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  • Technical Theory

Wiring Tools

  1. Wrenches
  2. Taps
  3. Conduit Bending Tools
  4. Die and Die Stock
  5. Reamer
  6. Conduit Cutting by Hacksaw
  7. Conduit Pipe Cutter
  8. Bench Vice
  9. Plumb Bob
  10. Pipe Vice
  11. Files
  12. Blow Lamp
  13. Putty Knife
  14. Twist Drill
  15. Centre Punch
  16. Hacksaw
  17. Raw PlugTool
  18. Auger Bits
  19. Ratchet Bit Brace
  20. Hand Drill
  21. Scratch Awl
  22. Chisels
  23. Wooden Saw
  24. Hammers
  25. Pocket Knife
  26. Slip Joint Pliers
  27. Long Nose Pliers
  28. Diagonal Cutting Pliers
  29. Pliers
  30. Screw Drivers
  31. Wiring Tools

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Earthing System

  • Meaning of Earthing in Electricity
  • Why is Earthing Necessary
  • How Does Earthing Give Protection?
  • Why is Earthing So Important?
  • Components / Parts of Earthing System
  • Selection of Fuse Wire
  • Comparison of HRC Fuse and Circuit Breakers
  • Miniature Circuit Breaker
  • Selection of Fuse

Distribution Board

  • Distribution Board
  • Parts of Distribution Board
  • Preparing of Distribution Board

D.C. Motor

  • D.C. Motor
  • Principle of D.C. Motor
  • Working Principle of DC Motor
  • Commutator Action in a DC Motor
  • Back EMF of DC Motor
  • Driving and Retarding Torques, Back EMF
  • Types of DC Motor
  • Application of D.C. Motors
  • Losses in D.C. Motors
  • Direction of Rotation of DC Motor
  • Speed Control of DC Motor
  • Speed Control of DC Shunt Motors
  • Speed Control of DC Series Motors
  • Speed Regulation of DC Motor
  • Starters for DC Shunt and Compound Wound Motors
  • Testing of Dc Machines
  • Dynamometer Test
  • Detailed Dynamometer Description
  • Swinburne’s Test
  • Hopkinson Test
  • Safety While Working on Motor

D.C. Generator

  • Principle of D.C. Generator
  • Construction of Single Loop Generator
  • Working of DC Generator
  • Types of DC Generator
  • Types of DC Generator
  • Conditions for Self Excitation
  • Causes of Failure to Build Up Voltage
  • Types of D.C. Generator
  • Application of DC Generators
  • Characteristics of DC Generators
  • Characteristic of Separately Excited Dc Generator
  • Characteristics of Series DC Generator
  • Characteristic of Shunt DC Generator
  • Critical Field Resistance
  • Cumulative Compound Wound Generator Characteristics
  • Differential Compound Wound Generator Characteristics
  • Levels of Compounding a Compound Generator
  • Armature Reaction
  • Compensating Windings
  • Brush Shifting
  • Methods of Improving Commutation
  • Losses in D.C. Generators
  • Parallel Operation of D.C. Generators
  • Conditions for Parallel Operation of Two Generators
  • Procedure for Paralleling D.C. Generators
  • Load Sharing of DC Generator
  • Series Generators in Parallel
  • Parallel Operation of Shunt Generators
  • Parallel Operation of Compound Generator
  • Safety while Working on Generator
  • Voltage Build Up Process in D.C. Generator

Dc Machine Fundamentals

  • Faradays Laws of Electro-Magnetic Induction
  • Explanation of Faraday’s Work
  • Lenz’s Law
  • Fleming’s Right Hand Rule
  • Nature of Induced E.M.F
  • Force on a Current Carrying Kept in Magnetic Field
  • D.C. Machine
  • Stator
  • Rotor
  • Armature Winding
  • Single-layer Winding
  • Two-layer Winding
  • Degree of Re-Entrant of an Armature Winding
  • Multiplex Winding
  • Lap Winding
  • Wave Winding
  • Simplex Lap-winding
  • Simplex Wave Winding
  • Comparison Between Lap Winding and Wave Winding
  • Uses of Lap and Wave Windings

Electric Cables

  • Tinning
  • Choice of Cable
  • Classification of Cables w.r.t Insulation
  • Types of cable W.R.T core
  • Voltage Grading of cable
  • Current Carrying Capacity of a Cable
  • Size of Cable for a Given Load

