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Jharkhand University of Technology, Jharkhand, Electrical Engineering Semester 3, Electrical Machine-I Syllabus
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Unit - 1 Principles Of Electro-Mechanical Energy Conversion
Unit 1
Principles of Electro mechanical Energy Conversion
1.1 Introduction
1.2 Flow of energy in electromechanical devices
1.3 Energy in magnetic systems
1.4 Singly excited systems
1.5 Determination of mechanical force
1.6 Mechanical energy
1.7 Torque equation
1.8 Doubly excited systems
1.9 Energy stored in magnetic field
1.10 Electromagnetic torque
1.11 Generated emf in machines
1.12 Torque in machines with cylindrical air gap
Unit - 2 D.C Machines
Unit 2
D.C Machines
2.1 Construction of D.C Machines
2.2 Armature winding
2.3 EMF and torque equations
2.4 Armature reaction
2.5 Commutation
2.6 Interpoles and compensating windings
2.7 Performance characteristics of D.C Generators and D.C Motors
2.8 Starting of D.C Motors
2.9 3 point and 4 point starters
2.10 Speed control of D.C Motors Field Control
2.11 Armature control and Voltage control Ward Leonard method
2.12 Efficiency and testing of D.C Machines Hopkinsons and Swinburns Test
Unit - 3 Single Phase Transformers
Unit 3
Single phase Transformers
3.1 Construction of Singlephase Transformers Principle of operation EMF equation
3.2 Phasor diagram
3.3 Equivalent circuit Determination of equivalent circuit parameters
3.4 Losses Calculation of efficiency and regulation
3.5 OC and SC test Polarity test Sumpner’s test
3.6 Parallel operation of transformers and load sharing
3.7 Principle of single phase auto Transformer
3.8 Saving of copper compared to two winding transformer and its application
3.9 Cooling methods of transformer
Unit - 4 Three Phase Transformers
Unit 4
Three phase transformers
4.1 Construction Three phase transformers
4.2 Phasor groups and their connections
4.3 Open delta connection
4.4 Three phase to 2 phase 6 phase and 12 phase connections and their applications
4.5 Principle of three phase auto Transformer
4.6 Parallel operation of single phase and three phase transformers
4.7 Load sharing
4.8 Excitation phenomenon
4.9 Harmonics in transformers
4.10 Three winding transformers
Unit - 5 Three Phase Induction Machine
Unit 5
Three Phase Induction machine
5.1 Constructional features
5.2 Rotating magnetic field
5.3 Principle of operation
5.4 Phasor diagram
5.5 Equivalent circuit
5.6 Torque and Power equations
5.7 Torque slip characteristics
5.8 No Load test
5.9 Blocked rotor test
5.10 Efficiency
5.11 Starting
5.12 Braking and speed control
5.13 Deep bar and double cage rotors
5.14 Cogging and Crawling
5.15 Induction generators and its applications
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