Unit-1 : Transformer: Principles of working of t\rs , and equation, detail of construction, operation on no load & on load of an ideal and practical transformers, phase diagram, equivalent circuit, losses, regulation & efficiency. O.C & S.C tests of transformers, Condition of maxi. Efficiency, All day efficiency, Testing of transformer, methods of cooling the transformers.
Poly phase T\Rs, construction types of connections used for distribution and transmission line. Parallel operation of 1-pahse T\Rs, Scott connection, methods of connection of 3-phase T\Rs. For 6-phase (Diameter double star, double delta)
Instrument T\Rs. And constant current T\Rs., welding T\Rs., auto T\Rs., I.S. for T\Rs.,
Unit � 2 :- D.C Generators: General features of construction, simple lap and wave winding of armature and their comparison. Principle of working of d.c.generators , e.m.f. equation, types of generators, methods of excitation of d.c.generators, performances of characteristics, Elementary treatment of armature reaction and commutation, methods of improving the commutation.
Losses and efficiency, parallel operation of d.c.shunt and compound generators, equalizer bar.
Unit-3: D.C.Motors: General features of construction, working principles of d.c.motors, types of motors, Back e.m.f. equation. Torque, relation between back e.m.f, current ,speed and torque, performance of characteristic of dc motors, speed control of D.C. motors, motor starters.
Losses and efficiency, swinburne�s test & break test condition of maximum efficiency. Application of different motors in industries & electric traction.
Books for Reference :-
1. Electrical Engg.:- By k.D.Shah & C.M.Amin
2. Electrical Engg. :- By R.C.Patel & S.I.Patel
3. Electrical Technology :- By H.Cotton.
>2.Linear Integrated Electronics
<3.Electrical Machine I
>4.Electrical Instruments & Measurements
>5.Elect. Installation & Maintenance
