Textile Engineering Gate 2024 Questions with Answer

Ques 40 GATE 2024


A polyester fibre of circular cross-section has density of 1.38 g/cm³ and diameter of 20 µm. The fineness (denier) of the fibre (rounded off to 1 decimal place) is _______.


(16.6) is the correct answer.

Ques 41 GATE 2024


Determine the correctness or otherwise of the following Assertion [a] and Reason [r]:
[a]: The variability of fibre diameter in melt-blown nonwoven fabric is remarkably higher than that in spunbond nonwoven fabric
[r]: Hot air attenuation in melt-blown process is responsible for high variation in fibre diameter

A

Both [a] and [r] are true and [r] is the correct reason for [a]

B

Both [a] and [r] are true and [r] is not the correct reason for [a]

C

Both [a] and [r] are false

D

[a] is true but [r] is false


(a) is the correct answer.

Ques 42 GATE 2024


Amongst the following polymers, the one with the lowest glass transition temperature is _______.

A

Polyethylene

B

Polypropylene

C

Polystyrene

D

Poly(ethylene terephthalate)


(a) is the correct answer.

Ques 43 GATE 2024


Amongst the following fibre forming polymers, the one which is synthesised by chain growth polymerisation is _______.

A

Poly(ethylene terephthalate)

B

Nylon 6,6

C

Polyacrylonitrile

D

Poly(p-phenylene terephthalamide)


(c) is the correct answer.

Ques 44 GATE 2024


Poly(ethylene terephthalate) has a number average molecular weight of 25000. The degree of polymerisation (rounded off to the nearest integer) is _______.


(260) is the correct answer.

Ques 45 GATE 2024


Polymer melt flowing through a capillary exhibits die-swell. The correct statement(s) amongst the following is/are _______.

A

Die-swell is due to entropic effect

B

Die-swell is dependent on capillary length

C

Die-swell is independent of processing temperature

D

Die-swell is dependent on shear rate


(a,d) is the correct answer.

Ques 46 GATE 2024


Three melt-spun fibre samples A, B and C produced from same polymer under different conditions are found to have densities 1.10 g/cm³, 1.15 g/cm³ and 1.20 g/cm³ respectively. If the mass fraction based degree of crystallinity (xc) of A and C is 0.45 and 0.75, respectively, then xc for B (rounded off to 2 decimal places) is _______.


(0.60) is the correct answer.

Ques 47 GATE 2024


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 _______.

A

LD can be used only as illuminant colour but HD cannot be used either as ground or as illuminant colour

B

HD can be used only as ground colour but LD cannot be used either as ground or as illuminant colour

C

LD can be used only as ground colour and HD can be used only as illuminant colour

D

HD can be used only as ground colour and LD can be used only as illuminant colour


(c) is the correct answer.

Ques 48 GATE 2024


A print paste for pigment printing of cotton fabric is prepared by using a synthetic thickener. The suitable chemical, amongst the following, to build the viscosity of the print paste is _______.

A

Na₂CO₃

B

Na₂SO₄

C

CH₃COOH

D

MgCl₂


(a) is the correct answer.

Ques 49 GATE 2024


As the package builds up in a roving frame, the component(s) whose speed DOES NOT remain constant, amongst the following, is/are _______.

A

Spindle

B

Bobbin

C

Bobbin rail

D

Drafting rollers


(b,c) is the correct answer.

Ques 50 GATE 2024


Amongst the given options, the spinning technology(ies) in which the concept of spinning triangle exists is/are _______.

A

Ring spinning

B

Rotor spinning

C

Friction spinning

D

Compact spinning


(a,b) is the correct answer.

Ques 51 GATE 2024


A parallel fibre strand of 30 tex count is coming out from the nip of the front delivery rollers of a ring spinning machine. This strand is given twist to produce a yarn such that the length of the yarn becomes 0.95 times the length of the parallel fibre strand. If 600 turns are present in 1 m length of the yarn, then the twist factor (tpm⋅tex⁰.⁵) of the yarn (rounded off to the nearest integer) is _______.


(3286) is the correct answer.

Ques 52 GATE 2024


If '→' denotes increasing order of intensity, then the meaning of the words
[dry → arid → parched] is analogous to [diet → fast → _______].
Which one of the given options is appropriate to fill the blank?

A

starve

B

reject

C

feast

D

deny


(a) is the correct answer.

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