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## Department: Electrical Electonics and Communication Engineering EEE ECE

**Electrical Machines II** - EE8401, EE6504

## Online Study Material, Lecturing Notes, Assignment, Reference, Wiki and important questions and answers

**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 ** -:- ** Stepper Motor Advantages and Disadvantages ** -:- ** Important Short Questions and Answers: Single Phase Induction Motor and Special Machines