B.TechSemester 32024-25Material ScienceBOE303

Material Science (BOE303) - AKTU Question Paper 2024-25

B.Tech · Semester 3 · Free PDF Download

This is the official AKTU Material Science Previous Year Question Paper for B.Tech Semester 3, academic session 2024-25. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.

Course:B.Tech

Semester:Semester 3

Session:2024-25

University:AKTU / UPTU

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Questions Asked in 2024-25

Material Science (BOE303) — complete question paper · 70 marks · 3 Hours

Section AAttempt all questions in brief. 2 x 07 = 14

a
What is the signifi cance of phase rule?
b
What is Hume-Rothery’s rules?
c
Define atomic diffusion
d
Differences between eutecto id, hypo, and hypereutectoid steels
e
What are the different stages in the creep curve?
f
What is the Meissner effect?
g
What are shape memory alloys?

Section BAttempt any three of the following: 07 x 3 = 21

a
Sodium chloride crystal of FCC structure has a density of 2.18 gm/cm3. Calculate the distance between two adjacent atoms in it
b
What are Fick's laws of diffusion? How does the diffusion process influence the phase transformations in ferrous alloys?
c
Write short notes on the following: i. Fatigue failure ii. Endurance limit
d
What is ferromagnetism, and wh at distinguishes it from other types of magnetism?
e
Explain the melt spinning process used in the fabrication of metallic glasses. What are the applications of metallic glasses in industry?

Section CAttempt any one part of the following: 07 x 1 = 07

a
Explain Gibb's phase rule. How do the unary, binary, and ternary phase diagrams differ from each other? Explain with suitable diagram
b
Describe the microstructural changes that occur during cooli ng in binary systems, particularly in the context of phase diagrams
a
Draw the iron-carbon equilibrium diagram and show their sali ent features. Indicate significance of this diagram for heat treatm ent of steel
b
Sketch and explain the TTT diag ram for a eutectoid steel. De pict important transformations taking place in it during cooling
a
Explain stress-strain diagrams and differentiate between duc tile and brittle behavior of materials based on their stress-strain curves
b
What are dislocations? How do different types of dislocations affect the mechanical properties of materials?
a
Explain dielectric breakdown a nd its significance in the ins ulation properties of materials
b
Discuss the Langevin-Debye e quation and its significance in describing the behavior of polar dielectric materials
a
What are the key properties of carbon nanotubes that make th em suitable for use in advanced materials and technologies?
b
What is the bottom-up and top- down approaches for the preparation of nanomaterials? Explain in brief

Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.

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