STUPIDSID
1 (a)
Sketch the unit cell of a HCP crystal structure.Calcultate the number of atoms per unit cell.Derive an expression for the density of atomic packing.(Given C=1.6339
8 M
1 (b)
Explain different types of mechanics of diffusion in solids
8 M
1 (c)
Aluminium has a FCC structure and an atomic radius of 0.143mm.Calculate volume of its unit cell in cubic meters
4 M
2 (a)
Define engineering stress and strain true stress strain.find out the relationship between true and engineering strain
8 M
2 (b)
A steel rod of 10mm diameter and1.5 mm length is subjected to an axial tensible load of 1kN .Determine stress
Strain
strain
Elogation.take modules of elasticity of steel=205×106kN/m2
Strain
strain
Elogation.take modules of elasticity of steel=205×106kN/m2
6 M
2 (c)
Differntiate between slip and twinning deformation in materials
6 M
3 (a)
Define creep with a typical creep curves .Explain different stages of creep
6 M
3 (b)
Sketches the basis modes of fracture. List the difference between them
6 M
3 (c)
What is fatigue?Draw the SN curves for steel and aluminum alloys
8 M
4 (a)
Explain the homogeneous nuclearation.discuss the significance of critical radius of the nuclei
8 M
4 (b)
Define solid solution .and explain the different type of solid soluution
6 M
4 (c)
State the gibbs phase rule and expalin with a simple example
6 M
5 (a)
draw the Iron-carbon equlibrium diagram and label all the field.Write the different invariation reaction
10 M
5 (b)
Explain the step to construct TTT digram Draw a sketch of a TTT diagram label all the fields for an eutectoid steel
10 M
6 (a)
Define the process of heat treatment and classify the various heat treatment processes
8 M
6 (b)
Explain carburzing with a neat sketch
6 M
6 (c)
Define hardenability of a material and list the factors affecting hardenability.
6 M
7 (a)
Briefly describe the compostition ,propertise and application of medium and high carbon steel .
8 M
7 (b)
Briefly describe the composition ,properties and application of grey cast iron
6 M
7 (c)
Discuss AIST -SAE designation of steel with example
6 M
8 (a)
What is a composite material ?how is it classified ?Explain briefly
10 M
8 (b)
With a neat sketch,explain the hand lay up laminating process
10 M
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