Gate/GATE Textile and Fiber Science Set 2 Sample Test,Sample questions

Question:
 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


Question:
 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


Question:
 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


Question:
 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


Question:
 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


Question:
A machine that does not improve the mass evenness is

1.Drawframe

2.Ring doubler

3.Speedframe

4.Ribbon lap


Question:
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


Question:
Birefringence of filament yarn is related to its

1.Crystallinity

2.Orientation

3.Individual filament denier

4.Density


Question:
Condensation polymerization is not used to produce

1. Polyester

2.Nylon 6

3.Nylon 66

4.Polypropylene


Question:
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


Question:
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


Question:
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


Question:
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


Question:
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


Question:
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


Question:
The fibre that contains nitrogen and sulfur is

1.Polyester

2.Wool

3. Nylon 6

4.Kevlar


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

1.Wool

2.Polypropylene

3.Cotton

4.Viscose


Question:
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


Question:
The nonwoven process which has the highest production rate is

1.Needle punching

2.Hydroentangling

3.Melt blowing

4.Spunbonding


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

1. σ1 / σ2B.C. D.

2. σ2 / σ1

3.σ12 / σ22

4.σ22 / σ12


Question:
Wet spinning technique is commercially used to produce filament yarn of

1.Polypropylene

2.Polyester

3.Nylon 66

4.Acrylic


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