R4RIN – MCQs, Mock Tests | Gate GATE Textile and Fiber Science Set 2

The fibre that contains nitrogen and sulfur is

1. Polyester
2. Wool
3. Nylon 6
4. Kevlar

✅ Correct Answer: 2

Condensation polymerization is not used to produce

1. Polyester
2. Nylon 6
3. Nylon 66
4. Polypropylene

✅ Correct Answer: 2

Wet spinning technique is commercially used to produce filament yarn of

1. Polypropylene
2. Polyester
3. Nylon 66
4. Acrylic

✅ Correct Answer: 4

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

1. Wool
2. Polypropylene
3. Cotton
4. Viscose

✅ Correct Answer: 4

Surface features of a fibre can be obtained by

1. Transmission electron microscope
2. Scanning electron microscope
3. Small angle X-ray diffractometer
4. Sonic modulus tester

✅ Correct Answer: 2

Birefringence of filament yarn is related to its

1. Crystallinity
2. Orientation
3. Individual filament denier
4. Density

✅ Correct Answer: 2

A machine that does not improve the mass evenness is

1. Drawframe
2. Ring doubler
3. Speedframe
4. Ribbon lap

✅ Correct Answer: 3

Fibre individualization in a card will increase by increasing

1. Licker-in to cylinder setting
2. Doffer speed
3. Licker-in speed
4. Cylinder speed

✅ Correct Answer: 4

ofter cots on drafting rollers result in

1. An increase in drafting wave
2. Less fibre slippage at roller nip
3. Change in draft
4. Reduced roller lapping

✅ Correct Answer: 2

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

1. Be higher
2. Be lower
3. Remain the same
4. Change depending on fibre strength

✅ Correct Answer: 1

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

1. Increase in sley eccentricity
2. Decrease in sley eccentricity
3. No change in sley eccentricity
4. Initial increase and then decrease in sley eccentricity

✅ Correct Answer: 1

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

1. Forward positive acceleration of the sley.
2. Backward positive acceleration of the sley
3. Constant forward velocity
4. Constant backward velocity

✅ Correct Answer: 1

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

1. Plain
2. Rib
3. Purl
4. Interlock

✅ Correct Answer: 4

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

1. Air vortex spinning
2. Rotor spinning
3. Friction spinning
4. Air-jet spinning

✅ Correct Answer: 3

Increase in taper angle on sectional warping drum will normally require

1. Higher warping speed
2. Lower warping speed
3. Increase in traverse speed
4. Decease in traverse speed

✅ Correct Answer: 4

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

1. Plain
2. Rib
3. Purl
4. Interlock

✅ Correct Answer: 4

The nonwoven process which has the highest production rate is

1. Needle punching
2. Hydroentangling
3. Melt blowing
4. Spunbonding

✅ Correct Answer: 4

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

1. Ionic
2. Hydrogen
3. Covalent
4. Van der Waal's force

✅ Correct Answer: 3

Disperse dye cannot generally be fixed on polyester by

1. Superheated steam at180o
2. Saturated steam at130oC
3. Dry heat at 200oC
4. Saturated steam at 100oC

✅ Correct Answer: 4

Crease resist finishing of cotton fabric does not lead to

1. Reduction in tensile strength
2. Increase in dimensional stability
3. Increase in moisture regain
4. Increase in bending length

✅ Correct Answer: 3

Two yarn samples have standard deviation of strength Ïƒ1 and Ïƒ2. If Ïƒ1 < Ïƒ2, the 'F' ratio would be

1. Ïƒ1 / Ïƒ2B.C. D.
2. Ïƒ2 / Ïƒ1
3. Ïƒ12 / Ïƒ22
4. Ïƒ22 / Ïƒ12

✅ Correct Answer: 4