Name of the University : Jadavpur University
Department : Metallurgical Engineering
Degree : B.E
Subject Name : Physics of Metals
Year/Sem : III/II
Website : jaduniv.edu.in
Document Type : Model Question Paper
Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/dspace.jdvu.ac.in/5453-Physics%20of%20Metals.pdf
Physics of Metals Question Paper :
2nd Semester Examination 2012 :
Time: 3 hours
Marks: 100
Related : Jadavpur University Steel Making B.E Model Question Paper : www.pdfquestion.in/5461.html
Attempt three questions from Group A and two questions from Group B :
Use separate answer scripts for each Group Group A :
** Using quantum mechanical operator formalism, find the time independent Schrodinger Wave equation. (10)
** Find the wave function of a free particle in a rigid box of length L, Compute the expectation value of the position of the particle in the rigid box. (55)
** Define density of states. Assuming quantum mechanical expression for the energy of free electroll, find the expression for the density of states. (25)
** The electronic heat capacity of metals is about 1% or less than that predicted classically. Explain. (6)
** Show that the electrons lying near the Fermi emergy take part in the electrical conduction process, )
** For a cubic system of lattice parameter “a”, as the wave vector of electrons approaches the zone boundary it deviates from the free electrum EK. curve and the stronger the interaction of electrolls, the higher the range of deviations, Explain. (10)
** For a square lattice of lattice parameter “a”, draw and explain the first and second zone. (10)
** With reference to spin angular momentum explain space quantization. Show that each spin contributes 1Bohr Magneton of magnetic moment, 5
** State the Curie law of paramagnetism. Discuss a simple theory based on spin system to explain the Curie law. (2t 10)
** Find an expression for the electrical conductivity of metals which is based on Classical mechanical approach, 10)
** Based on the theory of the paramagnetic spin system, explain the occurrence of spontaneous magnetization of ferromagnets below the Curie temperature. 10)
** Group B Differentiate between external and internal symmetry of crystals. (3)
** What are point groups? Explain HermanMaugins symbols for tetraginal, orthorhombic and hexagonal systems. (25)
** Draw the following point groups: mm2, 32,422 and 6mm. (8)
With reference to stereographic projection answer the following:
** What is a pole and what is a trace? (5)
** A pole is to be rotated clockwise about N8 axis by 120°. After 60° rotation it comes to the edge of the latitude line. What will you do to accomplice the full rotation. (3)
** Why planes of a zone lie on a great circle, Show that (hkl) of a pole of a cubic system is given by h1 cosm: cosBeasy. (3)
** Explain the following terms: i) ionization potential; ii) electron affinity; iii) electronegativity; & ) bond energy. (12)
** How mechanical properties and thermal properties of metals can be explained from their corresponding bonding characteristics. (8)
Syllabus :
Physics Of Metals :
Crystal symmetry, symmetry groups, stereographic projection.Free electron theory, density of states, Fermi level, electrical conductivity of metals, Zone theory, Brillouin zones, conductors, semiconductors and insulators, Zone theory of alloy phases.
Magnetic properties, dia-magnetism, para-magnetism, ferro magnetism, ferrimagnetism, antiferromagnetism ; bark Hausen noise etc. Bhor magneton, Domain theory, magnetic materials, B-H curves, superconductivity, dielectric properties.
Foundry Metallurgy Laboratory :
Sand Testing : Grading of Sand for foundry purpose, Determination of Optimum moisture content in Green Sand Practice, Determination of DCS of Core Sand, Determination of Permeability for molding sand mixtures, Sand Molding Practice for production of molds (Cope & Drag Pattern), Core- making Practice, Study of different types of Pattern.
Gating Design Calculations, Riser Design by Modulus method, Melting of metals & Production of Castings using sand molds/metal molds. Identification of Casting Defects & Cast-metal Structures.