GUJARAT TECHNOLOGICAL UNIVERSITY
SEMESTER-IV(NEW) — EXAMINATION - SUMMER 2019
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Subject Code:2143903 Date:17/05/2019
Subject Name: Elements of Material Science
Time:02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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MARKS
Q.1 (a) Define: Thermal Shock 03
(b) Explain: Elastic deformation 04
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(c) Explain CMR with its applications 07
Q.2 (a) Give few example of Ferro electrical material with its applications. 03
(b) Explain Plastic deformation. 04
(c) Explain GMR with its applications. 07
OR
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(c) Explain doping effect on structural and mechanical properties of steel. 07
Q.3 (a) Write name of four legs of structure, properties, and performance of materials. 03
(b) Define: Dielectric Dispersion, Dielectric Loss 04
(c) Write a short note of thermal conductivity 07
OR
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Q.3 (a) What is true stress 03
(b) Draw the various composite associated with metal matrix + metal 04
(c) Write down various application associated with Piezoelectric Materials. 07
Q.4 (a) Define :Absorption of light 03
(b) Describe various applications associated with OLED. 04
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(c) Write sort note on organiclight-emitting diode. 07
OR
Q.4 (a) What do mean by Luminescence 03
(b) Differentiate : ferromagnetism and ferrimagnetism 04
(c) Write-down various applications associated with superconductivity. 07
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Q.5 (a) Define: Ferrites 03
(b) Differentiate : Reflection and refraction 04
(c) Write a short note on Photoconductivity 07
OR
Q.5 (a) What do you mean by Composite Material? 03
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(b) Differentiate: Magnetization and Magnetic permeability 04
(c) Write a short note of Biocompatibility and materials associated with it. 07
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