, air-vortex, friction, core, wrap and twist-less spinning

Yarn Manufacture

Influence of fibre geometry, configuration and orientation in yarn

Fibre packing density of yarn

Yarn diameter

Yarn twist and its relation to yarn strength

Helical arrangement of fibres in yarns

Yarn contraction

Fibre migration in yarns

Stress-strain relation in yarn

Mass irregularity of yarn

Structure-property relationship in ring, compact, rotor, air-jet and friction spun yarns

Yarn Structure and Properties

Fabric Manufacture, Structure and Properties

Principles of winding processes

Classification of winding methods

Patterning mechanism

Yarn clearers and tensioners

Yarn splicing systems

Warping objectives and classification

Warping creels

Features of beam and sectional warping machines

Sizing systems for spun and filament yarns

Drawing-in process

Principles of pirn winding

Preparatory Processes

Primary and secondary motions of loom

Shedding motion: positive and negative mechanisms

Types of sheds

Tappet, dobby and jacquard shedding

Weft insertion

Mechanics of weft insertion with shuttle

Shuttle picking and checking

Beat-up

Kinematics of sley

Loom timing diagram

Cam designing

Effect of sley setting and cam profile on fabric formation

Take-up and Let-off motions

Warp and weft stop motions

Warp protection

Weft replenishment

Shuttle-less weaving: projectile, rapier, water-jet, air-jet

Multiphase and circular looms

Types of selvedges

Weaving

Basic woven fabric constructions and their derivatives

Crepe, cord, terry, gauze, leno and double cloth constructions

Drawing and lifting plans

Woven Fabric Construction

Fundamentals of weft knitting

Classification of weft knitting technologies

Weft knitted constructions: plain, rib, interlock, purl

Knit stitches: loop, tuck, float

Principle of warp knitting

Classification of warp knitting technologies

Swinging and shogging motion of guide bar

Warp knit constructions: pillar, tricot, atlas, inlay, nets

Fibre preparation for nonwovens

Web formation and bonding processes

Spun-bonding and melt-blowing technologies

Applications of nonwoven fabrics

Principles of braiding

Types of braids

Maypole braiding technology

Knitting and Nonwovens

Peirce's equations for plain woven fabric geometry

Elastica model of plain-woven fabric

Thickness, cover and maximum set of woven fabrics

Geometry of plain weft knitted loop

Munden's constants and tightness factor for plain weft knitted fabrics

Geometry of tubular braids

Fabric Geometry

Textile Testing

Sampling techniques for fibres, yarns and fabrics

Sample size and sampling errors

Moisture in textiles

Fibre length, fineness, crimp, maturity and trash content

Tensile testing of fibres

High volume fibre testing

Sampling and Fibre Testing

Linear density of sliver, roving and yarn

Twist and hairiness of yarn

Tensile testing of yarns

Evenness testing

Fault measurement and analysis of yarns

Yarn Testing

Fabric thickness, compressibility, stiffness, shear, drape, crease recovery

Tear strength, bursting strength

Pilling and abrasion resistance

Tensile testing of fabrics

Objective evaluation of low stress mechanical characteristics

Air permeability

Wetting and wicking

Water-vapour transmission through fabrics

Thermal resistance of fabrics

Fabric Testing

Chemical Processing

Impurities in natural fibre

Singeing

Chemistry and practice of preparatory processes for cotton

Preparatory processing of wool and silk

Mercerization of cotton

Preparatory processes for manmade fibres and their blends

Optical brightening agent

Classification of dyes

Dyeing of cotton, wool, silk, polyester, nylon and acrylic

Dyeing

GATE Textile Engineering and Fibre Science Syllabus 2025, 2026 and more: Subjects, Topics, and What to Study