its required for my 4th sem exam. and this book is very good. elaboratly explanated numericals are there.

The academic study of electric machines is the universal study of electric motors and electric generators. By the classic definition, electric machine is synonymous with electric motor or electric generator, all of which are electromechanical energy converters: converting electricity to mechanical power (i.e., electric motor) or mechanical power to electricity (i.e., electric generator). The movement involved in the mechanical power can be rotating or linear.

The apparatus that converts energy in three categories: generators which convert mechanical energy to electrical energy, motors which convert electrical energy to mechanical energy, and transformers which changes the voltage level of an alternating current.Although transformers do not contain any moving parts they are also included in the family of electric machines because they utilise electromagnetic phenomena.

Electric machines (i.e., electric motors) consume approximately 60% of all electricity produced. Electric machines (i.e., electric generators) produce virtually all electricity consumed. Electric machines have become so ubiquitous that they are virtually overlooked as an integral component of the entire electricity infrastructure. Developing ever more efficient electric machine technology and influencing their use are crucial to any global conservation, green energy, or alternative energy strategy.

Table of Contents
♦ Introductory ♦ Magnetically Coupled Circuits and Transformers ♦ Field Excitation and Generated Voltage ♦ Armature Excitation and Torque in Electrical Machine ♦ Flux- m.m.f. Relationship and Phasor Diagram ♦ Steady-state Characteristics ♦ Operation and Control ♦ Theory of Polyphase Asynchronous Machines ♦ Starting, Braking and Speed-Control of Induction Motor ♦ Induction Machine for Special Purpose ♦ Single-phase Asynchronous Motor ♦ Commutator Action ♦ Direct Current Machines ♦ Transients and Dynamics ♦ Electrical Machines in Control Systems