PH6251 - ENGINEERING PHYSICS – II Question Paper/Bank Regulation - 2013

University: Anna University and Affiliated Colleges

Semester: 02

Subject Code: PH6251

Subject Name: ENGINEERING PHYSICS – II

Department : Common for all

Regulation : 2013

Type: Question Bank /Question Papers

Year : First

Download: PH6251 - ENGINEERING PHYSICS – II Question Paper

PH6251 - ENGINEERING PHYSICS – II Syllabus

UNIT I CONDUCTING MATERIALS 9

Conductors – classical free electron theory of metals – Electrical and thermal conductivity –

Wiedemann – Franz law – Lorentz number – Draw backs of classical theory – Quantum theory –

Fermi distribution function – Effect of temperature on Fermi Function – Density of energy states –

carrier concentration in metals.

UNIT II SEMICONDUCTING MATERIALS 9

Intrinsic semiconductor – carrier concentration derivation – Fermi level – Variation of Fermi level with

temperature – electrical conductivity – band gap determination – compound semiconductors -direct

and indirect band gap- derivation of carrier concentration in n-type and p-type semiconductor –

variation of Fermi level with temperature and impurity concentration –– Hall effect –Determination of

Hall coefficient – Applications.

UNIT III MAGNETIC AND SUPERCONDUCTING MATERIALS 9

Origin of magnetic moment – Bohr magneton – comparison of Dia, Para and Ferro magnetism –

Domain theory – Hysteresis – soft and hard magnetic materials – antiferromagnetic materials –

Ferrites and its applications

Superconductivity : properties – Type I and Type II superconductors – BCS theory of

superconductivity(Qualitative) - High Tc superconductors – Applications of superconductors – SQUID,

cryotron, magnetic levitation.

UNIT IV DIELECTRIC MATERIALS 9

Electrical susceptibility – dielectric constant – electronic, ionic, orientational and space charge

polarization – frequency and temperature dependence of polarisation – internal field – Claussius –

Mosotti relation (derivation) – dielectric loss – dielectric breakdown – uses of dielectric materials

(capacitor and transformer) – ferroelectricity and applications.

UNIT V ADVANCED ENGINEERING MATERIALS 9

Metallic glasses: preparation, properties and applications. Shape memory alloys (SMA):

Characteristics, properties of NiTi alloy, application, Nanomaterials– Preparation -pulsed laser

deposition – chemical vapour deposition – Applications – NLO materials –Birefringence- optical Kerr

effect – Classification of Biomaterials and its applications

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