Textile Engineering Gate 2012 Questions with Answer
Ques 40 GATE 2012
The chemical that is used to convert soda cellulose to sodium cellulose xanthate in the manufacture of viscose rayon is
Ques 41 GATE 2012
The fibre that will float on water is
Ques 42 GATE 2012
The range of spinning speed (m/min) used in the manufacture of partially oriented polyester yarn is
Ques 43 GATE 2012
Drawing of synthetic filament does not lead to an increase in
Ques 44 GATE 2012
A 51 mm long fibre has 6% crimp. The crimped length of the fibre in mm is approximately
Ques 45 GATE 2012
On a mass based evenness tester, thin place in a yarn at -40% setting is counted if mass per unit length is
Ques 46 GATE 2012
Ratio of grab strength to strip strength is the highest when fabric extension (%) is
Ques 47 GATE 2012
Bursting strength of a woven fabric with the same warp and weft yarns is the highest when the ratio of ends/cm and picks/cm is
Ques 48 GATE 2012
Fabric abrasion resistance cannot be assessed by the loss in
Ques 49 GATE 2012
A 225 denier viscose yarn has a breaking strength of 7.5 N. The yarn tenacity in cN/dtex is
Ques 50 GATE 2012
Match the property from Group I with the characterization technique from Group II.
Group I
| Group I | Group II |
|---|---|
| P. Spherulite size | 1. Optical microscopy |
| Q. Degradation temperature | 4. Thermogravimetric analysis |
| R. Crystalline orientation | 2. X-ray diffraction |
| S. Melting temperature | 3. Differential scanning calorimetry |
Ques 51 GATE 2012
Yarns Y₁ and Y₂ have the same strength when tested at 200 mm gauge length. If mass unevenness CV (%) of yarns Y₁ and Y₂ are 10 and 20 respectively, the ratio of the strength of yarns Y₁ and Y₂ when tested at 500 mm gauge length is
Ques 52 GATE 2012
The thermal conductivity of a nonwoven fabric is given by
λ=0.03+0.00005ρ+0.15/ρ
where λ is the thermal conductivity of the fabric in W/(m.K), ρ is the bulk density of the fabric in kg/m³, and ρ ∈[10,200].
Thermal conductivity is minimum when the bulk density is approximately
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