Download PTU B-Tech ME 2020 Dec 3rd Sem 59116 Engineering Materials And Metallurgy Question Paper

Download PTU (I.K.Gujral Punjab Technical University (IKGPTU)) B-Tech (Bachelor of Technology) Mechanical Engineering 2020 December 3rd Sem 59116 Engineering Materials And Metallurgy Previous Question Paper

Roll No.
Total No. of Pages : 02
Total No. of Questions : 09
B.Tech. (Mechanical Engineering) (2012 Onwards)/
(Marine Engg.)(2013 Onwards) (Sem.?3)
ENGINEERING MATERIALS AND METALLURGY
Subject Code : BTME-306
M.Code : 59116
Time : 3 Hrs. Max. Marks : 60
INST RUCT IONS T O CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
SECTION-A
1.
Write briefly :
a. Define Space Lattice?
b. Draw (111) plane in a BCC unit cell.
c. Why iron is said to be allotropic?
d. Differentiate between vacancy and interstitial defects.
e. Define Fick's first law of diffusion.
f. List any two applications of phase diagram.
g. What are the limitations of TTT diagram?
h. What do you mean by decarburization?
i. What are Ferrite Stabilizers?
j. List any four purpose of adding alloying elements to steels.
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SECTION-B
2.
Write a brief note on various point defects (imperfections) in crystalline materials.
3.
Distinguish between the term `Recovery' and the `Recrystallization' involved in the
process of heating cold-worked metals.
4.
What is lever rule? Explain its application to binary isomorphous system.
5.
Using suitable portion of Fe-C equilibrium diagram, explain the significance of critical
temperature lines.
6.
Define Hardenability of steel. On what factors does it depend?
SECTION-C
7.
Discuss the construction of TTT diagram for eutectoid steels? In what way it is different
from continuous cooling transformation (CCT) diagram?
8.
What is the need of alloying in steels? Discuss the effect of various alloying elements on
iron-iron carbide diagram.
9.
Write brief notes on the following :
a) Induction hardening
b) Steady state vs. Non-steady state diffusion
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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