UNIQUE SERIES AKTU Syllabus
BEE402

Electrical Machines-I

L-T-P3-1-0 Credits4 Session2023-24 TypeTheory
Appears in 3 semesters · 3 branches

B.Tech Electrical Engineering · Sem 4 (Core) · B.Tech Electrical & Electronics Engineering · Sem 4 (Core) · B.Tech Electrical & Computer Engineering · Sem 4 (Core)

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Pre-requisites: Basic Electrical Engineering, Engineering Mathematics

Syllabus

5 units
Unit1

Unit 1

  • Pre- Requisites: Magnetic Materials, BH characteristics
  • Principles of Electro-mechanical Energy Conversion: Introduction, Review of magnetic system, Energy in Magnetic system, Force and torque in magnetic field system, Energy balance equation, Energy conversion via electrical field, Energy in a singly excited system, Determination of the Force and Torque from energy and co-energy, Generation of EMF in Machines, Torque in machine with cylindrical air gap.
Unit2

Unit 2

  • Pre- Requisites: Principle & Construction, Classification and circuit model, EMF equation of generator and torque equation of motor
  • DC Machines: Armature winding (Concentrated and Distributed), Winding Factor, Armature reaction, Commutation, Interpoles and compensating windings, Performance characteristics of DC generators, Applications.
Unit3

Unit 3

DC Machines (Contd.): Performance characteristics of DC motors, Starting of DC motors; 3 point and 4 point starters, Speed control of DC motors; Field control, Armature control and Voltage control (Ward Leonard method); Efficiency and Testing of DC machines (Hopkinson's and Swinburne's Test), Applications, stepper motor and DC Servo motor and their applications.

Unit4

Unit 4

  • Pre- Requisites: Construction & Principle, Ideal and practical transformer, equivalent circuit & phasor diagram, losses in transformers.
  • Single Phase Transformer: Efficiency and voltage regulation, all day efficiency, Excitation phenomenon and harmonics in transformers. Testing of Transformers- O.C. and S.C. tests, Polarity test, Sumpner's test. Auto Transformer- Single phase and three phase autotransformers, Volt-amp relation, Copper saving in autotransformer Efficiency, Merits & demerits and applications.
Unit5

Unit 5

Pre- Requisite: Three-phase connections – Star/Delta. Three Phase Transformers: Construction, Three phase transformer, phasor groups and their connections, open delta connection, three phase to 2 phase and their applications, Three winding transformers. Parallel operation of single phase and three phase transformers and load sharing.

Course Outcomes (COs)5 outcomes

After completion of the course student will be able to:

  1. CO1Analyze the various principles & concepts involved in Electromechanical Energy conversion.K4
  2. CO2Demonstrate the constructional details of DC machines as well as transformers, and principle of operation of brushless DC motor, Stepper and DC Servo motors.K2
  3. CO3Evaluate the performance and characteristics of DC Machine as motor and as well as generator.K4
  4. CO4Evaluate the performance of transformers, individually and in parallel operation.K4
  5. CO5Demonstrate and perform various connections of three phase transformers. KL- Bloom’s Knowledge Level (K1, K2, K3, K4, K5, K6) K1 – Remember K2 – Understand K3 – Apply K4 – Analyze K5 – Evaluate K6 – CreateK3

Text Books

  1. IJ Nagrath & D.P. Kothari, "Electrical Machines", Tata McGraw Hill
  2. Rajendra Prasad , "Electrical Machines", PHI
  3. PS Bimbhra, "Electrical Machinery", Khanna Publisher
  4. AE Fitggerald, C. Kingsley Jr and Umans, "Electric Machinery", McGraw Hill, International Student Edition.

Reference Books

  1. H. Cotton, "Electrical Technology", CBS Publication.
  2. MG Say, "The Performance and Design of AC machines", Pit man& Sons.
  3. PS Bimbhra, " Generalized Theory.

Official AKTU syllabus

This subject is on page 14, 15 of the original AKTU PDF.

Official AKTU syllabus PDF ↗