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Transformer:
Principle of operation, construction � Core and Shell type, EMF equation, Equivalent circuit, Losses, Efficiency and Voltage Regulation, OC and SC tests � determination of Equivalent circuit parameters, predetermination of Efficiency and Voltage Regulation, applications. - 8 hrs.
Three phase Induction Motor:
Rotating magnetic field, working principle, construction � Squirrel Cage and Slip ring type, rotor frequency, Torque equation, Torque � slip characteristics, Losses and Efficiency.
Starters � Autotransformer and Star-Delta type starters.
Speed control � rotor resistance control and pole changing methods.
Applications. - 10 hrs
Synchronous Motor:
Principle of operation, construction, synchronous impedance, Back EMF, Effect of excitation, V and inverted V curves, Mechanical power developed, starting methods, synchronous condenser, applications. - 8 hrs.
References:
1.Langsdorf H., �Theory of Alternating Current Machines�, 2nd Edition, TMH, 1994.
2.Say M. G., �Alternating Current Machines�, 5th edition, ELBS, 1994.
3.Fitzerald, Kingsley and Umans, �Electrical Machinery�.
4.Stephen J. Champman, �Electrical Machinery Fundamentals�.
5.Parkersmith S, Problems in Electrical Engineering, Asia Publishing House, 1984
ANALYSIS AND CONTROL OF ELECTROMAGNETIC DEVICES LABORATORY
1. Load test on single-phase transformer to determine Efficiency and Voltage Regulation.
2. O.C. and S.C. tests on single-phase transformer to determine Equivalent circuit parameters, predetermination of Efficiency and Voltage Regulation.
3. Separation of No load losses of 3-phase Induction motor.
4. No load and Blocked rotor tests to determine Equivalent circuit parameters and performance characteristics of 3-phase Induction motor.
5. Load test on 3-phase Induction motor.
6. V and inverted V curves of Synchronous motor.