MATERIAL SCIENCE AND ENGINEERING (PAPER 1) BY SURESH KUMAR .....sureshkumarthegreat@yahoo.com

                                                EC-207
                               Material Science and Engineering
                                  (B.Tech 3rd Semester, 2122)
Time : 3 Hours                                                                                  Maximum Marks : 60
NOTE:- This paper consist of Three Sections. Section A is compulsory. Do any Four questions from
                 Section B and any two questions from Section C

                                   Section-A                                       Marks : 2 Each

1(a) What are Miller Indeces in a Crystal System?
(b) State the advantages of non-ferrous materials and alloys.
(c) Write a short note on brittle to ductile transition.
(d) Discuss about CeramicThermal Insulations.
(e) What are the reqirements of materials of high conductivity?
(f) Identify diffrence between ferroelectric and ferromagnetic materials.
(g) State few factors which determine the mechanical behaviours of polymers.
(h) Write short note on 'Storage of Cement'.
(i) BaTiO3 is ferroelectric below 120 C but it is not ferroelectrical below this temp. Explain whay the change occurs.
(j) How will you classify 'Referectories'?

                                            Section-B                                       Marks:5 Each

2. (a) What is the classifiaction of Engg. materials based on their physical properties and applications?
    (b) What do you understand by close packing in crystals? Explain briefly and obtain atomic packing fractions in
        F.C.C. and B.C.C. crystals.
3. (a) What is a phase ? How do you obtain a phase diagram for an unknown ststem using cooling curves ?
    (b) What is Gibbs phase rule ? Explin each term in brief.
4. What do you understand by crystal imperfections in materials? Explain them in detail.
5. What are ceramic Materials? State some important ceramic materials with their properties and applications.
    Also compare between ceramic and non- ceramic phases.
6. Discuss about the dielectric materials, dielectrical constant, break-down voltages and dielectric losses.

                                             Section-C                                      Marks : 10 Each

7. What do you understand by Electro-optic effect in materials ? Discuss briefly about Kerreffect and Pockels Effevt.
8. What are the important building materials? discuss in detail sabout the classificationb, comosition and qualities of
    good brics.
9. Write short notes on any four of the following :
    (a) Ferroelectric Materials
    (b) Reinforced plastics
    (c) Soft and hard Magnetic Materials
    (d) Solid solutions
    (e) Magnetic Anistropy

MATERIAL SCIENCE AND ENGINEERING

PAPER NO.1

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