EE3303 ELECTRICAL MACHINES 1 Study Materials
Anna University – EE3303 ELECTRICAL MACHINES 1 Regulation 2021 Syllabus, Notes, Important Questions, Question Paper with Answers, Previous Year Question Paper.
UNIT I ELECTROMECHANICAL ENERGY CONVERSION EE3303 ELECTRICAL MACHINES 1 Syllabus 2021
Fundamentals of Magnetic circuits- Statically and dynamically induced EMF – Principle of
electromechanical energy conversion forces and torque in magnetic field systems- energy balance in
magnetic circuits- magnetic force- co-energy in singly excited and multi excited magnetic field system
mmf of distributed windings – Winding Inductances-, magnetic fields in rotating machines- magnetic
saturation and leakage fluxes. Introduction to Indian Standard Specifications (ISS) – Role and
significance in testing.
UNIT II DC GENERATORS EE3303 ELECTRICAL MACHINES 1 Notes 2021
Principle of operation, constructional details, armature windings and its types, EMF equation, wave
shape of induced emf, armature reaction, demagnetizing and cross magnetizing Ampere turns,
compensating winding, commutation, methods of improving commutation, interpoles, OCC and load
characteristics of different types of DC Generators. Parallel operation of DC Generators, equalizing
connections- applications of DC Generators.
UNIT III DC MOTORS EE3303 ELECTRICAL MACHINES 1 Important Questions 2021
Principle of operation, significance of back emf, torque equations and power developed by armature,
speed control of DC motors, starting methods of DC motors, load characteristics of DC motors, losses
and efficiency in DC machine, condition for maximum efficiency. Testing of DC Machines: Brake test,
Swinburne’s test, Hopkinson’s test, Field test, Retardation test, Separation of core losses-applications
of DC motors.
UNIT IV SINGLE PHASE TRANSFORMER EE3303 ELECTRICAL MACHINES 1 Question Bank 2021
Construction and principle of operation, equivalent circuit, phasor diagrams, testing – polarity test,
open circuit and short circuit tests, voltage regulation, losses and efficiency, all day efficiency, back-toback
test, separation of core losses, parallel operation of single-phase transformers, applications of
single-phase transformer.
UNIT V AUTOTRANSFORMER AND THREE PHASE TRANSFORMER EE3303 ELECTRICAL MACHINES 1 Question paper 2021
Construction and working of auto transformer, comparison with two winding transformers, applications
of autotransformer. Three Phase Transformer- Construction, types of connections and their
comparative features, Scott connection, applications of Scott connection.
| Syllabus | Click Here |
| Notes | Click Here |
| Important Questions | Click Here |
| Previous Year Question Paper | Click Here |
| Question Bank | Click Here |
TEXT BOOKS EE3303 ELECTRICAL MACHINES 1
1. I. J. Nagrath and D. P. Kothari, “Electric Machines”, McGraw Hill Education, 5th Edition, 2017.
2. P. S. Bimbhra, “Electric Machinery”, Khanna Publishers, 2nd Edition, 2021.
REFERENCES EE3303 ELECTRICAL MACHINES 1
1. A. E. Fitzgerald and C. Kingsley, “Electric Machinery”, New York, McGraw Hill Education, 6th
Edition 2017.
2. A. E. Clayton and N. N. Hancock, “Performance and design of DC machines”, CBS Publishers,
2018.
3. M. G. Say, “Performance and design of AC machines”, CBS Publishers, First Edition 2008.
4. Sahdev S. K. “Electrical Machines”, Cambridge University Press, 2018.
Related Links
Anna University Syllabus Regulation 2021
Anna University Regulation 2021 Study Materials