GATE 2021 Textile Engineering and Fibre Science Syllabus: The syllabus for the TF subject paper is available on this page. There are 27 subjects in GATE 2021and the syllabus of each subject is different. There will be a total of 65 questions that the candidate will have to answer in the exam. Out of these, 55 questions will be asked from the TF subject section and the Mathematics section. The remaining questions will be asked from the General Aptitude section. The candidates can check the syllabus for the TF subject from this page.
GATE 2021 Textile Engineering and Fibre Science Syllabus
The Textile Engineering and Fibre Science syllabus is divided into Mathematics and Textile Engineering Fibre Science. Under the Mathematics syllabus, there are topics like Linear Algebra, Calculus, Differential Equations, etc. Under the TF subject syllabus, there are 5 broad sections. These sections are Textile Fibers, Yarn Manufacture, Yarn Structure & Properties, Fabric Manufacture, Structure & Properties, Textile Testing, and Chemical Processing. There are various topics under each section.
ENGINEERING MATHEMATICS
Linear Algebra: Matrices and Determinants; Systems of linear equations; Eigenvalues and Eigenvectors.
Calculus: 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.
Differential Equations: 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.
Probability and Statistics: 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.
Numerical Methods: 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.
TEXTILE ENGINEERING AND FIBRE SCIENCE
Section 1: Textile Fibres
Classification of textile fibres; Essential requirements of fibre forming polymers; Gross and fine structures of natural fibres like 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 fibres; Physical and chemical methods of fibre and blend identification and blend analysis.
Molecular architecture, amorphous and crystalline phases, glass transition, plasticization, crystallization, melting, factors affecting Tg and Tm; Polymerization of nylon-6, nylon-66, poly (ethylene terephthalate), 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 such as polynosic and lyocell; Post spinning operations such as drawing, heat setting, tow-to-top conversion;Spin finish composition and applications; Different texturing methods.
Methods of investigating fibre structure such as density, x-ray diffraction, birefringence, optical and electron microscopy such as SEM and TEM, I.R. spectroscopy, thermal methods such as DSC, DMA, TMA and TGA; Structure and morphology of man-made fibres; Mechanical properties of fibres; Moisture sorption of fibres; Fibre structure-property correlation.
Section 2: 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; 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; Principles of drafting, twisting, and bobbin building in roving formation; Modern developments in roving machine; Principles of drafting, twisting and cop building in ring spinning; Causes of end breakages; Modern developments in ring spinning machine; Working principles of ring doubler and two-for-one twister; Relationship between single yarn twist and folded yarn twist; Principles of compact, rotor, air-jet, air-vortex, friction, core, wrap and twist-less spinning processes.
Influence of fibre geometry, fibre configuration and fibre 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.
Section 3: Fabric Manufacture, Structure and Properties
Principles of winding processes; Classification of winding methods; Patterning mechanism; Yarn clearers and tensioners; Different systems of yarn splicing; Warping objectives and classification; Different types of warping creels; Features of beam and sectional warping machines; Different sizing systems; Sizing of spun and filament yarns;Drawing-in process; Principles of pirn winding.
Primary and secondary motions of loom; Shedding motion; Positive and negative shedding mechanisms; Type 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; Takeup and Let-off motions; Warp and weft stop motions; Warp protection; Weft replenishment; Principles of weft insertion systems of shuttle-less weaving machines such as projectile, rapier, water-jet and air-jet; Principles of functioning of multiphase and circular looms; Types of selvedges.
Basic woven fabric constructions and their derivatives; Crepe, cord, terry, gauze, leno and double cloth constructions; Drawing and lifting plans.
Fundamentals of weft knitting; Classification of weft knitting technologies; Weft knitted constructions such as plain, rib, interlock and purl; Different knit stitches such as loop, tuck and float.
Principle of warp knitting; Classification of warp knitting technologies; Swinging and shogging motion of guide bar; Basic warp knit construction such as pillar, tricot, atlas, inlay and nets. Fibre preparation processes for nonwovens; Web formation and bonding processes; Spun-bonding and melt-blowing technologies; Applications of nonwoven fabrics.
Principles of braiding; Type of braids; Maypole braiding technology.
Peirce’s equations for plain woven fabric geometry; Elastic a 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.
GATE 2021 General Aptitude Syllabus
The General Aptitude section is common in all the papers of GATE 2021. Note that the syllabus of the General Aptitude section remains the same in all the papers. The section is divided into 2 parts – Verbal Ability and Numerical Ability. Candidates will have to answer 10 questions in this section. Out of these, 5 questions will carry 1-mark each and the remaining 5 questions will carry 2-marks each. For the GA section syllabus, candidates can look below.
