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Engineering Labs

v2.2.1
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Electrical Machines I

Practical project ideas and implementations for hands-on learning

Armature reaction
Commutation and Interpoles
Construction of DC Machines
DC Generator Characteristics
EMF Equation of DC Generators
Lap Winding
Methods of excitation of the field windings
Methods of Excitation used for DC Generator
Wave Winding
Braking of DC shunt motor
DC Motor Characteristics
Four Point Starter
Hopkinson’s test: Procedure, Calculation of efficiency, Advantages, Disadvantages
Principle of operation of a D.C. Motor
Speed Control of DC Shunt Motor: Varying Armature Resistance, Field Resistance
Starting of DC Motors
Swinburne’s Test
Three Point Starter: Working principle
Types of DC Motors
Working of D.C. Motor
Energy In Magnetic Systems
Force in a Multiply Excited Magnetic Field System
Force In A Singly Excited Magnetic Field System
Magnetic Fields In Rotating Machines
Mmf of Distributed Windings
Rotating Mmf Waves
The Co Energy
The Field Energy
Torque in Ac And Dc Machines
AC Operation of Magnetic Circuits
Flux Linkage, Inductance and Energy
Iron or Core losses
Laws Governing Magnetic Circuits
Magnetic Circuits and Magnetic Materials
Properties of Magnetic Materials
Statically and Dynamically Induced Emf
Transformer as a Magnetically Coupled Circuit
Equivalent Circuit of Single Phase Induction Motor
Magnetic Levitation
Methods of Starting Single Phase Induction Motor
Principle and Working of Split Phase Induction Motor
Repulsion starting - Single Phase Induction Motor: Construction, Working and Characteristics
Schrage Motor
Single Phase Induction Motors
Single Phase Series Motor: Operation, Applications, Phasor Diagram
Stepper Motor Advantages and Disadvantages
Types of Split-Phase Induction Motors
Universal Motors: Operation, Characteristic, Applications
Cascade control - Speed control of Three Phase Induction Motors
Changing applied voltage - Speed control of Three Phase Induction Motors
Double Cage Induction Motor: Construction, Working
Induction Generator
Induction Generator advantages, disadvantages and Application
Methods of Starting Three Phase Induction Motors
Pole changing method - Speed control of Three Phase Induction Motors
Power Stages in an Induction Motor
Rotor resistance control - Speed control of Three Phase Induction Motors
Speed control of Three Phase Induction Motors
Starting of Slip-Ring Induction Motors
Stator frequency control - Speed control of Three Phase Induction Motors
Armature Reaction - Synchronous Generator
Armature Reaction Reactance - Synchronous Generators
E.M.F. equation of an elementary alternator single phase
E.M.F. equation of an elementary alternator three phase
Factors affecting the induced emf (Coil Pitch and Distributed Windings) - Synchronous Generator
Fundamental Principles of A.C. Machines
Load Characteristics - Synchronous Generator
Methods of finding Voltage Regulation in Synchronous Generator
Open circuit characteristic (OCC) and Short Circuit Characteristics (SCC) of a Synchronous generator
Potier Reactance - Synchronous Generator
Power Angle Characteristic of Salient Pole Machine
Power angle characteristics
Relation between speed and frequency
Salient pole alternators and Blondel's Two Reaction Theory
Short Circuit Ratio (SCR) - Synchronous Generator
Slip Test
Synchronous Generators
Synchronous reactance
Voltage Regulation - Synchronous Generator
Effect of Changing Field Excitation at Constant Load
Hunting and Damper Winding
Methods of starting synchronous motor
Performance Characteristic of Synchronous Motors
Phasor Diagram - Synchronous Motors
Synchronous Condenser and its Advantages, Disadvantages
Synchronous Induction Motor
Synchronous Motors: Construction, Operating Principle, Equivalent Circuit
Torque and Power Relations
V-Curves and Inverted V-Curves
Alternate Analysis for Rotating Magnetic Field
Circle Diagram - analyse the three phase induction motor performance
Construction of Circle Diagram - Induction Motor
Induction Motor Torque
Principle of Operation - Three Phase Induction Motor
Rotating Magnetic Field and Induced Voltages
Slip ring Induction Motors
Squirrel cage Induction Motors
Tests to Determine the Equivalent Circuit Parameters - Induction Motor
Three Phase Induction Motor
Types and Construction of Three Phase Induction Motor
An ideal Transformer: Principle of Operation
Auto Transformer
Efficiency of a Transformer
Equivalent Circuit of Transformer
Induction Law - Transformer
Parallel Operation of Transformers
Tap Changing in Transformer
Three-phase autotransformer connection
Transformer Losses
Transformer Tests
Transformer: Principle of Operation
Voltage Regulation of Transformer