Download GTU BE/B.Tech 2019 Winter 3rd Sem New 3133906 Material Science Question Paper

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Seat No.:

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Enrolment No.:
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- III (New) EXAMINATION — WINTER 2019
Subject Code: 3133906
Subject Name: Material Science

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Time: 02:30 PM TO 05:00 PM
Date: 12/5/2019
Total Marks: 70
Instructions:
1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

1. Q.1
   1. Define miller indices. (03 Marks)
   2. Explain reciprocal lattice vector in short. (04 Marks)
   3. Explain Bragg's law with ray diagram and derive its equations. (07 Marks)

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   OR
   1. Define crystal and crystal plane. (03 Marks)
   2. Write feature of miller indices. (04 Marks)
   3. Explain in brief Fundamental types of lattice. (07 Marks)
2. 1. Define indexing system for crystal plan. (03 Marks)

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   2. Define primitive lattice. (04 Marks)
   3. Explain in short defect in solid. (07 Marks)
   OR
   1. Draw ray diagram and explain Diffraction condition. (03 Marks)
   2. Draw 111, 101, 110 cubic structure lattice pattern. (04 Marks)
   3. Write Atoms per unit cell, Co-ordinations number and atomic packing fraction of sc, bcc, hcp and fcc crystal structure. (07 Marks)

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3. 1. Explain lattice translation vector in brief. (03 Marks)
   2. Explain magnetic properties of material. (04 Marks)
   3. Define Heat capacity of the electron gas in short. (07 Marks)
   OR
   1. Explain in brief Electron Motion in magnetic field. (03 Marks)

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   2. Define the term cohesive energy and hydrogen bond. (04 Marks)
   3. Write short notes on Scattered wave amplitude. (07 Marks)
4. 1. Derive the lue equation systematically. (03 Marks)
   2. Define covalent crystal. (04 Marks)

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   3. Explain broadly Energy Levels in One dimension. (07 Marks)
   OR
   1. States and explain ohms law and define the parameter Electrical conductivity, electrical resistivity of metal. (03 Marks)
   2. Define ionic crystal. (04 Marks)
   3. Define the Effect of temperature on Fermi Dirac distribution. (07 Marks)

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5. 1. Explain Free electron in three dimensions. (07 Marks)