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This mock test of Textile Engineering And Fibre Science - TF 2015 GATE Paper (Practice Test) for GATE helps you for every GATE entrance exam.
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QUESTION: 1

Choose the appropriate word/phrase, out of the four options given below, to complete the following sentence:

Apparent lifelessness _________ dormant life.

Solution:

QUESTION: 2

Fill in the blank with the correct idiom/phrase.

That boy from the town was a ________ in the sleepy village.

Solution:

QUESTION: 3

Choose the statement where underlined word is used correctly.

Solution:

QUESTION: 4

Tanya is older than Eric.

Cliff is older than Tanya.

Eric is older than Cliff.

If the first two statements are true, then the third statement is

Solution:

QUESTION: 5

Five teams have to compete in a league, with every team playing every other team exactly once, before going to the next round. How many matches will have to be held to complete the league round of matches.

Solution:

QUESTION: 6

Q 6 - Q 10 carry one mark.

Select the appropriate option in place of underlined part of the sentence.

__"Increased productivity necessary"__ reflects greater efforts made by the employees.

Solution:

QUESTION: 7

Given below are two statements followed by two conclusions.

Assuming these statements to be true, decide which one logically follows.

Statements:

1. No Manager is a leader.

2. All leaders are executives.

Conclusions:

1. No manager is an executive.

2. No executive is a manager.

Solution:

*Answer can only contain numeric values

QUESTION: 8

In the given figure angle Q is a right angle, PS:QS = 3:1, RT:QT = 5:2 and PU:UR = 1:1. If area of triangle QTS is 20 cm^{2}, then the area of triangle PQR in cm^{2} is _______

(**Important **- Enter only the numerical value in the answer)

Solution:

QUESTION: 9

Right triangle PQR is to be constructed in the xy-plane so that the right angle is at P and line PR is parallel to x-axis. The x and y coordinates of P,Q and R are to be integers that satisfy the inequalities : -4 __<__ x __<__ 5 and 6 __<__ y __<__ 16. How many different triangles could be constructed with these properties?

Solution:

QUESTION: 10

A coin is tossed thrice. Let X be the event that head occurs in each of the two tosses. Let Y be the event that a tail occurs on the third toss. Let Z be the event that two tails occur in three tosses. Based on the above information, which one of the following statements is TRUE?

Solution:

*Answer can only contain numeric values

QUESTION: 11

Q. 1 – Q. 25 carry one mark each.

Q. If 3 and 4 are two eigen values of A = for some real numbers a, b, c, d, e, and f, then

the third eigen value of A is ________________

(**Important** - Enter only the numerical value in the answer)

Solution:

*Answer can only contain numeric values

QUESTION: 12

If a continuous random variable X has probability density function then the value of a is ________

(**Important** - Enter only the numerical value in the answer)

Solution:

*Answer can only contain numeric values

QUESTION: 13

The value of is __________________

(**Important** - Enter only the numerical value in the answer)

Solution:

*Answer can only contain numeric values

QUESTION: 14

If A = , then determinant of A−1 is __________________

(**Important **- Enter only the numerical value in the answer)

Solution:

*Answer can only contain numeric values

QUESTION: 15

The number of linearly independent eigen vectors of the matrix is ___________

(**Important **- Enter only the numerical value in the answer)

Solution:

QUESTION: 16

The gum in the raw silk filament is

Solution:

QUESTION: 17

For production of dry-spun acrylic fibre, the suitable solvent for dope preparation is

Solution:

QUESTION: 18

Adipic acid is a monomer for the production of

Solution:

QUESTION: 19

In melt spinning line, the melting of solid polymer and its homogenization takes place in

Solution:

QUESTION: 20

The blending technique that gives the most homogeneous mixing of fibres is

Solution:

QUESTION: 21

In a cotton comber, noil extraction increases

Solution:

QUESTION: 22

The bottom roller surface used for driving aprons in ringframe drafting system is

