ELECTRICAL MACHINES 

Credits	Periods			Exam Hrs.	Sessional Marks	Exam Marks	Total Marks
	Theory	Tutorial	Lab
4	3	1	-	3	30	70	100

Basic Structure, Generation, Transmission, Distribution and Utilization of Electric1. Electric Energy System 
Power, Non – Conventional Energy Sources (Elementary treatment only).
2. DC Machines 
Constructional Features, Function of Commutator, Induced EMF and Torque
Expressions, Relationship Between Terminal Voltage and Induced EMF for
Generator and Motoring Action, Different Types of Excitation and Performance
Characteristics of Different Types of DC Machines, Starting and Speed Control of DC
Motors, Losses and Efficiency, Efficiency by Direct Loading, Swinburne’s Test and
Hopkin’s Test, Applications of DC Machines.
3. Transformers 
Constructional Details, EMF Equation, Equivalent Circuit, Voltage Regulation,
Losses and Efficiency, Auto – Transformers, Instrument Transformers, Open/Short –
Circuit Tests and Determination of Efficiency and Regulation.
4. Three – Phase Induction Machines 
Construction, Rotating Magnetic Field  and 3ph Induction Motor, Power Flow
Diagram, Torque and Torque-slip Characteristics, Condition for Max. Torque and its
Value, Starting and Speed Control, Losses and Efficiency, Equivalent Circuit and
Circle Diagram of Induction Motor, No – Load and Rotor  – Blocked Tests and
Efficiency and Torque - Speed Characteristics.
5. Three – Phase Synchronous Machines 
Generation of EMF, Constructional Details, Induced EMF, Synchronous Generator
on No – Load and Load, Synchronous Impedance and Voltage Regulation.
6. V – Curves and Inverted V – Curves,  Synchronous Condenser, Starting of
Synchronous Motors, Applications of Synchronous Machines.
7. Single – Phase Motors 
Double Revolving Field Theory, Methods of Starting Single Phase Induction Motors,
Universal Motor, Stepper Motor.

Text Books : 
1. Electrical Machines, S. K. Bhattacharya, TMH Publications N. Delhi.
2. A  First  Course  In  Electrical  Engineering,  S.  M.  Tiwari,  A.  S.  Binsaroor,
Wheeler Publications.