Elements of Electrical Engineering

Instruction: 3 Periods & 1 Tut /week

Univ. Exam : 3 Hours

Sessional Marks: 30

Univ-Exam-Marks:70

Magnetic circuits: Definitions of magnetic circuit, Reluctance, Magneto-motive force), magnetic flux, Simple problems on magnetic circuits, Hysterisis loss.

Electromagnetic Induction : Faraday’s laws of Electromagnetic Induction, Induced E.M.F., Dynamically induced E.M.F., Statistically induced EMF, Self Inductance, Mutual Inductance.

D.C. Generators: D.C.Generator principle, construction of D.C. generator, E.M.F equation of D.C. generator, Types of D.C. generator, Efficiency, Characteristics of D.C. generator, Efficiency, Applications of D.C. generator

D.C. Motors: D.C. Motor principle, working of D.C.Motors. significance of back E.M.F., Torque equation of D.C. Motors, Types of D.C. Motors, Characteristics of D.C. Motors, Speed control methods of D.C. Motors, Applications of D.C. Motor. Testing of D.C. Machines : Losses and Efficiency, Direct load test and Swinburne’s test.

A.C. Circuits: Introduction to Steady State Analysis of A.C. Circuits, Single and Balanced 3 Phase Circuits.

Transformers: Transformer principle, EMF equation of transformer, Transformer on load, Equivalent circuit of Transformer, Voltage regulation of Transformer, Losses in a Transformer, Calculation of Efficiency and Regulation by Open circuit and Short circuit Tests.

Three phase Inductance Motor: Induction Motor working principle. Construction of 3 Phase induction Motor, Principle of operation. Types of 3 phase induction Motor., Torque Equation of Induction Motor., slip – Torque characteristics., Starting Torque, Torque under running condition., Maximum Torque Equation., Power stages of Induction Motor., Efficiency Calculation of Induction Motor by direct loading.

Alternator: Alternator working principle, EMF equation of Alternator, Voltage Regulation by Sync. Impedance method.

Synchronous Motor: Synchronous Motor principle of Operation, Construction., Methods of starting of synchronous motor

Text Book:

"Elements of Electrical Engineering and Electronics" by V.K.Mehta, S. Chand & Co

Reference Book:

"A First Course in Electrical Engineering" by Kothari.