Textile Engineering Gate 2019 Questions with Answer
Ques 53 GATE 2019
In a vibroscope, the fundamental resonant frequency of fibre X is twice that of fibre Y. Keeping the test length and tensioning weight the same, if the linear density of fibre Y is 10 denier, then the linear density (denier) of fibre X (rounded off to 1 decimal place) is
Ques 54 GATE 2019
The 95% confidence limits of mean yarn tenacity (cN/tex) based on 100 test samples are 30 ± 1.5. How many test samples are required to obtain 95% confidence limits of 30 ± 0.5?
Ques 55 GATE 2019
The term 'half-lap' is associated with
Ques 56 GATE 2019
In a modern card, the highest angular velocity (rpm) is found in
Ques 57 GATE 2019
For multifilament yarns, optimum add-on (%) of size is in the range
Ques 58 GATE 2019
Six carded slivers of 4 ktex each are drawn to produce a sliver of 5 ktex. The draft required (rounded off to 1 decimal place) is ________.
Ques 59 GATE 2019
The ratio of yarn tensile modulus to fibre tensile modulus, where the surface fibres are inclined at a twist angle of 25°, (rounded off to 2 decimal places) is __________.
Ques 60 GATE 2019
An opening roller in a blowroom with 100 cm length, 38 cm diameter, and 2 teeth per cm² is rotating at an angular velocity of 400 rpm to deliver fiber tufts at a production rate of 500 kg/h. What is the approximate intensity of opening (fiber mass in mg per tooth) of the opening roller?
Ques 61 GATE 2019
A drawframe with a 3 over 3 drafting arrangement, having an eccentric bottom middle roller of 28 mm diameter, is used to produce a sliver. The back zone and front zone drafts are 1.7 and 3.5, respectively. The sliver is further given a draft of 200 to produce a yarn. The wavelength (m) of the periodic fault in the yarn approximately is
Ques 62 GATE 2019
Determine the correctness or otherwise of the following Assertion [a] and the Reason [r]
[a]: The short term mass irregularity of rotor yarn is less than that of ring yarn.
[r]: Rotor yarn has belt or wrapper fibres, but ring yarn does not.
Ques 63 GATE 2019
The spindle speed of a ring frame, producing a yarn of 25 tex, is 25000 rpm and the rate of delivery is 25 m/min. The twist multiplier $(m^{-1} \cdot tex^{0.5})$ of the yam is
Ques 64 GATE 2019
If the value of twist retraction of a yarn is 0.2, then the value of twist contraction (rounded off to 2 decimal places) is
Ques 65 GATE 2019
A yarn is passing through an additive type tensioner. The mass of dead weight on disc is 50 g and the coefficient of friction between yarn and disc is 0.3. If the input tension is 50 gf, then the output tension (gf) is
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