Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 6th Sem New 2162603 Rubber Equipment Design I Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI(NEW) ? EXAMINATION ? SUMMER 2019
Subject Code:2162603 Date:16/05/2019
Subject Name:Rubber Equipment Design-I
Time:10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) List the factors on which batch size of mixing mill depends. 03
(b) Justify the statement that ?Roll speed tends to decrease with increase in roll
diameter.?
04
(c) State the importance of cross mixing. Short note on ?cross mixing devices?. 07
Q.2 (a) Write about the jacket for high pressure vessels. 03
(b) Describe the ?Shrink-fit? and ?Autofrettage? type of constructions for high
pressure vessels.
04
(c) Explain the Bridgeman closure and Delta-ring closure in detail. 07
OR
(c) Discuss about the Uhde-Bredtschneider closure and Double-cone seal ring
closure with appropriate diagram.
07
Q.3 (a) What are the probable causes and possible solutions when stock temperature
rises too quickly in internal mixer?
03
(b) Write the advantages and disadvantages of internal mixer. 04
(c) Write the importance of rotor shaft seals used in internal mixer. Discuss the
different designs of the same.
07
OR
Q.3 (a) Compare the drop door and old type sliding door used as discharge door for
internal mixer.
03
(b) Describe in detail about ZZ2 geometry for internal mixer. 04
(c) Explain in detail about heat transfer in internal mixer. 07
Q.4 (a) What is the purpose of installing roll-preloading device? How does it work? 03
(b) Write a brief note on roll-heating/cooling devices for calender. 04
(c) Explain in detail about different types of roll configurations for calender. 07
OR
Q.4 (a) Which major requirements should be fulfilled by calender rolls? 03
(b) Describe the construction and working of roll cross-axis device. 04
(c) Write a short note on roll bearings. 07
Q.5 (a) Give the detailed description for the mechanical press having following
designation:
S V A 2 ? 1000 + 600 ? 1800 x 1600
03
(b) Which law is responsible for the working mechanism of hydraulic press?
Describe in brief about the same.
04
(c) Explain in detail about any four ram driving mechanism with diagram. 07
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI(NEW) ? EXAMINATION ? SUMMER 2019
Subject Code:2162603 Date:16/05/2019
Subject Name:Rubber Equipment Design-I
Time:10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) List the factors on which batch size of mixing mill depends. 03
(b) Justify the statement that ?Roll speed tends to decrease with increase in roll
diameter.?
04
(c) State the importance of cross mixing. Short note on ?cross mixing devices?. 07
Q.2 (a) Write about the jacket for high pressure vessels. 03
(b) Describe the ?Shrink-fit? and ?Autofrettage? type of constructions for high
pressure vessels.
04
(c) Explain the Bridgeman closure and Delta-ring closure in detail. 07
OR
(c) Discuss about the Uhde-Bredtschneider closure and Double-cone seal ring
closure with appropriate diagram.
07
Q.3 (a) What are the probable causes and possible solutions when stock temperature
rises too quickly in internal mixer?
03
(b) Write the advantages and disadvantages of internal mixer. 04
(c) Write the importance of rotor shaft seals used in internal mixer. Discuss the
different designs of the same.
07
OR
Q.3 (a) Compare the drop door and old type sliding door used as discharge door for
internal mixer.
03
(b) Describe in detail about ZZ2 geometry for internal mixer. 04
(c) Explain in detail about heat transfer in internal mixer. 07
Q.4 (a) What is the purpose of installing roll-preloading device? How does it work? 03
(b) Write a brief note on roll-heating/cooling devices for calender. 04
(c) Explain in detail about different types of roll configurations for calender. 07
OR
Q.4 (a) Which major requirements should be fulfilled by calender rolls? 03
(b) Describe the construction and working of roll cross-axis device. 04
(c) Write a short note on roll bearings. 07
Q.5 (a) Give the detailed description for the mechanical press having following
designation:
S V A 2 ? 1000 + 600 ? 1800 x 1600
03
(b) Which law is responsible for the working mechanism of hydraulic press?
Describe in brief about the same.
04
(c) Explain in detail about any four ram driving mechanism with diagram. 07
2
OR
Q.5 (a) Write in brief about gap frame press. 03
(b) Which points should be taken into consideration while selecting a press? 04
(c) A Hydraulic press has a ram of 12 cm diameter & plunger of 1.5 cm diameter.
Determine the load lifted if a force of 294.3 N is applied to the plunger. If the
plunger has a stroke of 20 cm, how many strokes will be required to lift weight
by 0.50 m? Also calculate the volume of additional liquid required & the power
of motor driving the plunger if the time taken by the press is 15 minutes.
07
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This post was last modified on 20 February 2020