**D.C. NETWORKS**

Current Electricity Basic Concepts

Definitions of Important Tenns Relating Network

Applications of Kirchhoffs Law

Solving Equations by Determinants Cramer

Maximum Power Transfer Theorem

**SINGLE PHASE A.C. CIRCUITS**

Introduction to Alternating Current

Generation and Equation of Altering Voltages and Currents

Alternating Voltage and Current

General Aspects in Single Phase

**THREE PHASE A.C. CIRCUITS**

Introduction Three Phase A C Circuits

Advantages of Polyphase Systems

Generation of Three Phase Voltages

Phase Sequence and Numbering Of Phases

Inter connection of three phases

Comparison between Star and Delta Systems

Measurement of Power in 3 Phase Circuit

Measurement of Reactive Volt Amperes

Unbalanced Star Connected Load

Unbalanced Delta Connected Load

**ELECTROMAGNETISM**

Terms Connected With Magnetic Material

Classification of Magnetic Materials

Magnetic Field Due To Current Carrying Conductor

Magnetic Flux and Flux Density

Magnetomotive Force and Magnetic Field Strength

Force On a Current Carrying Conductor Lying In a Magnetic Field

Magnetizing Force of a Long Straight Conductor

Magnetizing Force of a Long Solenoid

Terms Connected With Magnetic Circuit

Comparison of Electric and Magnetic Circuits

Faradays Laws of Electromagnetic Induction

**TRANSFORMERS**

Basic Definitions Transformers

Working Principle of a Transformer

Transformer Windings Terminals Tapping and Bushings

Theoretical Questions Transformers

**Single phase Transformer**

Elementary Theory of Ideal Transformer

E M F Equation of a Transformer

Voltage Transformation Ratio K

Transformer with Losses but No Magnetic Leakage

Resistance and Magnetic Leakage

Transformer with Resistance and Leakage Reactance

Equivalent Resistance and Reactance

Total Voltage Drop in a Transformer

Percentage Resistance and Reactance

**POLYPHASE INDUCTION MOTORS**

General Aspects Polyphase Induction Motors

Production of Rotating Magnetic Field

Theory of Operation of an Induction Motor

Effect of Change in Supply Voltage on Starting Torque

Effect of Change in Supply Voltage on Torque and Slip

Torque Slip and Torque Speed Curves

Operating Characteristics 3 Phase Squirrel Cage Induction Motor

Shows a Wound Rotor Induction Motor with Controller Rheostat

Power Stages in an Induction Motor

Induction Motor as Transformer

Equivalent Circuit of an Induction Motor

Factors Governing Performance of Induction Motors

Effects of Operating Conditions

Ratings of 3 Phase Induction Motors

Squirrel Cage Motors Advantages Disadvantages and Applications

Wound Rotor or Slip Ring Induction Motors Advantages Disadvantages and Applications

Comparison of a Squirrel Cage and a Slip Ring or Phase Wound

Comparison Induction Synchronous Motors

Highlights in Polyphase Induction Motors

**SINGLE PHASE MOTORS**

Repulsion Start Induction Motor

Single Phase Synchronous Motors

**DIRECT CURRENT (D.C.) MACHINES**

Characteristics of D C Generators

Applications of D C Generators

Losses and Efficiency of DC Machines

**MEASURING INSTRUMENTS**

Moving Iron Instruments Ammeters and Voltmeters

**POWER SUPPLY SYSTEM**