Materials Engineering (KME-303) - AKTU Question Paper 2021-22
B.Tech · Semester 3 · Free PDF Download
This is the official AKTU Materials Engineering Previous Year Question Paper for B.Tech Semester 3, 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 3
Session:2021-22
University:AKTU / UPTU
Rate this paper
Questions Asked in 2021-22
Materials Engineering (KME-303) — complete question paper
Section AAttempt all q u e s t i o n s i n b r i e f . 2 x 10 = 20
- aDefine unit cell in a c rystal structure. 2 1
- bDifferentiate between duct ility and malleability. 2 2
- cExplain Stress intensity factor. 2 2
- dDraw the plane having miller indices (011) and (001). 2 1
- eExplain Gibbs Phase rule. 2 3
- fDiscuss the use of Phase diagram. 2 3
- gDefine critical cooling rate. 2 4
- hExplain why tempering is re quired after hardening. 2 4 i. Differentiate between brass and bronze. 2 5 j. Describe super alloy and gi ve its one example. 2 5
Section BAttempt any three o f t h e f o l l o w i n g : 3 x 10 = 30
- aClassify the defect in crystal and explain point defect in d etail with neat sketch
- bDiscuss following theor ies of failure in brief: (1) Maximum principal stress theory (2) Maximum shear stress Theory (3) Maximum distortion energy theory
- cDifferentiate between alloy and solid solution. Also explain t h e H u m e - Ruthery rule for solid solubility in solid solution
- dExplain the heat treatment and its objective. Also discuss t he full annealing, normalizing and hardening process with help of Fe-C diagram
- eDescribe cast iron and discuss composition and application o f Grey cast iron, malleable cast iron, white cast iron and spheroidal cast iron
Section CAttempt any one p a r t o f t h e f o l l o w i n g : 1 x 10 = 10
- aDiscuss the stress strain curve for steel and explain why st eel is having two yield points. Also establish relation between the true stre ss and engineering stress
- bA component having length of 1m was loaded beyond elastic li mit. At a point when its length increased by 3mm. It was experiencing stress of 250MPa. If the young’s modulus of the material is 200GPa.What w ill be the final dimension of the component after unloading
- aExplain Griffith theory for br ittle fracture and formulate t he expression for critical crack size
- bDiscuss the fatigue failure and method of developing S-N cur ve for steel using RR Moore test
- aDraw and explain the iron carbon diagram and show all invari ant reaction and phases in it
- bIn lead tin system the eutectic reaction take place at a tem perature 183oC at 61.9% tin. T eutectic temperature the solubility of tin in α phase is 19.2% and solubility of tin in β phase is 97.5%. The melting point of lead and tin is 327 oC and 232 oC respectively. The solubility of tin in α phase at room temperature is zero and solubility of lead in β phase at room temperature is zero. Draw the Phase diagram and determine fraction of α and β phase at eutectic point
- aExplain surface hardening of steel. Discuss any two method o f surface hardening with neat sketch
- bExplain the method of developing TTT curve. Draw the TTT dia gram for eutectic steel and show transformation of austenite to perl ite, bainite and martensite
- aDiscuss the need of alloying of steel and also discuss the e ffect of different alloying element on properties of steel
- bDiscuss the composition and a pplication of following alloys (i)Monel Metal (ii) Muntz Metal (iii) Gun metal (iv) Duralumin (v) Y-alloy
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.
Materials Engineering — Other Year Papers
AKTU Materials Engineering PYQs from other sessions
More B.Tech Semester 3 (2021-22) Papers
Other subjects from same semester and session
Python Programming2021-22Energy Science And Engineering2021-22Mathemativs Iv2021-22Data Structure2021-22Computer Organization And Architecture2021-22Computer System Security2021-22Thermodynamics2021-22Introduction To Soft Computing2021-22
View all B.Tech Semester 3 2021-22 papers →Syllabus & More PYQs
Paper solve karne se pehle unit-wise syllabus dekh lo