CHHATTISGARH SWAMI VIVEKANAND TECHNICAL UNIVERSITY, BHILAI (C. G.)
Semester: B.E. 4th Sem. Branch: Electronics & Telecom.
Subject: Electrical Machines
Unit-1 DC Machines
Construction of DC Machines, Generator action, EMF equations, Operating characteristics of DC
generators, Motor action, Development of torque equation, Operating characteristics of DC Motors,
Starting and speed control of DC Motors, Losses, Efficiency, Application.
Construction, Principle of operation, Transformation ratio, equivalent circuit diagram, phasor diagram,
efficiency, voltage regulation.
Three phase transformer, types, different connections of three phase transformer
Construction, Principle of operation, single phase & poly-phase winding pitch and distribution factor, emf
equation, phasor diagram, synchronous reactance & impedance, voltage regulation by synchronous
Unit-4 Phase Induction Motors
Construction, Principle of operation, wound rotor and squirrel cage type rotors, equivalent circuit diagram,
phasor diagram, torque-slip characteristics, Methods of starting & speed control of induction motors,
Unit-5 Synchronous Motor and Drives
Construction and principle of operation, phasor diagram, effect of excitation on power factor, synchronous
condenser, methods of starting of synchronous motors, construction and starting methods of single phase
induction motor, servo motor.
Name of the Text Books :
1. I.J. Nagrath and D.P. Kothari, “Electric Machines”, Tata McGraw Hill
2. B.L. Thareja, “Text Book of Electrical Technology Vol. II”, S. Chand Publication
Name of Reference Books :
1. P.S. Bhimra, “Electric Machinery”, Khanna Publications.
2. P.K. Mukherjee, S. Chakraortyi, “Electric Machinery”, Dhapat Rai Publications.