Textile Engineering Gate 2012 Questions with Answer
Ques 53 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].
The minimum value of thermal conductivity, in mW/(m.K), is approximately
Ques 54 GATE 2012
In a card, the wire point density is maximum on
Ques 55 GATE 2012
The spinning system that does not generate false twist during spinning is
Ques 56 GATE 2012
Most of the seed coat particles are removed in
Ques 57 GATE 2012
An eccentric top roller in a drafting system leads to
Ques 58 GATE 2012
The increase in traveller weight leads to an increase in
Ques 59 GATE 2012
Dog knot is preferred to weaver's knot during creeling because it is
Ques 60 GATE 2012
Ball warping is mainly used in the manufacture of
Ques 61 GATE 2012
Cleaning efficiency of the opening roller in a rotor spinning machine, having 56 mm diameter rotor, is 80%. The yarn breaks when the trash deposition within the rotor groove crosses the threshold of 1 mg/mm. If a sliver with 0.4% trash is fed at 7.5 g/min, the number of end breaks in 1 hr (to the nearest whole number) is
Ques 62 GATE 2012
The winding speed (difference between bobbin speed and traveller speed) of yarn in a ring frame is 200 rev/min when bobbin diameter is 28 mm. If the bobbin diameter is increased to 35 mm, the winding speed (rev/min) would be
Ques 63 GATE 2012
The weight of material on a roving bobbin is 2.4 kg. The roving hank is 600 tex. If delivery rate is 20 m/min the time (min) required to build the bobbin is
Ques 64 GATE 2012
Four polyester and four cotton carded slivers of the same count and mass CV of 4.16% are drawn together keeping a draft of 8 on a breaker drawframe. Two slivers from breaker drawframe are further drawn along with the four cotton carded slivers keeping a draft of 6 on a finisher drawframe. The polyester (%) in the final sliver is approximately
Ques 65 GATE 2012
Four polyester and four cotton carded slivers of the same count and mass CV of 4.16% are drawn together keeping a draft of 8 on a breaker drawframe. Two slivers from breaker drawframe are further drawn along with the four cotton carded slivers keeping a draft of 6 on a finisher drawframe. The mass CV (%) of the final sliver is approximately
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