Download GTU BE/B.Tech 2019 Summer 6th Sem New 2162307 Testing And Identification Of Plastic Materials Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 6th Sem New 2162307 Testing And Identification Of Plastic Materials Previous Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI(NEW) ? EXAMINATION ? SUMMER 2019
Subject Code:2162307 Date:14/05/2019
Subject Name:Testing and Identification of Plastic Materials
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.



MARKS

Q.1 (a) What is Testing? What is the purpose of testing? 03
(b) What are long term and short term properties? 04
(c) Discuss in detail, tensile testing of Plastic Materials 07

Q.2 (a) A plastic film needs to be identified. What are the tests you will perform? 03
(b) What is Creep? 04
(c) Discuss MFI test in detail. 07
OR
(c) Discuss Izod Impact and Charpy impact tests. 07
Q.3 (a) What is HDT? 03
(b) Discuss Cup flow test. 04
(c) Discuss Dielectric strength test 07
OR
Q.3 (a) What is a density gradient column? 03
(b) What is modulus of Elasticity? What is its practical significance. 04
(c) Discuss ESCR test. 07
Q.4 (a) Define : Flexural strength, MFI, Shear stress 03
(b) Discuss HDT test 04
(c) What are optical properties? Discuss test to check haze 07
OR
Q.4 (a) What is BDV? 03
(b) Discuss flammability test 04
(c) Discuss test for Dielectric constant. 07
Q.5 (a) Discuss identification tests 03
(b) What is the importance of long term tests? 04
(c) Discuss advantages and disadvantages of testing 07
OR

Q.5 (a) Discuss solubility tests 03
(b) Discuss tests to work out molecular weight of plastics 04
(c) Discuss DSC test and state its importance 07

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