Dr. A.P.J. Abdul Kalam University BE IV SEM (CS/IT) Material Science [ES220T] June 2021 Question Paper

Dr. A.P.J. Abdul Kalam University

Bachelor of Engineering

Fourth Semester Main Examination, June-2021

Material Science [ES220T]

Branch: CS/IT

Time: 3:00 Hrs Max Marks 70

Note : 1. Attempt any five questions out of eight.

2. All question carry equal marks.

Q.1 (a) What do you mean by dipolar relaxation?

(b) Explain magnetic resonance in details.

Q.2 (a) Explain Bragg's Law in details.

(b) Write short note on Linde's rule and Joule's rule.

Q.3 (a) What do you mean by atomic structure? Also explain molecules

and general bonding principles.

(b) Explain spin magnetic moment in details.

Q.4 (a) Write a short note on orbital magnetic dipole movement and

angular momentum of simple atomic model.

(b) What is Curie-Weiss law? also explain spontaneous magnetization.

Q.5 (a) Explain high conductivity and high resistivity material.

(b) Explain atomic interpretation of Ohm's law of conductor

Q.6 (a) Explain n-type and p-type semiconductor in details.

(b) What do you mean by semiconductors? Explain chemical bonds in

Ge and Si.

Q.7 (a) What is photoconductivity and photo electronic cells?

(b) Explain conductors and also Write properties of superconductor.

Q.8 Write short note on :

(i) Bravais lattice (ii) Composite material.

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