Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 3rd Sem Old 131904 Material Science And Metallurgy Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?III (OLD) EXAMINATION ? WINTER 2018
Subject Code:131904 Date:05/12/2018
Subject Name:Material Science And Metallurgy
Time:10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Define (i) Creep, (ii) Malleability (iii) Hardness (iv) Resilience (v) Ductility (vi)
Toughness (vii) Plasticity
07
(b) Explain Ultrasonic testing with advantages and limitations 07
Q.2 (a) Explain any two methods for production of metal powders. 07
(b) What is solid solution? Explain types of solid solution and significance of Hume
Rothery?s Rules
07
OR
(b) State composition and specific applications of (i) Muntz metal (ii) German silver
(iii) Naval brass
07
Q.3 (a) Define Heat Treatment. Explain the importance of TTT diagram in heat treatment 07
(b) What is Gibb?s phase rule? Define system, phase and degree of freedom. Show
that the degree of freedom at eutectic point in a binary phase diagram is zero.
07
OR
Q.3 (a) What is case hardening processes and explain any one in detail 07
(b) Differentiate between gray cast iron & spheroidal cast iron in terms of
microstructure, properties, composition & applications
07
Q.4 (a) Discuss the cathodic protection method of corrosion prevention for underground
pipelines
07
(b) With Neat Sketch Draw Iron-Carbon (Fe-C) Equilibrium Diagram &Explain
briefly various micro constituents of the diagram.
07
OR
Q.4 (a) What is phase diagram? Explain Lever rule based on phase diagram 07
(b) Explain the effects on steel by alloying elements (i)Silicon (ii) Sulphur, (iii)
Magnesium and (iv) Phosphorous.
07
Q.5 (a) Describe with neat sketch how would a Jominy hardenability test on a steel
sample is being conducted.
07
(b) Define unit cell. Explain with neat sketches the arrangement of atoms in B.C.C,
F.C.C. and H.C.P. lattice. Prove that a F.C.C. structure is always more close
packed than B.C.C. structure.
07
OR
Q.5 (a) Explain the process of flame hardening with neat sketch 07
(b) Classify different types of cast iron. Why silicon is added to cast iron? Explain
the effects of any four alloying elements on the properties of cast iron.
07
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This post was last modified on 20 February 2020