List of top Textile Engineering and Fibre Science Questions

Group I lists yarn manufacturing technologies and Group II contains typical structural features of the yarns. Match the manufacturing technology with the structural features of the yarn.
Group I Group II
 P. Rotor spinning1. Twistless parallel fibres in core and helically arranged filament on surface
Q. Air-jet spinning 2. Helically twisted core and distinct wrappers on surface
R. Wrap spinning3. Multifilament core covered by staple fibres stuck to molten polymer
S. Bobtex spinning4. Twistless core wrapped regularly and helically by thin fibre ribbons
Determine the correctness or otherwise of the following Assertion [a] and Reason [r]:
[a]: Nylon 6 should be thoroughly dried before melt spinning 
[r]: The glass transition temperature of Nylon 6 decreases in presence of moisture
Amongst the different zones in a carding machine, if
P draft between feed roller and taker-in
Q = draft between taker-in and cylinder
R= draft between cylinder and doffer
then the drafts follow the order
Group I lists weaving machine related parameters and Group II contains the shortcomings of these parameters. Match the machine related parameter with its shortcoming.
Group I Group II
P. Variable heald staggering1. Not favourable for heavy fabric
Q. High eccentricity ratio2. Reduction in shed height
R. Fixed heald staggering3. Reduction of sley dwell
S. Late shedding Higher vibration in weaving machine4.Higher vibration in weaving machine 
One kg bone-dry cotton fabric is padded with water to obtain 80 % wet pick up. The temperature of the wet fabric after padding is 30 °C. Assume the specific heat of water to be 1 cal/(g.°C); the latent heat of evaporation of water to be 540 cal/g and the specific heat of cotton to be 0.3 cal/(g.°C). The energy (kcal) required to dry the fabric completely (in integer) is____
Determine the correctness or otherwise of the following Assertion [a] and Reason [r]:
[a]: Cotton does not exhibit melting behaviour when exposed to flame not er alline 
[r]: Cotton is not crystalline enough to exhibit melting behaviour 2024
A cotton yarn of 20 tex count is replaced by a polyester yarn such that both the yarns have the same diameter and the same packing density. Assuming densities of cotton and polyester fibres as 1.52 g/cm\(^3\) and 1.38 g/cm\(^3\), respectively, the count (tex) of the polyester yarn (rounded off to 2 decimal places) is ________________.
A knitted fabric is prepared from a yarn of 15 tex count. The fabric has 16 courses/cm, 17 wales/cm and 2.6 mm loop length. The areal density (g/m\(^2\)) of the fabric (rounded off to the nearest integer) is ________________.
A fluorocarbon-based soil release finish consists of alternating hydrophobic blocks and hydrophilic blocks arranged side by side on fabric surface. The correct statement(s) amongst the following is/are
With reference to the principles of yarn hairiness measurement, the correct statement(s), amongst the following, is/are
A 59.05 Ne cotton yarn, a 20 tex polyester/cotton blended yarn and a 90 denier polyester filament are twisted together to obtain a 3-ply yarn. Assuming there is no twist contraction, the resultant count (Ne) of the 3-ply yarn (rounded off to 2 decimal places) is____
Amongst the following, the nitrogen containing fibre(s) is/are
With reference to Shirley stiffness tester, the relationship between the fabric bending length (C) and the overhanging length (L) at the standard angle of deflection of 41.5° is approximately
Amongst the following, the correct condition(s) that will reduce bumping during weaving is/are
Amongst the following, the chemical used for bleaching of cotton fabric in acidic medium is
In a discharge printing process, two dyes of different colours, one with high dischargeability (HD) and another with low dischargeability (LD), are to be considered. The correct statement regarding the selection of dyes is
An evenness tester, working on capacitance principle, provides
Amongst the following fibre forming polymers, the one which is synthesised by chain growth polymerisation is
Amongst the following polymers, the one with the lowest glass transition temperature is
The purpose of opening in blowroom is
Amongst the following, forward as well as reverse rotary motion in cotton combing is given to