Solution:

QUESTION: 23

If the numerical value of yarn linear density expressed in Tex and that in English system is the

same, this value to the nearest integer is

Solution:

QUESTION: 24

Patterning is most likely to occur in

Solution:

QUESTION: 25

In cotton yarn sizing, the starch primarily acts as

Solution:

QUESTION: 26

Purl is a

Solution:

QUESTION: 27

The technology/ies used for producing SMS fabric is/are

Solution:

QUESTION: 28

Jigger CANNOT be used for

Solution:

QUESTION: 29

In the context of effluent discharge, BOD means

Solution:

QUESTION: 30

Milling is associated with the processing of

Solution:

QUESTION: 31

Dyed wool fabric standards are used for the evaluation of

Solution:

QUESTION: 32

The yarn tenacity (gf/tex) measured in lea form, compared to that measured in single yarn form is

Solution:

QUESTION: 33

The property that Kawabata Evaluation System (KES) DOES NOT measure is

Solution:

QUESTION: 34

On absorption of moisture, the thermal insulation of cotton fabric will

Solution:

QUESTION: 35

For meeting the criterion of number of defects in a product, the relationship between upper control limit (UCL) and upper specification limit (USL) should be

Solution:

*Answer can only contain numeric values

QUESTION: 36

Q. 36 – Q. 65 carry two marks each.

Q. The maximum value of is ____________

(**Important** - Enter only the numerical value in the answer)

Solution:

QUESTION: 37

Out of the following, the exact differential equation is

Solution:

*Answer can only contain numeric values

QUESTION: 38

A number is as much greater than 75 as it is smaller than 117. The number is:

(**Important** - Enter only the numerical value in the answer)

Solution:

QUESTION: 39

The normal vector to the surface at (1,1,1) is

Solution:

QUESTION: 40

Consider the analytical techniques in the Column I and the properties in Column II. Choose the correct alternative from amongst A, B, C, and D

Solution:

QUESTION: 41

If T_{g}, T_{m}, and T_{c} represent the glass transition, melting and crystallization temperature, respectively, the correct relationship is

Solution:

QUESTION: 42

The correct sequence of unit operations employed in production of viscose rayon is

Solution:

QUESTION: 43

Consider the following assertion [a] and reason [r] and choose the correct alternative from amongst A, B, C, and D.

[a] After polymerization of caprolactum, thorough washing of polymer with water is necessary to remove unreacted monomer and its oligomers.

[r] Otherwise, hydrolytic degradation of polymer would occur during melt spinning.

Solution:

QUESTION: 44

Consider the fibres in Column I and the applications in Column II. Choose the correct alternative from amongst A, B, C, and D

Solution:

*Answer can only contain numeric values

QUESTION: 45

Two polyester and six viscose rayon slivers of same count are blended on a drawframe. In the second passage, four slivers from first passage are further blended with two combed cotton slivers of the same count. The viscose (%) in the final sliver to the nearest integer is ___________

(**Important **- Enter only the numerical value in the answer)

Solution:

QUESTION: 46

In ring spinning, the tension in yarn is the maximum

Solution:

*Answer can only contain numeric values

QUESTION: 47

A core spun yarn of 30 tex is to be produced with 10% core by weight. If the cotton roving count is 540 tex, the required draft on the ringframe will be _____________

(**Important **- Enter only the numerical value in the answer)

Solution:

*Answer can only contain numeric values

QUESTION: 48

If the spindle speed of ringframe is 15000 rpm and the traveler speed at the maximum bobbin diameter of 50 mm is 0.8% less than that of the spindle. The yarn delivery rate (m/min), to the nearest integer, will be ___________

(**Important** - Enter only the numerical value in the answer)

Solution:

*Answer can only contain numeric values

QUESTION: 49

A rotor of 2 inch diameter is spinning a yarn of 16s Ne. If the twist multiplier is 5 and the fibre linear density is 0.1 tex, the average fibre flow through the transport channel, to the nearest integer, will be ____________

