STUPIDSID
1(a)
Define APF. With a neat sketch obtain an expression for density packing factor of HCP structure.
8 M
1(b)
Give brief classification of crystal defects. Explain them briefly.
6 M
1(c)
List the factors affecting diffusion. Explain them briefly.
6 M
2(a)
Define engineering stress and strain and true stress and true strain. Establish the relationship between true strain and engineering strain.
7 M
2(b)
List and explain the mechanical properties in elastic and plastic region.
7 M
2(c)
Define CRSS? Obtain the expression for the same.
6 M
3(a)
Explain: i) Cup and cone fracture ii) Ductile to Brittle transition.
8 M
3(b)
What are the different fatigue protection methods? Explain briefly.
6 M
3(c)
What is stress relaxation? Derive an expression for the same.
6 M
4(a)
What is solid solution? With neat sketches explain different types of solid solution.
6 M
4(b)
Explain Hume-Rothary rules and Gibbs phase rule.
6 M
4(c)
Differentiate Homogeneous and Hetrogeneous nucleation. How do you compute the critical size of nucleus and activation energy for the homogeneous nucleation?
8 M
5(a)
A binary alloy of composition 60%A and 40%B consists two phases namely liquid and solid at a particular temperature. The composition of solid phase is 23%B and that of liquid phase is 68%B. Estimate the amount of soild and liquid phases is the alloy.
8 M
5(b)
Draw Fe - Fe3C diagram and show all phases, fields, temperature and composition. Write all invariant reactions. Also explain the solidification of steel containing 0.4%C.
12 M
6(a)
Explain TTT digram (for 0.8%C steel) by supper imposing the cooling curves on it.
12 M
Differentiate between:
6(b)(i)
Austempering and martempering
4 M
6(b)(ii)
Annealing and Normalising
4 M
7(a)
Give composition, micro structure, properties and applications of different types of cast - Irons.
12 M
7(b)
Write a note on Magnesium alloys and Titanium alloys.
8 M
8(a)
Define composite. Give brief classification of composites.
6 M
8(b)
With neat sketch explain production of composites, by pultrusion process.
8 M
8(c)
Enumerate the merits, demerits and application of composites.
6 M
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