PH 2161 Engineering Physics II Previous Year Question Paper Download
UNIT I CONDUCTING MATERIALS
Conductors – classical free electron theory of metals – Electrical and thermal conductivity – Riemann – 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
Intrinsic semiconductor – carrier concentration derivation – Fermi level – Variation of Fermi level with temperature – electrical conductivity – band gap determination – extrinsic semiconductors – carrier concentration derivation in n-type and p-type semiconductor – variation of Fermi level with temperature and impurity concentration – compound semiconductors – Hall effect –Determination of Hall coefficient – Applications.
UNIT III MAGNETIC AND SUPERCONDUCTING MATERIALS
Origin of magnetic moment – Bohr magneto – Dis and para magnetism – Ferry magnetism Domain theory – Hysteresis – soft and hard magnetic materials – anti – ferromagnetic materials – Ferries – applications – magnetic recording and readout – storage of magnetic data – tapes, floppy and magnetic disc drives. Superconductivity : properties – Types of super conductors – B C S theory of superconductivity(Qualitative) – High Tc superconductors – Applications of superconductors – SQUID, cyclotron, magnetic levitation.
UNIT IV DIELECTRIC MATERIALS
Electrical susceptibility – dielectric constant – electronic, ionic, orientation and space charge polarization – frequency and temperature dependence of polarization – internal field – Clausius – Osmotic relation (derivation) – dielectric loss – dielectric breakdown – uses of dielectric materials (capacitor and transformer) – hydroelectricity and applications.
UNIT V MODERN ENGINEERING MATERIALS
Metallic glasses: preparation, properties and applications. Shape memory alloys (S M A) Characteristics, properties of Ni Ti alloy, application, advantages and disadvantages of S MA Nano materials: synthesis –plasma arcing – chemical vapor deposition – sol-gels – electrode position – ball milling – properties of nano particles and applications. Carbon nano tubes: fabrication – arc method – pulsed laser deposition – chemical vapor deposition – structure – properties and applications.
PH 2161 Engineering Physics II Previous Year Question Paper for Regulation 2017 Download
PH 2161 Engineering Physics II Nov/Dec 2019 Question Paper Download