Anna University Engineering Physics for all B.E/B.Tech

Anna University Engineering Physics for all B.E/B.Tech 

   PH8151               ENGINEERING PHYSICS                          L  T  P  C

                           (Common to all Branches of B.E./B.Tech.Programmes)           3  0  0   3

OBJECTIVE:

To introduce the basic physics concepts relevant to different branches of Engineering and
Technology.

UNIT I                          PROPERTIES OF MATTER                                                     9

Elasticity - Poisson's ratio and relationship between moduli (qualitative) - Stress-strain diagram -
factors affecting elasticity  - bending of beams  - cantilever  - bending moment  - theory and
experiment of Young's modulus determination - Uniform and non-uniform bending - I shaped
girders - twisting couple - hollow cylinder - shaft - torsion pendulum - determination of rigidity
modulus- moment of inertia of a body (regular and irregular).

UNIT II                      ACOUSTICS AND ULTRASONICS                                          9

Classification of sound - loudness and intensity - Weber-Fechner Law - standard intensity and
intensity level - decibel - reverberation - reverberation time - rate of growth and decay of sound
intensity - derivation of Sabine's formula - absorption coefficient and its determination - factors
affecting acoustics of buildings : focussing, interference, echo, Echelon effect, resonance  -
noise and their remedies.  Ultrasonics  - production  – magnetostriction and piezoelectric
methods - detection of ultrasound - acoustic grating - industrial applications - NDT - Ultrasonic
method: scan modes and practice.

UNIT  III                   THERMAL PHYSICS                                                                  9

Thermal expansion - thermal stress - expansion joints - bimetallic strips - thermal conductivity -
conductions in solids - Forbe's and Lees' disc methods - Rectilinear flow of heat through a rod -
flow of heat through a compound materials  - radical flow of heat through a spherical shell  -
thermal insulation of buildings  – Laws of blackbody radiation: Kirchoffs law, Stephens law,
Wiens law, Raleigh-Jean law and Planks law (derivation). Laws of thermodynamics - Otto and
diesel engines and their efficiency - entropy - entropy of Carnot's cycle - reverse Carnot's cycle -
refrigerator.

UNIT  IV                  APPLIED OPTICS                                                                         9

Interference - Michelson interferometer: construction, working, determination of wave length and
thickness - anti-reflection coating - air wedge and its application - Lasers - Einstein's coefficients
- CO2, Nd:YAG and semiconductor lasers -  homo junction and hetro junction -  construction and
working  - applications  - Optical fibres  - classification (index & mode based)  - principle and
propagation of light in optical fibres  - acceptance angle and numerical aperture  - fibre optic
communication system - active and passive sensors.

UNIT V                  SOLID STATE PHYSICS                                                                 9

Nature of bonding - growth of single crystals (qualitative) - crystal systems - crystal planes and
directions - expressions for interplanar distance - coordination number and packing factor for
simple structures: SC, BCC, FCC and HCP - structure and significance of NaCl, ZnS, diamond
and graphite - crystal imperfections: point defects, dislocations and stacking faults - unit cell,
Bravais space lattices - miller indices.
TOTAL : 45 PERIODS

TEXT BOOKS:

1. Gaur R.K., and Gupta, S.L., Engineering Physics, Dhanpat Raj Publications,2003.
2. Palanisamy, P.K., Engineering Physics, Scitech Publications (P) Ltd, 2006.
3. Arumugam, M., Engineering Physics, Anuradha Publications, 2000.

REFERENCES:

1. Sankar, B.N., Pillai.S.O., Engineering Physics, New Age International (P) Ltd., 2007.
2. Rajendran.V Engineering Physics, Tata McGraw-Hill, 2009.