Electrical Machines and Applications- I
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Follow on Instagram for UpdatesElectrical Machines and Applications- I Syllabus — Unit-wise Content
The official GTU curriculum for Electrical Machines and Applications- I (subject code BE03024021) as prescribed for PE · Semester 3 divides the course into 6 units, covering 96 listed topics. The unit-wise breakdown below is read from the GTU syllabus document for this subject code, so you can check what the course actually covers before deciding which papers to attempt.
Download the official syllabus PDF (BE03024021)Unit 1 Introduction
- Principle of Electromechanical Energy conversion
- forces and torque in magnetic field systems – energy balance
- energy and force in a singly excited magnetic field system
- determination of magnetic force
- multi excited magnetic field systems
- Program Name: Engineering Level: UG Subject Code: BE03024021 Subject Name: Electrical Machines and Applications- I Unit No
- Content No. of Hours % of Weightage
Unit 2 DC Generators
- Principle of operation
- Action of commutator
- constructional features
- armature windings
- lap and wave windings
- simplex and multiplex windings
- use of laminated armature, E
- Methods of Excitation: separately excited and self-excited generators
- Types of DC generators
- build-up of E.M.F.
- critical field resistance and critical speed
- causes for failure to self-excite and remedial measures
- Armature reaction: Cross magnetizing and demagnetizing AT/pole
- compensating winding
- reactance voltage
- methods of improving commutation
- characteristics of generators
- separately Excited DC generator
- parallel operation of DC generators
- use of equalizer bar and cross connection of field windings
- load sharing
Unit 3 DC Motors
- Principle of operation
- Torque equation
- Types of DC motors
- characteristics and application of shunt
- series and compound motors
- Armature reaction and commutation
- Starting of DC motor
- Principle of operation of 3 point and 4 point starters
- Constant & Variable losses
- calculation of efficiency
- condition for maximum efficiency
- Speed control of DC Motors: Armature voltage and field flux control methods
- Ward Leonard method
- Methods of Testing: direct
- indirect and regenerative testing
- brake test
- Swinburne’s test
- Load test
- Hopkinson’s test
- Field’s test
- Retardation test
- separation of stray losses in a DC motor test
- Types of Electric Breaking
Unit 4 Single Phase Transformers
- Single phase transformer
- Constructional details
- principle of operation
- emf equation
- magnetizing current and core losses
- no load and on load operation
- Phasor diagram
- equivalent circuit
- losses and efficiency
- condition for maximum efficiency
- voltage regulation
- approximate expression for voltage regulation
- Losses in Transformers
- open circuit and short circuit tests
- Sumpner’s test
- Transformer efficiency
- All-day efficiency
- Auto transformer
- Inrush of switching currents
- harmonics in single phase transformers
- magnetizing current wave form
- Parallel operation of transformers
- Program Name: Engineering Level: UG Subject Code: BE03024021 Subject Name: Electrical Machines and Applications- I Unit No
- Content No. of Hours % of Weightage
Unit 5 Three phase Transformer
- Constructional features of three phase transformers – three phase connection of transformers
- Star- Star
- Scott connection
- open delta connection
- three phase to six phase connection
- three phase to twelve- phase connection
- oscillating neutral
- tertiary winding
- three winding transformer
- equal and unequal turns ratio
- parallel operation
- load sharing
- Distribution transformers
- all day efficiency
- saving of copper
- tap- changing transformers
- Instrument Transformer
- Current Transformer
- Difference between Current Transformer and Power Transformer cooling of transformers
Unit 6 Special Electrical Machine
- Stepper Motor: Types of Stepper Motor – torque equation – Characteristics of stepper motor – Comparison of stepper motor – Application
- PMDC Motor: Types of PMDC and PMBLDC – torque equation and equivalent circuit – Performance Characteristics of PMDC – Comparison of PMDC and PMBLDC – Application
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