B.TechSemester 42021-22Material ScienceKOE042

Material Science (KOE042) - AKTU Question Paper 2021-22

B.Tech · Semester 4 · Free PDF Download

This is the official AKTU Material Science Previous Year Question Paper for B.Tech Semester 4, academic session 2021-22. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.

Course:B.Tech

Semester:Semester 4

Session:2021-22

University:AKTU / UPTU

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Questions Asked in 2021-22

Material Science (KOE042) — complete question paper

Section AAttempt all q u e s t i o n s i n b r i e f . 2x10 = 20

a
State Lever Rule and exp lain its significance? 1
b
Explain why solubility of Car bon in Austenite is more than ferrite? 1
c
Explain Sherardizing Annealing? 2
d
State the difference between TTT Diagram and CCT Diagram fo r any composition of steel?
e
Distinguish between low, me dium and high carbon steels? 3
f
Write the composition of H igh-Speed Steel (HSS)? 3
g
Define the terms: Annealing and Normalizing. 4
h
Write different types of ste el and their carbon percentage 4 (i) What is superconductivity? Give suitable example 5 (j) What do you understand by composite material? 5

Section BAttempt any three o f t h e f o l l o w i n g : 10x3 = 30

a
Draw a neat sketch of iron carbon equilibrium diagram and b riefly explain it
b
Draw and explain Time-Temper ature-Transformation (TTT) curve. 2
c
Explain the phenomenon of yielding and yield strength and a lso state the σ- ϵ diagram for a ductile and brittle material respectively
d
What is the importance of m aterial in engineering? Explain it with suitable example
e
What are the properties a nd applications of ceramics?

Section CAttempt any one p a r t o f t h e f o l l o w i n g : 10x1 = 10

a
What are the four Hume Rothery rules for solid solutions? E xplain with example
b
Explain etching and why it i s necessary before microscopic study. Name some of them?
a
Sketch Pb-Sn Phase diagram with all its salient points. 2 Explain Austempering and martempering process with suitable sketch. 2
a
Explain Strain Hardening. Sketch Stress – Strain Curve for mild steel and elaborate all points with explanation
b
Explain Hardness? Explain Rockwell, Brinell and Vickers’s Hardness Testing with diagram?
a
Differentiate between conductors, semi-conductors and insulator s
b
a s e d o n t h e e n e r g y b a n d c o n c e p t . H o w d o e s t h e c o n d u c t i v i t y of semi-conductors increase by doping?
b
Explain the domain theory of magnetism. Also explain ferromagnetism, anti-ferromagnetism and ferrimagnetism
a
Write short note on composite materials. Give a detailed c lassification of composite materials along with their properties and applications
b
What is BH curve and hysteresis loop? Explain with neat sketch. 5

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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