Textile Engineering And Fibre Science - TF 2013 GATE Paper (Practice Test) - GATE

Friendship, no matter how _________it is, has its limitations.

Select the pair that best expresses a relationship similar to that expressed in the pair: 

Medicine: Health

Q. 6 to Q. 10 carry two marks each.

Q. X and Y are two positive real numbers such that 2X + Y < 6 and X + 2Y < 8. For which of the following values of (X, Y) the function f(X, Y) = 3X + 6Y will give maximum value?

If |4X - 7| = 5 then the values of 2 |X| - | - X| is:

Following table provides figures (in rupees) on annual expenditure of a firm for two years - 2010 and 2011.

In 2011, which of the following two categories have registered increase by same percentage?

A firm is selling its product at Rs. 60 per unit. The total cost of production is Rs. 100 and firm is earning total profit of Rs. 500. Later, the total cost increased by 30%. By what percentage the price should be increased to maintained the same profit level.

Abhishek is elder to Savar.

Savar is younger to Anshul.

Which of the given conclusions is logically valid and is inferred from the above statements?

Q. 11 – Q. 35 carry one mark each.

Q. The fibre that contains nitrogen and sulfur is

Condensation polymerization is not used to produce

Wet spinning technique is commercially used to produce filament yarn of

The fibre that dissolves in 59% (w/w) sulfuric acid solution is

Surface features of a fibre can be obtained by

Birefringence of filament yarn is related to its

A machine that does not improve the mass evenness is

Fibre individualization in a card will increase by increasing

Softer cots on drafting rollers result in

Compared to the spinning of finer cotton yarns, the preferred rotor diameter for the production of very coarse cotton yarns would

Amongst the following, the suitable technology for producing core spun yarn is

Increase in taper angle on sectional warping drum will normally require

Increase in the ratio of the length of crank to the length of connecting rod leads to

Shuttle remains on the race board during its flight in the shed because of

In weft knitted fabrics of the same mass per unit area produced from the same yarns, the structure which will give the highest thickness is

The nonwoven process which has the highest production rate is

During bleaching of cotton with H₂O₂, the stabilizer used is

The highest washing fastness in a dyed cotton fabric would be obtained if the dye-fibre bond is

Disperse dye cannot generally be fixed on polyester by

Crease resist finishing of cotton fabric does not lead to

Two yarn samples have standard deviation of strength σ₁ and σ₂. If σ₁ < σ₂, the 'F' ratio would be

Nep count in a cotton fibre sample is measured by

In a given woven fabric the extension at break in weft direction is higher than that in warp direction. During bursting strength test, the threads that will always break first are

CSP of yarn is equal to the product of

Questions Q.35 to Q.42 are numerical answer type. The answer to each of these questions is either a positive whole number, or a positive real number with maximum of 2 decimal places.

Q. If the moisture regain of a fibre is 10%, its moisture content (%) is _______ .

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

Q. 36 to Q. 65 carry two marks each.

A market survey by a garment manufacturing company revealed that the chest width of their target customers had normal distribution with a mean of 54 cm. If 18% of customers surveyed have chest width greater than 58 cm and 75% of customers surveyed have chest width greater than 52 cm, the percentage of customers having chest width between 56 cm and 58 cm is ________.

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

The relationship between load (y) in N and elongation (x) in mm of a cotton fabric is y = √x . If the breaking elongation of the fabric is 9 mm, the work of rupture, in N.mm, is________.

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

On twisting, the denier of a multifilament yarn consisting of 300 filaments of 3 denier each becomes 1100. If 11 km of untwisted filament yarn is twisted, its length in km will be __________.

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

A loom is producing 2 m wide grey fabric with 8% weft crimp. Assuming that the loom is running at 570 rpm with 90% efficiency, the weft consumption in kg/hr of 30 tex yarn will be _______.

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

The strength of 100 g/m² fabric obtained by testing 4 cm wide strip is 0.4 kN. The tenacity (cN/tex) of the fabric is ______.

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

Out of 100 textile companies, 10 companies are involved in spinning, weaving and chemical processing, 25 companies are involved in spinning and chemical processing, and 30 companies are involved in weaving and chemical processing. If 65 companies are involved in chemical processing, the number of companies involved ONLY in chemical processing is_______.

