GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VIII(NEW) EXAMINATION - SUMMER 2019
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Subject Code:2182901
Subject Name:Principles of Textile Processes
Date:15/05/2019
Time:10:30 AM TO 01:00 PM
Total Marks: 70
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
Q.1 Explain The Importance Of Size Pick Up. MARKS = 14
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Q.2 Write Short Note On Power Required For Picking. MARKS = 14
Q.3 Explain Foster Theory Of Perfect Drafting. MARKS = 14
Q.4 Explain The Significance Of Fiber Acceleration Behind Top Comb. MARKS = 14
Q.5 Explain Only Procedure To Find Out Transfer Efficiency. MARKS = 14
Q.5 Derive An Equation For Traveler Speed. MARKS = 07
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OR
What Are The Reasons Of End Breaks At Ring Frame? Discuss. MARKS = 07
Q.1 What Is Cleaning Efficiency Of Blow Room? MARKS = 07
Q.2 Discuss The Factors Affecting Drafting Force. MARKS = 07
Q.3 Define Transfer Ratio And Residual Ratio. Derive An Equation To Find Transfer Ratio Of Card. MARKS = 07
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OR
State The Limitations Of Negative Friction Type Let Off Motion. MARKS = 07
Q.4 Why Perfect Drafting Is Not Achieved In Conventional Draw Frame? MARKS = 07
Q.5 Derive The Formula For Friction Forces In Negative Let Off Motion Also Discuss Design Of Let Off Mechanism. MARKS = 07
State The Configuration Of Fibers In Card Sliver. MARKS = 07
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Q.1 Discuss The Factors Affecting Drafting Force. MARKS = 07
Q.2 Derive An Equation Of Yarn Tension At Any Radius ‘R’ MARKS = 07
OR
Write The Various Factors Affecting Motion Of Sley. MARKS = 07
Q.3 Derive Equation Of Winding Tension (Tw) In A Spinning Balloon Zone. MARKS = 07
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Q.4 Discuss The Importance Of Size Pick. MARKS = 07
Q.5 Explain ‘Alacrit” With Respect To Picking Mechanism MARKS = 07
Discuss Interrelationship Between Shedding And Beat Up Briefly. MARKS = 07
Q.1 Derive An Equation For Sley Velocity With Necessary Assumptions And Draw The Curve. MARKS = 07
OR
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Is The Acceleration Of Shuttle Uniform? Why? MARKS = 07
Q.2 State The Types Of Stretch In Sizing And Factors Affecting It. MARKS = 07
Q.3 Explain Briefly Power Required For Picking. MARKS = 07
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