Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 3rd Sem New 2132303 Basic Of Plastic Material Testing Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?III (New) EXAMINATION ? WINTER 2018
Subject Code: 2132303 Date: 05/12/2018
Subject Name: Basic of Plastic Material Testing
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) Define specification. What is the purpose of specification? 03
(b) Define Testing. List reasons for Testing. 04
(c) Explain the Tensile strength Test for plastics material in
detail.
07
Q.2 (a) Give full form of ASTM,I.S.O and S.P.I 03
(b) (1) List the material characterization tests.
(2) Give any two examples of self extinguishing plastics
material.
(3) Draw the test specimen with dimensions for tensile
testing as per ASTM D 638.
(4) MFI test is used to measure flow behavior of
Thermosets.(True/False)
04
(c) Explain Stress-Strain curve in detail. 07
OR
(c) List the specimen preparation techniques for
thermoplastic. Explain about Injection Molding in detail.
07
Q.3 (a) Define conditioning. List purpose of conditioning. 03
(b) What is Hygroscopic material? Give the name of Plastic
materials which are Hygroscopic.
04
(c) Explain the test method to determine Density of plastic
material in detail.
07
OR
Q.3 (a) Explain standard Test method to determine Water
Absorption of Plastics.
03
(b) List types of Impact tests. 04
(c) Define (1) Yield strength (2) Modulus of elasticity (3) Stress
(4) Yield Point (5) strain (6) Elongation (7) Toughness
07
Q.4 (a) List the preliminary tests carried out for the simple
identification of plastics.
03
(b) Width and thickness of tensile test specimen is 8mm and
3mm respectively. If tensile strength at break is 384
kg/cm
2
. Calculate the load recorded at break.
04
(c) List the specimen preparation techniques for thermosets.
Explain any one in detail.
07
OR
Q.4 (a) Explain copper wire test for halogens. 03
(b) Explain in brief about chemical confirmation test for
polyolefins and caprolactum.
04
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?III (New) EXAMINATION ? WINTER 2018
Subject Code: 2132303 Date: 05/12/2018
Subject Name: Basic of Plastic Material Testing
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) Define specification. What is the purpose of specification? 03
(b) Define Testing. List reasons for Testing. 04
(c) Explain the Tensile strength Test for plastics material in
detail.
07
Q.2 (a) Give full form of ASTM,I.S.O and S.P.I 03
(b) (1) List the material characterization tests.
(2) Give any two examples of self extinguishing plastics
material.
(3) Draw the test specimen with dimensions for tensile
testing as per ASTM D 638.
(4) MFI test is used to measure flow behavior of
Thermosets.(True/False)
04
(c) Explain Stress-Strain curve in detail. 07
OR
(c) List the specimen preparation techniques for
thermoplastic. Explain about Injection Molding in detail.
07
Q.3 (a) Define conditioning. List purpose of conditioning. 03
(b) What is Hygroscopic material? Give the name of Plastic
materials which are Hygroscopic.
04
(c) Explain the test method to determine Density of plastic
material in detail.
07
OR
Q.3 (a) Explain standard Test method to determine Water
Absorption of Plastics.
03
(b) List types of Impact tests. 04
(c) Define (1) Yield strength (2) Modulus of elasticity (3) Stress
(4) Yield Point (5) strain (6) Elongation (7) Toughness
07
Q.4 (a) List the preliminary tests carried out for the simple
identification of plastics.
03
(b) Width and thickness of tensile test specimen is 8mm and
3mm respectively. If tensile strength at break is 384
kg/cm
2
. Calculate the load recorded at break.
04
(c) List the specimen preparation techniques for thermosets.
Explain any one in detail.
07
OR
Q.4 (a) Explain copper wire test for halogens. 03
(b) Explain in brief about chemical confirmation test for
polyolefins and caprolactum.
04
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2
(c) Explain the factors affecting the Impact strength. 07
Q.5 (a) (1) What is Standard Laboratory Atmosphere?
(2) Cup flow test and Spiral flow test is used to measure
flow Behavior of Thermosets.(True/False)
(3) ______________ plastic material produced metallic
sound when dropped on hard surface. (a) PS (b) FPVC (c)
Polyamides
03
(b) Define Flexural strength. List and explain the factors
affecting the test result.
04
(c) Define Melt flow index. Explain the test to determine melt
flow behavior of plastic material in detail with factors
affecting the test results.
07
OR
Q.5 (a) Calculate compressive strength of the specimen having
Height 2.5 cm ,Length 1.4 cm and Width 1.4 cm.Load
recorded at crushing is 525 kg.
03
(b) Short note: Abrasion resistance test 04
(c) Define Hardness. Explain Rockwell hardness test in
detail.
07
*************
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This post was last modified on 20 February 2020