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) — extracted question text · 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. Check the original PDF for equations, diagrams and complete wording. Extracted: 2026-08-23.

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