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

In a card the probability of fibre transfer from cylinder to doffer in one revolution of cylinder is 0.2. The probability that a particular fibre will be transferred to the doffer within the first three revolutions of cylinder is _______.

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

Questions Q.43 to Q.65 are multiple choice type.

Q. The particular integral of  

The inverse of the matrix  is

Consider the following assertion [a] and reason [r] and choose the most appropriate answer

[a] Nylon 6 is polymerized using only single monomer caprolactum

[r] Synthesis of Nylon 6 is basically an addition polymerization

Consider the following assertion [a] and reason [r] and choose the most appropriate answer

[a] Sodium cellulose xanthate formation is an essential unit operation in the production of viscose rayon

[r] It helps to reduce the degree of polymerization of cellulose

Consider the following assertion [a] and reason [r] and choose the most appropriate answer

[a] In false-twist friction texturing, the ratio of input to output tension is kept close to one

[r] Broken filaments and tight spots are within the acceptable limits at this condition

Consider the following assertion [a] and reason [r] and choose the most appropriate answer

[a] Heat setting increases the dimensional stability of synthetic fabrics

[r] The free energy reduces as a result of heating

The advantage of flyer leading over bobbin leading speed-frame is

The daily production of a mill is 1200 kg of 30 tex and 1200 kg of 20 tex yarns. The average yarn tex produced by this mill is

A square plain jammed woven fabric of 0.5 mm thickness is to be produced from polyester yarns. Assuming circular yarn cross-section, the number of picks per cm in the fabric on the loom is approximately

On a winding machine, if the winding speed is increased from 1000 m/min to 1200 m/min, the percentage increase in the yarn tension will be approximately

Choose the correct alternative from amongst A, B, C and D

In the case of reactive dyeing of cotton, the exhaustion is 70% and reaction efficiency is 80%. Assuming that the initial dye concentration is 2% on the weight of fabric, the amount of unreacted dye on the fabric expressed as a percentage of fabric weight would be

Consider the following assertion [a] and reason [r] and choose the most appropriate answer

[a] Controlled reduction treatments are commercially used for shrink resist finishing of wool

[r] Reduction disrupts the disulphide bonds, which are responsible for wool shrinkage

The principle which cannot be used to measure hairiness of yarn is

The abrasion cycles on a flat abrasion tester increase with an increase in

Common Data Questions

Common Data for Questions 58 and 59:

A winding machine without anti-patterning device has the following particulars:

A 3.5 degree constant taper cone is built on the above cone winder with no movement of the point of drive during the package build up. At mean cone diameter of 150 mm the package rev/min is 1375.

Q. The number of times major patterning will occur in producing 200 mm mean diameter package on 40 mm mean diameter core is

Common Data Questions

Common Data for Questions 58 and 59:

A winding machine without anti-patterning device has the following particulars:

A 3.5 degree constant taper cone is built on the above cone winder with no movement of the point of drive during the package build up. At mean cone diameter of 150 mm the package rev/min is 1375.

Q. Distance in mm of point of drive from the base of the cone along the traverse is approximately

Common Data for Questions 50 and 51:

Consider the following particulars for a spinning line producing 30 tex yarn from 150 militex polyester fibre.

Q. The mass CV% of roving is approximately

Common Data for Questions 50 and 51:

Consider the following particulars for a spinning line producing 30 tex yarn from 150 militex polyester fibre.

Q. Index of irregularity of yarn is approximately

Linked Answer Questions

Linked Answer Questions 62 and 63:

The angle subtended by the half-lap on the cylinder comb is 90o. The time taken by the half-lap to comb a fringe is 0.04 s.

Q. The speed of the comber in nips/min is

Linked Answer Questions

Linked Answer Questions 62 and 63:

The angle subtended by the half-lap on the cylinder comb is 90o. The time taken by the half-lap to comb a fringe is 0.04 s.

Q. From the following data, calculate approximate production rate in kg/hr

Linked Answer Questions 64 and 65:

Viscose fabric is to be resin finished with DMDHEU by pad-dry-cure method. Assume that

Q. The resin add-on after padding in kg per kg of fabric will be

Linked Answer Questions 64 and 65:

Viscose fabric is to be resin finished with DMDHEU by pad-dry-cure method. Assume that

Q. Assuming that the reaction takes place in amorphous region only and that the fabric crystallinity is 33%, the number of cross links formed per anhydroglucose unit after curing would be approximately