Verbal Ability
- English grammar
- Sentence completion
- Instructions
- Verbal analogies
- Word groups
- Critical reasoning
- Verbal deduction
Numerical Ability
- Numerical computation
- Numerical reasoning
- Numerical estimation
- Data interpretation
GATE 2021 Textile Engineering and Fibre Science Mock Tests
The best method to prepare for GATE 2021 is through mock tests. By solving mocks, you are able to test your preparation and analyze your performance later on. This gives you a chance to improve all your weak areas. Candidates must solve a lot of tests while preparing for GATE 2021.
GATE 2021 Textile Engineering and Fibre Science Exam Pattern
Before the candidates start their preparation, they must go through the exam pattern and the marking scheme of GATE 2021. They should be aware of all the exam related information such as the section in the exam, the total number of questions, total marks, etc. It will help them in preparing better for the examination.
| Section | Total Marks |
| GA | 15% of the total marks |
| Mathematics | 15% of the total marks |
| TF – Subject-Based | 70% of the total marks |
The exam mode of GATE 2021 is online. It is a Computer Based Test (CBT) that is conducted for 3 hours. There are 3 sections in the exam – General Aptitude, Mathematics, and Subject-based section. Candidates will have to answer 2 types of questions – MCQs and NATs. There will be a total of 65 questions for a total of 100 marks in the exam. There will be negative marking for the MCQs only.
Marking scheme
| Type of question | Negative marking for wrong answer | Marking for correct answer |
| MCQs | ⅓ for 1 mark questions⅔ for 2 marks questions | 1 or 2 marks |
| NATs | No negative marking | 1 or 2 marks |
How to Prepare for GATE Textile Engineering and Fibre Science Subject?
GATE 2021 preparation is in full swing right now and there is no better time to talk about a few tips that will help you to score good marks. First of all, you must be thorough with the exam related information. Next, you must collect the latest and up-to-date study material. Once you have completed these two steps, you are ready to apply the tips that have been mentioned below. Let’s have a look at them.
Say no to mugging
It is self-explanatory that you should not mug up any of the topics in the syllabus. Mugging up feels good at the present but is disastrous when you are actually writing the exam. You must have noticed even in your mock tests that after mugging up the entire topic you are still not able to secure marks. This is because it is the wrong techniques and you should not involve in it. You just have to put a little more effort into learning and practicing the topics and you will ace the exam.
Don’t run after a lot of material
Many candidates make the mistake of taking more material as more marks. However, this is not true ad no matter how many books you collect, if you are not studying even one book sincerely then you will not score in the exam. The aim is to study from the right material. A lot of study material is not equal to more marks. Candidates should understand this fact well.
Cover the basics
It is better if you get your basics clear first and then move to the difficult topics. Make your foundation strong enough so that when the easy part is over, you are able to deal with the tough part as well. It is pretty obvious that if you don’t know the basics, you don’t know anything. So it is recommended to the candidates to aim at concept clarity and making their basics strong.
Consistency
Procrastination will not help you score in the exam, it will only slow you down and waste a lot of your time. Avoid it at all costs and make sure that you are reaching your daily targets. Consistency plays an important role in your preparation. Without it, you will not be able to achieve any of your goals and you definitely cannot secure decent marks in the exam.
Devote enough time
Most of you must be preparing along with your college studies, or job or anything else. Such candidates must learn the art of time management. You should learn how to devote enough time for GATE preparation without making any loses in your other life aspects. Devote fixed hours daily to your preparation and spend more time during the weekends.
Books for GATE TF Preparation
As we have already discussed that you should not run after a lot of study material. Your aim should be quality and not quantity. Make sure that whatever you are preparing, it is at your best capability. Pick the best study material only. We have suggested a few books for your preparation below that you can refer to.
| Title of the book | Name of the Author/ Publication |
| Fibre Science and Technology | S P Mishra |
| Handbook of Fibre Science and Technology VOL-I | M.Lewin |
| Introduction to Textiles | M.Joseph |
GATE 2021 Preparation FAQs
Q1. Can I prepare for the GATE 2021 along with my academics?
Ans. You can easily prepare for GATE 2021 with your academics on the side. You just have to devote enough time to GATE preparation daily and more hours on weekends. For GATE preparation, you don’t have to disturb your academics.
Q2. What should I avoid during my GATE preparation?
Ans. Avoid studying from a lot of books. More study material will only confuse you and waste your time. You won’t be able to complete your syllabus so it’s better that you stick to 1-2 standard books for your preparation.
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