# Electrical

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## Details

Contents
1. Introduction to Electric Power System and A.C. Supply
1 Introduction
1.1 Typical A.C. Power Supply Scheme
1.2 Generating Station
1.3 Supply System
1.4 Various Systems of Power Transmission
2. Electricity
2.1 Concept of E. M. F
2.2 Concept of Potential Difference
2.3 Concept of Current
2.4 Resistance
2.5 Ohm’s Law
2.6 Series Circuit
2.7 Parallel Circuit
3. A.C. Fundamentals
3.1 Alternating current
3.2 Generation of Alternating Current and Voltage
3.3 Graphical Representation of Voltage and Current
Solved example
3.4 A.C. Through Pure Resistance
3.5 A.C. Through Pure Inductance
3.6 A.C. Through Pure Capacitor
Solved Examples
3.7 A.C. Series Circuit
Solved Examples
4. Three Phase Supply
4.1 Star Connection
4.2 Delta Connection
Solved Examples
2. Measuring Instruments
1. Introduction
1.1 Classification of Measuring Instruments
2. Different Torques and Arrangements of Torque Producing Systems
2.1 Methods of Controlling Torque
2.2 Methods of Damping Torque
3. Permanent Magnet Moving Coil Instrument (PMMC)
4. Torque Equation
5. Moving Iron Instruments
6. Wattmeter
6.1 Electro-dynamic Wattmeter
7. Energy Meter
7.1 Essential Characteristics of Energy Meter
7.2 Construction
8. Digital Multi Meter
8.1 Important Specifications of DMM
8.2 Basic Block Diagram of DMM
9. Clip on Meter
3. D.C. Machines
1. Introduction
2. Cross Rule and Dot Rule
3. Fleming’s Left Hand Rule
4. Fleming’s Right Hand Rule
5. Basic Requirements of D.C. Generator
6. Parts of the D.C. Machine
7. E.M.F. Equation of a D.C. Machine
8. Torque Equation of D.C. Motor
4. Transformer
1. Introduction
2. Working Principle of Transformer
3. Types of Transformer
4. E.M.F. Equation of a Transformer
5. Voltage and Current Ratio
6. Efficiency of Transformer
7. Auto Transformer
5. AC Motors
1. Introduction
2. Three Phase Induction Motor
2.1 Construction of Three Phase Induction Motor
2.2 Working Principle of Three Phase Induction Motor
2.3 Starting Torque
2.4 Starters for Three Phase Induction Motor
2.5 Starters for Squirrel-Cage Induction Motor
Solved Examples
3. Single Phase Induction Motor
3.1 Making Single Phase Induction Motor Self Starting
3.2 Types of Single Phase Motors
4. Alternator
5. Compare AC and DC Motors
6. Utilization of Electrical Energy
1. Introduction
1.1 Types of Drives
1.2 Factors for Selection of Motors for Different drives
1.3 Types of Enclosures
2. Electric Heating and Welding
2.1 Heating
2.2 Electric Welding
3. Electrometallurgical and Electro Agro System
3.1 Electroplating
3.3 Electrical Machines Used in Electro-Agro Systems
7. Electric Wiring, Illumination, Electric Safety, Tariff and Power Conservation
1. Introduction
2. Switch
2.1 Different Symbols used in Electrical Wiring
2.2 Electrical Installations
2.3 Control of One Lamp from One Switch
2.4 Control of Two or More Lamps by Individual Switches
2.5 Control of One Lamp by Two Switches
2.6 General Domestic Wiring
2.7 Fuses
3. Introduction to Different Accessories
3.1 MCB (Miniature Circuit Breaker)
3.2 ELCB (Earth Leakage Circuit Breaker)
3.3 Wire
3.4 Cables
4. Fluorescent Lamp
4.1 CFL (Compact Fluorescent Lamp)
4.2 LED (Light - Emitting Diode) Lamp
5. Energy Conservation
5.1 The Energy Conservation Act
5.2 Energy Audit
5.3 Methods of Energy Conversation
6. Earthing of Electrical Equipments
6.1 Necessity of Earthing
6.2 Types of Earthing
6.3 Safety Tools
6.4 Safety Precautions
6.5 First Aid Measures
7. Tariff
7.1 Objective of Tariff
7.2 Types of Tariffs
7.3 Power Factor
8. Methods of Extinguishing Fires
9. Troubleshooting in Electrical Installations and Machines

• Phase Diploma

• Stream Engineering

• Branch Mechanical

• Standard/Year Secondyear

• Semester Iv

• Medium English

• Board/University Pune

• Subject Electrical

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