GTU BE 2019 Summer Question Papers || Gujarat Technological University
Subject Code: 2162307
GUJARAT TECHNOLOGICAL UNIVERSITY
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SEMESTER-VI(NEW) — EXAMINATION — SUMMER 2019
Subject Name: Testing and Identification of Plastic Materials
Time: 10:30 AM TO 01:00 PM
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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| Q.No. | Question | Marks |
|---|---|---|
| Q.1 (a) | What is Testing? What is the purpose of testing? | 03 |
| Q.1 (b) | What are long term and short term properties? | 04 |
| Q.1 (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 |
| Q.2 (b) | What is Creep? | 04 |
| Q.2 (c) | Discuss MFI test in detail. OR Discuss Izod Impact and Charpy impact tests. | 07 |
| Q.3 (a) | What is HDT? | 03 |
| Q.3 (b) | Discuss Cup flow test. | 04 |
| Q.3 (c) | Discuss Dielectric strength test --- Content provided by FirstRanker.com --- ORWhat is a density gradient column? | 07 |
| Q.4 (a) | What is modulus of Elasticity? What is its practical significance. | 03 |
| Q.4 (b) | Discuss ESCR test. | 04 |
| Q.4 (c) | Define : Flexural strength, MFI, Shear stress | 07 |
| Q.5 (a) | Discuss HDT test | 03 |
| Q.5 (b) | What are optical properties? Discuss test to check haze OR What is BDV? | 04 |
| Q.5 (c) | Discuss flammability test | 07 |
| Q.6 (a) | Discuss test for Dielectric constant. | 03 |
| Q.6 (b) | Discuss identification tests | 04 |
| Q.6 (c) | What is the importance of long term tests? | 07 |
| Q.7 (a) | Discuss advantages and disadvantages of testing OR --- Content provided by FirstRanker.com --- Discuss solubility tests | 03 |
| Q.7 (b) | Discuss tests to work out molecular weight of plastics | 04 |
| Q.7 (c) | Discuss DSC test and state its importance | 07 |
Date: 14/05/2019
Total Marks: 70
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