(**Important** - Enter only the numerical value in the answer)

Solution:

*Answer can only contain numeric values

QUESTION: 50

The groove drum in a random winder makes five revolutions for one double traverse. If the drum and package diameters are 10 cm and 5 cm, respectively, the wind per double traverse would be__________

(**Important** - Enter only the numerical value in the answer)

Solution:

QUESTION: 51

A 500-end double-lift, single-cylinder jacquard has

Solution:

*Answer can only contain numeric values

QUESTION: 52

A shuttle loom is running at 240 picks per minute. The angular velocity of bottom shaft in radian per second is nπ. The value of n is ___________________

(**Important** - Enter only the numerical value in the answer)

Solution:

*Answer can only contain numeric values

QUESTION: 53

A 51 mm long fibre has 6 % crimp. The crimped length of the fibre in mm is approximately

(**Important** - Enter only the numerical value in the answer)

Solution:

*Answer can only contain numeric values

QUESTION: 54

For a fully relaxed knitted fabric, the wale constant (K_{w}) and course constant (K_{c}) are 4.2 and 5.5, respectively. If the loop length is 0.5 cm, the loop density per cm^{2}, to the nearest integer, would be

__________

(**Important **- Enter only the numerical value in the answer)

Solution:

QUESTION: 55

Consider the following assertion [a] and reason [r] and choose the correct alternative from amongst A, B, C, and D.

[a] Cross-laid needlepunched nonwoven fabrics demonstrate higher tensile strength in machine direction.

[r] In cross-laid nonwoven fabrics, the fibres are randomly oriented.

Solution:

QUESTION: 56

If [C_{s}] and [C_{f}] represent dye concentration in the bath and in the fibre, respectively, the isotherm for dyeing of polyester with disperse dyes is represented by the figure

Solution:

QUESTION: 57

A small hard particle is stuck in the doctor blade of a roller printing machine. The printing fault on the fabric, as a result of this, is represented by the figure

Solution:

QUESTION: 58

Consider the following assertion [a] and reason [r] and choose the correct alternative from amongst A, B, C, and D.

[a] Millions of shades can be produced through ink-jet printing with only four basic colours.

[r] The colours get mixed in appropriate proportions before jetting onto the fabric.

Solution:

QUESTION: 59

[a] Fluorochemicals impart very high water repellency.

[r] Fluorochemicals significantly reduce the surface energy of the treated substrate.

Solution:

QUESTION: 60

[a] In the context of foam finishing, the narrow size distribution of foam cells increases the half life of foam.

[r] The rate of coalescing and collapsing of foam cells is low in this case.

Solution:

*Answer can only contain numeric values

QUESTION: 61

For a typical yarn tensile test, force (F) in Newton and elongation (e) in cm are related as under

F = 2 + 4e + 3e^{2}

If the yarn fails at an elongation of 3 cm, the work of rupture in N-m, accurate up to first decimal place is _____________

(**Important** - Enter only the numerical value in the answer)

Solution:

QUESTION: 62

Choose the INCORRECT statement from amongst the A, B, C, and D

Solution:

QUESTION: 63

The unique ability of woven fabric to drape in multiple curvatures is mainly due to

Solution:

*Answer can only contain numeric values

QUESTION: 64

The relationship between 50% span length of fibre (L_{1}) and 2.5% span length of fibre (L_{2}) for a given cotton variety is given by

If standard deviation (SD) of L_{2} is 4 mm, that of the L_{1} , in mm, would be_____________

(**Important** - Enter only the numerical value in the answer)

Solution:

*Answer can only contain numeric values

QUESTION: 65

The correlation coefficient (r) between two variables is 0.9. The unexplained variation (%) is ______________

(**Important** - Enter only the numerical value in the answer)

Solution:

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