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JNTU B.Tech II FABRIC MANUFACTURE I Previous Question Paper (February - 2024 - R18)

B.Tech | II | II-I | R18 | February - 2024

Answer PaperPaper Code: 153CMMaximum Marks: 75Time: 3 Hours

Note: Part A is compulsory (25 marks). In Part B, answer any one question from each unit (50 marks).

Part A

125 marks
a

What is the principle of Splicing?

2 marks

Answer

The principle of splicing involves the joining of two yarn ends by untwisting, overlapping, and then re-twisting or intermingling the fibers using a high-pressure air jet. Unlike knotting, which creates a physical bulk, splicing produces a joint that is structurally similar to the parent yarn, improving downstream processing efficiency.
b

What is the purpose of Ribbon breaker? Explain how it works.

3 marks

Answer

A ribbon breaker is a mechanism used in winding to prevent the formation of patterning or 'ribboning' on the package. It works by causing a slight, periodic variation in the speed of the drum or the traverse mechanism. This variation ensures that the yarn is laid down at a slightly different angle in successive layers, preventing the yarn from stacking directly on top of itself.
c

Mention different systems of Weft preparation.

2 marks

Answer

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d

Explain about anti-bound let off in beam warping.

3 marks

Answer

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e

What is the difference between Positive and Negative Creels?

2 marks

Answer

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f

What is meant by Wet splitting? Briefly explain.

3 marks

Answer

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g

What is the need for after waxing in sizing?

2 marks

Answer

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h

Why Motion of combs in head stock is required? Explain.

3 marks

Answer

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i

What are loom specifications mentioned for a loom?

2 marks

Answer

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j

What is the difference between Positive shedding and Negative shedding?

3 marks

Answer

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Part B

210 marks
a

Classify winding machines used in yarn preparation for weaving.

5 marks

Answer

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b

Explain about functioning Electronic Slub catcher on high speed cone winding machine.

5 marks

Answer

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OR
310 marks
a

Explain about faults in cone winding and remedies for the same.

5 marks

Answer

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b

Calculate the production (kgs) per shift of an Autoconer producing 40’s cotton yarn with drum speed is 1080 meters / min and running with an efficiency of 98%. No of winding drums on the winder is 86.

5 marks

Answer

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410 marks
a

Define weft winding. What are different types of weft winding machines?

5 marks

Answer

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b

Explain the importance and principle of bunch formation on a Pirn.

5 marks

Answer

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OR
510 marks
a

Draw a simple sketch showing Beam warping. Explain the process.

6 marks

Answer

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b

Calculate the production (meters) of warp that can be produced per day of 8 Hours on a high-speed beam warping machine, if the warping speed is 500 meters / min. The overall efficiency is 75%. No of ends is 525 and count of yarn is 30’S.

4 marks

Answer

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610 marks
a

What are the objectives of Sizing? Explain different types and forms of Sizing.

5 marks

Answer

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b

What are various elements of Sow box. Briefly explain.

5 marks

Answer

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OR
710 marks
a

Explain about stretch control in Sizing.

5 marks

Answer

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b

Explain different methods of drying the sized warp.

5 marks

Answer

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810 marks
a

What is the need for control of moisture in sized warp? How it can be controlled?

5 marks

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b

Explain about migratory behavior of warp ends in sizing.

5 marks

Answer

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OR
910 marks
a

Explain about any two sizing faults and mention the remedies for same.

4 marks

Answer

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b

A warp containing 2800 ends is required to be sized to 25%. The length of sized warp on the beam is required to be 1080 yards. If the count of yarn is 40’S. Find i) Weight of size to be put on the warp, ii) The weight of sized warp, iii) The count of the sized warp.

6 marks

Answer

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1010 marks
a

Explain about heald reversing motion on a plain Tappet shedding loom.

5 marks

Answer

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b

Mention various elements in picking mechanism and write their functions.

5 marks

Answer

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OR
1110 marks
a

Classify the types of Looms.

3 marks

Answer

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b

What is the difference between Early shedding and Late shedding.

3 marks

Answer

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c

A loom is running at 300 rpm and producing cloth with 64 picks per inch. If the efficiency of the loom is 88 %. Calculate the production of the loom per shift of 8 hours.

4 marks

Answer

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About this paper

This page contains the question paper of FABRIC MANUFACTURE I from JNTU for B.Tech TTE II II-I, February - 2024, R18.

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