STUPIDSID
1 (a)
Explain the crystal imperfections with a neat sketch.
6 M
1 (b)
Define diffusion. What are the factors affecting diffusion?
8 M
1 (c)
Copper has F.C.C. structure and an atomic radius of 1.278°A. Calculate its density. Given mol. Wt=63.54 g/mole.
6 M
2 (a)
Define the following ;
i)Toughness; ii) Yield stress; iii)Proportional limit; iv) Resilience.
i)Toughness; ii) Yield stress; iii)Proportional limit; iv) Resilience.
8 M
2 (b)
derive an expression for critical resolved shear stress in a crystal structure.
8 M
2 (c)
Calculate the resolved shear stress of limit cell in a nickel if a tensile stress of 13.7 Mpa is applied. Given that angle between the axial force and slip direction is 45° and angle between axial force and normal to slip plane is 54°.
4 M
3 (a)
Derive an expression for homogeneous nucleation with a suitable graph.
10 M
3 (b)
Explain the following with a suitable sketches:
i)Substitutional solid solution.
ii) Interstitial solid solution.
i)Substitutional solid solution.
ii) Interstitial solid solution.
10 M
4 (a)
What are the factor affecting the fatigue life?
6 M
4 (b)
Write a short note on the following : i) Ductile fracture , ii) Brittle fracture
8 M
4 (c)
Draw a creep curve and explain its various stages.
6 M
5 (a)
Explain the classification of cast irons in detail.
10 M
5 (b)
Why is iron carbide diagram drawn until 6.67% carbon?
6 M
5 (c)
Define Martensite, Cemantite, Austenite and ferrite.
4 M
6 (a)
What are the objectives of heat treatment?
6 M
6 (b)
Explain with a neat sketch of Jominy and quench test method.
8 M
6 (c)
Explain inductive hardening with a neat sketch.
6 M
7 (a)
What is merit by S.G. iron> Explain the structure composition and properties of S.G. iron.
6 M
7 (b)
What are the factors affecting micro structure of cast iron? Explain.
8 M
7 (c)
Explain the classification of engineering materials.
6 M
8 (a)
Explain the classification of composite materials.
8 M
8 (b)
What do you mean by ceramic matrix composites?
6 M
8 (c)
List the advantages and disadvantages of composite materials.
6 M
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