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# Electrical Machines II - EE6504

## SYNCHRONOUS GENERATOR

-:- Fundamental Principles of A.C. Machines
-:- E.M.F. equation of an elementary alternator single phase
-:- E.M.F. equation of an elementary alternator three phase
-:- Relation between speed and frequency
-:- Factors affecting the induced emf (Coil Pitch and Distributed Windings) - Synchronous Generator
-:- Armature Reaction - Synchronous Generator
-:- Synchronous Generators
-:- Open circuit characteristic (OCC) and Short Circuit Characteristics (SCC) of a Synchronous generator
-:- Armature Reaction Reactance - Synchronous Generators
-:- Synchronous reactance
-:- Short Circuit Ratio (SCR) - Synchronous Generator
-:- Load Characteristics - Synchronous Generator
-:- Potier Reactance - Synchronous Generator
-:- Voltage Regulation - Synchronous Generator
-:- Methods of finding Voltage Regulation in Synchronous Generator
-:- Power angle characteristics
-:- Salient pole alternators and Blondel's Two Reaction Theory
-:- Direct-axis and Quadrature-axis Synchronous Reactances
-:- Power Angle Characteristic of Salient Pole Machine
-:- Slip Test
-:- Parallel Operation of Alternators
-:- Synchronizing Current
-:- Effect of Change of Excitation
-:- Effect of Change of Input Torque
-:- Sharing of load when two alternators are in parallel
-:- Prime-mover Governor Characteristic
-:- Important Short Questions and Answers: Synchronous Generator

## SYNCHRONOUS MOTOR

-:- Synchronous Motors: Construction, Operating Principle, Equivalent Circuit
-:- Phasor Diagram - Synchronous Motors
-:- Torque and Power Relations
-:- V-Curves and Inverted V-Curves
-:- Effect of Changing Field Excitation at Constant Load
-:- Synchronous Condenser and its Advantages, Disadvantages
-:- Methods of starting synchronous motor
-:- Performance Characteristic of Synchronous Motors
-:- Hunting and Damper Winding
-:- Synchronous Induction Motor
-:- Important Short Questions and Answers: Synchronous Motors

## THREE PHASE INDUCTION MOTOR

-:- Three Phase Induction Motor
-:- Types and Construction of Three Phase Induction Motor
-:- Squirrel cage Induction Motors
-:- Slip ring Induction Motors
-:- Principle of Operation - Three Phase Induction Motor
-:- Rotating Magnetic Field and Induced Voltages
-:- Alternate Analysis for Rotating Magnetic Field
-:- Phasor Diagram of Three Phase Induction Motor
-:- Equivalent Circuit of Three Phase Induction Motor
-:- Power and Torque Relations of Three Phase Induction Motor
-:- Induction Motor Torque
-:- Rotor Output
-:- Circle Diagram - analyse the three phase induction motor performance
-:- Tests to Determine the Equivalent Circuit Parameters - Induction Motor
-:- Construction of Circle Diagram - Induction Motor
-:- Performance Characteristics of Three phase Induction Motor
-:- Operation with Unbalanced Supply Voltage on Polyphase Induction Motors
-:- Important Short Questions and Answers: Three Phase Induction Motor

## STARTING AND SPEED CONTROL OF THREE PHASE INDUCTION MOTOR

-:- Methods of Starting Three Phase Induction Motors
-:- Starting of Slip-Ring Induction Motors
-:- Speed control of Three Phase Induction Motors
-:- Changing applied voltage - Speed control of Three Phase Induction Motors
-:- Rotor resistance control - Speed control of Three Phase Induction Motors
-:- Cascade control - Speed control of Three Phase Induction Motors
-:- Pole changing method - Speed control of Three Phase Induction Motors
-:- Stator frequency control - Speed control of Three Phase Induction Motors
-:- Power Stages in an Induction Motor
-:- Double Cage Induction Motor: Construction, Working
-:- Cogging and Crawling of Induction Motor
-:- Induction Generator
-:- Induction Generator advantages, disadvantages and Application
-:- Induction Motor Braking Regenerative Plugging Dynamic
-:- Important Short Questions and Answers: Starting and Speed Control of Three Phase Induction Motor

## SINGLE PHASE INDUCTION MOTORS AND SPECIAL MACHINES

-:- Single Phase Induction Motors
-:- Double Revolving Field Theory of Single Phase Induction Motor
-:- Equvalent Circuit of Single Phase Induction Motor
-:- Methods of Starting Single Phase Induction Motor
-:- Principle and Working of Split Phase Induction Motor
-:- Types of Split-Phase Induction Motors
-:- Repulsion starting - Single Phase Induction Motor: Construction, Working and Characteristics
-:- Shaped Pole Starting - Single Phase Induction Motor
-:- Single Phase Series Motor: Operation, Applications, Phasor Diagram
-:- Schrage Motor
-:- Universal Motors: Operation, Characteristic, Applications
-:- Magnetic Levitation