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Previous year question hub

Opening, Cleaning and Mixing - Yarn Manufacture, Yarn Structure and Properties - Textile Engineering & Fibre Science Previous Year Questions

Practice Opening, Cleaning and Mixing - Yarn Manufacture, Yarn Structure and Properties - Textile Engineering & Fibre Science previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

12Papers
12Years
12Questions
1Topics

Opening, Cleaning and Mixing question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Opening, Cleaning and Mixing. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Easy 10 83.3%
Medium 2 16.7%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

MCQ 9 75%
Numerical Answer Type (NAT) 3 25%

Subject weightage

Top subjects by unique question coverage.

Textile Engineering & Fibre Science
12 Qs

Most asked topics

Top topics across the included previous year papers.

Yarn Manufacture, Yarn Structure and Properties
12 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Opening, Cleaning and Mixing
12 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

Textile Engineering & Fibre Science (TF) 2025
1 Qs
Textile Engineering & Fibre Science (TF) 2024
1 Qs
Textile Engineering & Fibre Science (TF) 2022
1 Qs
Textile Engineering & Fibre Science (TF) 2021
1 Qs
Textile Engineering & Fibre Science (TF) 2019
1 Qs
Textile Engineering & Fibre Science (TF) 2018
1 Qs
Textile Engineering & Fibre Science (TF) 2015
1 Qs
Textile Engineering & Fibre Science (TF) 2014
1 Qs
Textile Engineering & Fibre Science (TF) 2011
1 Qs
Textile Engineering & Fibre Science (TF) 2009
1 Qs
Textile Engineering & Fibre Science (TF) 2008
1 Qs
Textile Engineering & Fibre Science (TF) 2007
1 Qs

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
Textile Engineering & Fibre Science (TF) 202520251View paper
Textile Engineering & Fibre Science (TF) 202420241View paper
Textile Engineering & Fibre Science (TF) 202220221View paper
Textile Engineering & Fibre Science (TF) 202120211View paper
Textile Engineering & Fibre Science (TF) 201920191View paper
Textile Engineering & Fibre Science (TF) 201820181View paper
Textile Engineering & Fibre Science (TF) 201520151View paper
Textile Engineering & Fibre Science (TF) 201420141View paper
Textile Engineering & Fibre Science (TF) 201120111View paper
Textile Engineering & Fibre Science (TF) 200920091View paper
Textile Engineering & Fibre Science (TF) 200820081View paper
Textile Engineering & Fibre Science (TF) 200720071View paper

All Opening, Cleaning and Mixing previous year questions

Practice every matching question in batches of 20, with every available option.

1
2007 · Textile Engineering & Fibre Science · Yarn Manufacture, Yarn Structure and Properties · Opening, Cleaning and Mixing
Textile Engineering & Fibre Science (TF) 2007

The waste extraction in blow room, card and comber are 6%, 4% and 16% respectively. The weight of combed sliver (kg) from 1 kg of cotton from bale would be

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2
2008 · Textile Engineering & Fibre Science · Yarn Manufacture, Yarn Structure and Properties · Opening, Cleaning and Mixing
Textile Engineering & Fibre Science (TF) 2008

Cleaning efficiency (%) of blow room having four machines is 39.6. If the cleaning efficiencies of the first, second and fourth (last) machines are 10, 20 and 20 respectively, then that of the third machine is

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3
2009 · Textile Engineering & Fibre Science · Yarn Manufacture, Yarn Structure and Properties · Opening, Cleaning and Mixing
Textile Engineering & Fibre Science (TF) 2009

A blowroom is having five machines. The total cleaning efficiency for first four machines is 40%. The cleaning efficiency of the last machine is 30%. The overall cleaning efficiency (%) of the blowroom is

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4
2011 · Textile Engineering & Fibre Science · Yarn Manufacture, Yarn Structure and Properties · Opening, Cleaning and Mixing
Textile Engineering & Fibre Science (TF) 2011
Determine the correctness or otherwise of the following assertion [a] and reason [r].
[a] When the bales are highly compressed, photo cells near the inclined spiked lattice of a Hopper bale opener are set at a lower height.
[r] Position of photo cells controls the mass flow rate of tufts within the Hopper bale opener
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5
2014 · Textile Engineering & Fibre Science · Yarn Manufacture, Yarn Structure and Properties · Opening, Cleaning and Mixing
Textile Engineering & Fibre Science (TF) 2014
A cleaning unit in a blowroom is processing cotton at 600 kg/h. The waste generated is 2%. The lint to trash ratio is 60:40. The lint (in kg) accumulated in 8 hours, accurate to one decimal place, will be …….
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6
2015 · Textile Engineering & Fibre Science · Yarn Manufacture, Yarn Structure and Properties · Opening, Cleaning and Mixing
Textile Engineering & Fibre Science (TF) 2015

The blending technique that gives the most homogeneous mixing of fibres is

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7
2018 · Textile Engineering & Fibre Science · Yarn Manufacture, Yarn Structure and Properties · Opening, Cleaning and Mixing
Textile Engineering & Fibre Science (TF) 2018

The cleaning machine, located in the fine cleaning zone of blowroom, uses the following as the opening element

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8
2019 · Textile Engineering & Fibre Science · Yarn Manufacture, Yarn Structure and Properties · Opening, Cleaning and Mixing
Textile Engineering & Fibre Science (TF) 2019
An opening roller in blowroom with 100 cm length, 38 cm diameter and 2 teeth per cm² is rotating at an angular velocity of 400 rpm to deliver fibre tufts at a production rate of 500 kg/h. The intensity of opening (fibre mass in mg per tooth) of the opening roller approximately is
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9
2021 · Textile Engineering & Fibre Science · Yarn Manufacture, Yarn Structure and Properties · Opening, Cleaning and Mixing
Textile Engineering & Fibre Science (TF) 2021

In a modern high performance blowroom line, the correct sequence of machines is

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10
2022 · Textile Engineering & Fibre Science · Yarn Manufacture, Yarn Structure and Properties · Opening, Cleaning and Mixing
Textile Engineering & Fibre Science (TF) 2022

A three-bladed beater is running with an angular velocity of 600 rpm and delivering material at a rate of 600 kg/h. Number of strikes per kg of delivered material (in integer) is ______________.

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11
2024 · Textile Engineering & Fibre Science · Yarn Manufacture, Yarn Structure and Properties · Opening, Cleaning and Mixing
Textile Engineering & Fibre Science (TF) 2024

The purpose of opening in blowroom is

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12
2025 · Textile Engineering & Fibre Science · Yarn Manufacture, Yarn Structure and Properties · Opening, Cleaning and Mixing
Textile Engineering & Fibre Science (TF) 2025
A blowroom line has three beaters, each having a trash removal efficiency (cleaning index) of 30%. The trash removal efficiency (%) of the blowroom line (rounded off to 1 decimal place) is ______.
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