Electrical Machines I - EE8301, EE6401

MAGNETIC CIRCUITS AND MAGNETIC MATERIALS

=> Magnetic Circuits and Magnetic Materials
=> Laws Governing Magnetic Circuits
=> Flux Linkage, Inductance and Energy
=> Statically and Dynamically Induced Emf
=> Properties of Magnetic Materials
=> Iron or Core losses
=> AC Operation of Magnetic Circuits
=> Transformer as a Magnetically Coupled Circuit
=> Solved problems - Magnetic Circuits and Magnetic Materials
=> Important Short Questions and Answers : Electrical machines - Magnetic Circuits and Magnetic Materials

TRANSFORMERS

=> Transformer: Principle of Operation
=> An ideal Transformer: Principle of Operation
=> Induction Law - Transformer
=> Equivalent Circuit of Transformer
=> Transformer Losses
=> Transformer Tests
=> Efficiency of a Transformer
=> Voltage Regulation of Transformer
=> Auto Transformer
=> Three-phase autotransformer connection
=> Parallel Operation of Transformers
=> Tap Changing in Transformer
=> Solved Problems - Transformer - Electrical machines
=> Important Short Questions and Answers: Electrical machines - Transformer

ELECTROMECHANICAL ENERGY CONVERSION AND CONCEPTS IN ROTATING MACHINES

=> Energy In Magnetic Systems
=> The Field Energy
=> The Co Energy
=> Force In A Singly Excited Magnetic Field System
=> Force in a Multiply Excited Magnetic Field System
=> Mmf of Distributed Windings
=> Magnetic Fields In Rotating Machines
=> Rotating Mmf Waves
=> Torque in Ac And Dc Machines
=> Solved Problems - Electromechanical Energy Conversion and Concepts in Rotating Machines
=> Important Short Questions and Answers - Electromechanical Energy Conversion and Concepts in Rotating Machines

DC GENERATORS

=> Construction of DC Machines
=> Lap Winding
=> Wave Winding
=> EMF Equation of DC Generators
=> Armature reaction
=> Methods of excitation of the field windings
=> Methods of Excitation used for DC Generator
=> Commutation and Interpoles
=> DC Generator Characteristics
=> Important short questions and answers: DC Generators

DC MOTORS

=> Principle of operation of a D.C. Motor
=> Working of D.C. Motor
=> Types of DC Motors
=> DC Motor Characteristics
=> Speed Control of DC Shunt Motor: Varying Armature Resistance, Field Resistance
=> Starting of DC Motors
=> Three Point Starter: Working principle
=> Four Point Starter
=> Swinburne’s Test
=> Hopkinson’s test: Procedure, Calculation of efficiency, Advantages, Disadvantages
=> Braking of DC shunt motor
=> Important Short questions and answers: DC Motor - Electrical machines