Electrical Machines

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ELECTRICAL MACHINES DI03041041
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Code: DI03041041 Credits: 3 Semester 3 Nano

Electrical Machines

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Electrical Machines Syllabus — Unit-wise Content

The official GTU curriculum for Electrical Machines (subject code DI03041041) as prescribed for Nano · Semester 3 divides the course into 6 units, covering 13 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 (DI03041041)

Unit 1 ENERGY CONVERSION PRINCIPLES

4 lecture hours

  • Law of conservation of energy 1.2
  • Role of electrical energy and uses 1.3. electro-mechanical energy conversion principles and devices 1.4
  • Condition of production of e.m.f. 1.5. singly excited and doubly excited field system

Unit 2 D.C. GENERATOR AND D.C. MOTOR

16 lecture hours

  • 2.1 Working principle of DC generator (Single loop generator
  • action of commutator) 2.2 Construction of DC generator 2.3 E.M.F. equation of DC generator 2.4 Types of DC generator 2.5 Power stage and Losses in DC generator 2.6 Condition for maximum efficiency 2.7 Applications of DC generator 2.8 Working principle of D.C. motor 2.9 Significance of the Back EMF 2.10 Voltage equation of DC motor 2.11 Types of DC motor 2.12 Torque in DC motor (Armature torque
  • Shaft torque and BHP) 2.13 Speed of DC motor 2.14 Power stage and Losses in DC motor 2.15 Applications of DC motor Program Name: Engineering Level: Diploma Branch: Automation & Robotics Course / Subject Code : DI03041041 Course / Subject Name : Electrical Machines 2.16 Comparison of DC generator and DC motor

Unit 3 TRANSFORMER

9 lecture hours

  • 3.1 Working principle of transformer
  • construction and types 3.2 Theory of an ideal transformer 3.3 E.M.F. equation of a transformer 3.4 Transformer with load and no load 3.5 Losses of transformer 3.6 Efficiency of transformer
  • condition for maximum efficiency 3.7 Voltage regulation and application of transformer

Unit 4 INDUCTION MOTOR

6 lecture hours

  • 4.1 Working principle of induction motor and its construction 4.2 Rotating field due to two phase and three phase supply 4.3 Torques and condition for maximum torque (Starting and running) 4.4 Effect of change in supply voltage on speed and torque 4.5 Power stage in induction motor

Unit 5 SYNCHRONOUS MOTOR

4 lecture hours

  • 5.1 Principle of synchronous motor and construction 5.2 Starting methods. 5.3 Effect of change in excitation 5.4 Applications

Unit 6 SPECIAL PURPOSE MACHINES

6 lecture hours

  • working of stepper motor 6.2 Working principle of Permanent magnet DC motor 6.3 Principle of brushless DC motor 6.4 Working principle of Servomotor 6.5 Working principle of synchros 6.6 Applications of Stepper
  • Servo motor and synchros

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