GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER-V (NEW) EXAMINATION - WINTER 2020
--- Content provided by FirstRanker.com ---
Subject Code:3152308 Date:29/01/2021Subject Name:Plastics Testing-II
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
- Attempt any FOUR questions out of EIGHT questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
--- Content provided by FirstRanker.com ---
MARKS
Q.1 (a) Explain GPC technique with diagram. 03
(b) Define definition and equipment arrangement of VSP. 04
--- Content provided by FirstRanker.com ---
(c) What is HDT, derive the equation and diagram. 07Q.2 (a) Give three names of test to study electrical properties. 03
(b) What is Arc Resistance and derive its significance. 04
(c) Explain Di-electric Strength and its test procedure. 07
Q.3 (a) Explain flame test to identify PVC. 03
--- Content provided by FirstRanker.com ---
(b) Give the name and explanation of testing procedure used to measure the percentage of oxygen present to support combustion of plastic. 04(c) Explain UL94 flammability and its test procedure 07
Q.4 (a) Explain solvent stress cracking resistance. 03
(b) Derive luminous transmittance and haze. 04
(c) Give the name of the instrument used to measure water vapor permeability and derive procedure. 07
--- Content provided by FirstRanker.com ---
Q.5 (a) What is the importance to check weathering properties? 03
(b) Give definition of surface and volume resistivity 04
(c) Give full form of DMA and draw different fixtures to hold the samples. 07
Q.6 (a) Give any three uses of DSC. 03
(b) What is immersion test? 04
--- Content provided by FirstRanker.com ---
(c) Explain use Brookfield Viscometer and factor affecting. 07Q.7 (a) Derive chemical test to identify Nylon. 03
(b) (i) Name of the gas used to nullify moisture in TGA. (ii) What is melting point of HDPE. (iii) Give sample size of tensile sample used in DMA. (iv) Give full form of ASTMD. 04
(c) Explain application of DSC with its mechanical arrangement. 07
Q.8 (a) Give two names of inert gas and its importance. 03
--- Content provided by FirstRanker.com ---
(b) What is V-0,V-1 and V-2 in vertical burning. 04(c) Explain accelerated weathering using fluorescent UV. 07
--- Content provided by FirstRanker.com ---
This download link is referred from the post: GTU B.Tech 2020 Winter Question Papers || Gujarat Technological University