WITH EFFECT FROM THE ACADEMIC YEAR 2011 - 2012
EE 222
ELECTRICAL TECHNOLOGY
(For ECE)
Instruction 4 Periods per week
Duration of University Examination 3 Hours
University Examination 75 Marks
Sessional 25 Marks
Unit-I
DC Generators: Constructional details, Simple lap and wave windings, Methods of excitation, Induced emf, Basic ideas of armature reaction and commutation, Characteristics of shunt, series and compound generators and applications.
DC Motors: Torque developed in motors, Motor starter, Characteristics of shunt, series and compound motors, Speed control of DC motors.
Unit-II
Balanced three-phase system: Star-delta connection, Relationship between line and phase quantities, Measurement of power by Two-Wattmeter method. AC Generators: Construction, emf equation, Armature reaction, Synchronous impedance, Regulation.
Unit-III
Transformers: Single-phase transformer: Construction, Theory of operation, Phasor diagram under no-load and loaded conditions, OC and SC tests on transformer, Efficiency and regulation, Auto transformer, Theory of operation.
Unit-IV
Induction Motors: Construction, Production of rotating magnetic field, Slip-torque characteristics, Starters for cage and wound rotor induction motors, Single-phase induction motors, Construction, Theory of operation, Characteristics of shaded pole, Split phase and Capacitor motors, Applications.
Unit-V
Power Systems: Basic ideas of thermal, hydro, nuclear and non-conventional generating systems and layout, Block schematic of power systems, Transmission using high voltages, Advantages, Basic ideas of line parameters, Short line calculations.
Suggested Reading:
- 1.H.Cotton, Electrical Technology, BI Publications, 2002.
M.L. Soni, P.V. Gupta and V.S. Bhatnagar, A Course in Electrical Power, Dhanpat Rai and Sons, Delhi, 2005.