Download GTU B.Tech 2020 Winter 5th Sem 3152308 Plastics Testing Ii Question Paper

Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 5th Sem 3152308 Plastics Testing Ii Previous Question Paper

Seat No.: ________
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?V (NEW) EXAMINATION ? WINTER 2020
Subject Code:3152308 Date:29/01/2021
Subject Name:Plastics Testing-II
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.


MARKS
Q.1 (a) Explain GPC technique with diagram.
03



(b) Define definition and equipment arrangement of VSP.
04

(c) What is HDT, derive the equation and diagram.
07


Q.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

(b) Give the name and explanation of testing procedure used to
04
measure the percentage of oxygen present to support
combustion of plastic.

(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
07
vapor permeability and derive procedure.
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
07
the samples.



Q.6 (a) Give any three uses of DSC.
03

(b) What is immersion test?
04

(c) Explain use Brookfield Viscometer and factor affecting.
07






Q.7 (a) Derive chemical test to identify Nylon.
03
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(b) Define-
04
(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.

(c) Explain application of DSC with its mechanical
07
arrangement.



Q.8 (a) Give two names of inert gas and its importance.
03
(b) What is V-0,V-1 and V-2 in vertical burning.
04
(c) Explain accelerated weathering using fluorescent UV.
07

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