Protective Devices for House Wiring

  • Types of Circuit Breakers
  • Types of Fuses
  • Types of Protective Devices for House Wiring
  • Advantages and Disadvantages of Fuse
  • Advantages and Disadvantages of Miniature Circuit Breakers
  • Points To Remember While Providing Earthing
  • Example of Design of an Earthing System
  • Installation with High Resistance of Earth
  • Earth Continuity Conductor
  • Determination of Size of Earth Wire And Earth Plate for Domestic And Motor Installations
  • Material Required For GI Pipe Earthing
  • Specifications of Earth Wire and Earth Plate
  • Functions of Earthing
  • What Points are To Be Connected To Earth?
  • Earth Resistance Value
  • Multiple Earthing System

Accessories and Tools for Wiring

  • Electric Switch
  • One-Way Switch
  • Two Way Switch
  • Intermediate Switch
  • Push Button Switch
  • Main Switch
  • Ceiling Switch
  • Tumbler Switch
  • Double-Pole Iron Clad Switch
  • Three-Pole Iron Clad Switch
  • Ceiling Rose
  • Sockets
  • Lamp Holders
  • Panel Board
  • Switch Board
  • Ammeter
  • Watt Meter
  • Volt Meter
  • Watt Hour Meter
  • Fuse
  • Circuit Breaker

Wiring System

  • Choice of Wiring System
  • Types of Wiring System
  • Cleat Wiring System
  • Method of Cleat Wiring Installation
  • Advantages and Disadvantages of Cleat Wiring
  • Precautions of Cleat Wiring
  • Materials and Tools of Cleat Wiring
  • Batten Wiring System
  • Method of Batten Wiring Installation
  • Advantages and Disadvantages of Batten Wiring
  • Precautions of Batten Wiring
  • Materials and Tools of Batten Wiring
  • Casing Capping Wiring System
  • Casing Capping Wiring Installation Method
  • Advantages and Disadvantages of Casing Capping Wiring
  • Precautions of Casing CappingWiring
  • Conduit Wiring System
  • Types of Conduit Wiring
  • Conduit Wiring Installation Method
  • Advantages and Disadvantages of Conduit Wiring
  • Surface Conduit Wiring Materials and Tools
  • Uses of Conduit Wiring
  • Precautions of Conduit Wiring
  • Concealed Conduit Wiring Installation Method
  • Advantages and Disadvantages of Concealed Conduit Wiring
  • Concealed Conduit Wiring Materials and Tools
  • Precautions of Concealed Conduit Wiring
  • Uses of Concealed Conduit Wiring
  • Flexible Conduit
  • Jointing Method
  • Looping in System
  • Electricity Rules about Domestic Wiring

Cell and Batteries

  • D.C. Batteries
  • Production of E.M.F. By Chemical Action
  • Classification of Cells
  • Construction of Nickel Iron Cell
  • Characteristics of Nickel Iron Cell
  • Nickel-Cadmium Batteries
  • Lead Acid Battery
  • Construction of Lead Acid Battery
  • Chemical Action of Lead Acid Battery
  • Charging of Lead Acid Battery
  • Electrical Characteristics of Lead Acid Battery
  • Applications of Lead Acid Batteries
  • Maintenance and Care of Lead Acid Batteries
  • Capacity-Rating of a Lead Acid Accumulator
  • Affective Capacity of a Lead Acid Battery
  • Battery Containers and Covers
  • Efficiency of an Accumulator
  • Efficiency of Cell or Battery
  • Series and Parallel Connection of Batteries or Cell
  • Sketch of Nickel Iron Cell

Wiring Test

  • Megger Testing Instruments
  • Test Lamp Testing Instruments
  • Continuity Tester Testing Instruments
  • A.V.O Meter
  • Polarity Wiring Test
  • Continuity Wiring Test
  • Continuity Wiring Test for Earth Connection
  • Short Circuit Test
  • Insulation Test

Jointing and Soldering

  • Cable Joints and it Types
  • Soldering
  • Method of Soldering
  • Precautions for Soldering
  • Precautions for Jointing

Industrial and Commercial Wiring System

  • Industrial and Commercial Wiring System
  • Conduit Wiring System
  • Uses of Conduit Wiring
  • Trunking Wiring System
  • Skirting Trunking
  • Non-Metallic Trunking
  • Installation of Trunking
  • Advantages and Disadvantages of Trunking Wring System
  • Uses of Trunking Wiring System
  • Ducting Wiring System
  • Installation Method of Ducting Wiring System
  • Uses of Ducting Wiring System
  • Catenary Wiring System
  • Uses of Catenary Wiring System
  • Overhead Bus-Bar System
  • Bus Bar System for Rising Mains
  • Tough Sheathed Cable System

Cables

  • Current Carrying Capacity of Cables
  • Meaning of Wire and Cables
  • Parts of Cable
  • Classification of Cables
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