Download GTU BE/B.Tech 2019 Winter 6th Sem New 2162603 Rubber Equipment Design I Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER- VI (New) EXAMINATION - WINTER 2019

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Subject Code: 2162603 Date: 09/12/2019

Subject Name: Rubber Equipment Design-I

Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1

1. Write the function of Break Shoe, Oil Tank & Roll end gear in Mixing Mill. 03
2. Justify the statement “Roll speed tends to decrease with increase in roll diameter.” 04

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3. Write a short note on ‘Cross mixing devices’. 07

Q.2

1. Write about the Autofrettage construction for Autoclave. 03
2. Give a brief note on ‘Delta-ring closures’ used in Autoclave. 04
3. Explain the Uhde-Bredtschneider closure and Double-cone seal ring closure with appropriate diagram. 07
   

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   OR
   Discuss about operating, normal & transient conditions affecting during operation of High Pressure Vessels. 07

Q.3

1. What is the purpose of installing roll-preloading device? How does it work? 03
2. Write about roll-heating/cooling devices for calender. 04

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3. Discuss the compounding & processing related problems occurred during calendaring operation with their causes & remedies. 07
   OR
   Which properties are required for compound ‘used for Calendering process? 03

2. Describe the construction and working of roll cross-axis device. 04
3. Explain in detail about different types of roll configurations for calender. 07

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Q.4

1. What are the probable causes and possible solutions when stock temperature rises too quickly in internal mixer? 03
2. Write the advantages and disadvantages of internal mixer. 04
3. Explain about the function of wing. Write the effect of trailing and leading angle of wing in Internal Mixer. 07
   OR
   

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   Write the advantages of Tampered water system in Internal Mixer. 03

2. Describe in detail about ZZ2 geometry for internal mixer. 04
3. Discuss the different types of discharge doors for Internal Mixer with their advantages & disadvantages. 07

Q.5

1. Find the length of stroke required for an accumulator having a displacement of 110 liters. The diameter of plunger is 350mm. 03

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2. Which law is responsible for the working mechanism of hydraulic press? Describe in brief about the same. 04
3. Discuss in detail about the construction & working of Press classified according to source of power. 07
   OR
   Give the detailed description for the mechanical press having following designation: SV A2-1000+ 600 — 1800 x 1600 03

2. Which points should be taken into consideration while selecting a Press? 04

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3. Explain in detail about any four ram driving mechanism with diagram. 07

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