Friday, January 28, 2022

Dr.A.P.J.Abdul Kalam University BE LATERAL III SEM BRANCH - ME Material Science [ES-220] Dec - 2020 Question Paper

Dr.A.P.J.Abdul Kalam University

Bachelor of Engineering

Third Semester Main Examination, Dec-2020

Material Science [ES-220]

Branch-ME

Time: 3:00 Hrs Max Marks 70

Note: (i) Attempt any five questions. All question carry equal marks.

(ii) Answer should be precise & to be point only.

(iii) Assume suitable data if necessary & state them clearly

Q.1 Differentiate metals and nonmetals in terms of their properties and uses?

Q.2 What is atomic packing factor? Calculate the atomic packing factor of simple cubic, BCC and FCC crystal.

Q.3 Explain the concepts of lattice, basis and crystal structure? How are they related?

Q.4 What are defects? Discuss point and line defects in crystal with neat sketch.

Q.5 Define cold working and outline the change of properties due to cold working. Enlist its advantages and disadvantages of cold working?

Q.6 Describe the working of Iron carbon diagram with its advantages and limitations?

Q.7 Explain the following heat treatment process:-

(i) Normalizing

(ii) Annealing

(iii) Spherodizing

(iii) Tempering

Q.8 Discuss about the toxic and oxidizer materials also explain their classification and hazards?

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