Electrician/ JE Course & Electrical Engineering Course

CONTENTS

Chapters Pages

Occupational Safety & Health………..................................................4

Basic Electrical Terms and Definition……………………………………………….………………………..……….4

Alternating Current (AC), Ammeter, Ampacity, Ampere-Hour (Ah), Ampere (A), Apparent Power, Armature, Capacitance, Capacitor, Circuit, Circuit Breaker, Conductor, Corona, Current (I), Cycle, Demand, Dielectric constant, Dielectric strength, Diode, Direct Current (DC), Electrolyte, Electromotive Force, Electron, Electron theory, Farad, Ferro resonance, Frequency, Fuse, Generator, Ground, Ground Fault Circuit Interrupters (GFCI), Henry, Hertz, Impedance Inductance Inductor, Insulator, Inverter, Kilowatt-hour (kWh), Kilowatt-hour Meter, Kilowatt (kW), Load, Load Rejection, Mutual Induction, Ohm, Ohm's Law, Ohmmeter, Open Circuit, Parallel Circuit, Piezoelectricity, Polarity, Power, Power Factor, Protective Relay, Reactive Power, Rectifier, Relay, Reluctance, Resistance, Resistor, Rotor, Self Induction, Semiconductor, Series-Parallel Circuit, Series Circuit, Service, Short Circuit, Solid State Circuit, Transistor, True Power, VARS, Variable Resistor, Volt-Ampere (VA), Volt (V), Voltage, Voltmeter, Watt-hour (Wh), Watt (W), Wattmeter, Waveform

Methods of Soldering Electronic Components………………………………….15

Required Tools for Soldering, Step by Step Soldering Method,Soldering Tip...15

Step by Step Soldering Process

DC Machine….……………………………………............................................…....19

Construction of DC Machin……………………………………………… ………….…19

E.M.F. Equation of the DC machine………………………………………….……….20

DC Machine Vs. AC Machine……………………………………………………….…….20

Active, Reactive and Apparent Power………………………………………..……...21

Electrical Earthing ,………………………………..……………………………………..…..21

RLC Series Circuit………………………………………………………………………………….…………..21

In the RLC Series circuit………………………………………………………………….…22

Tips and Tricks Engineer Zone

3

Three phase circuit, connections…………………………………………………..…..23

Star Connection……………………………………………………….……………………….23

Delta Connection……………………………………………………………………………..24

Electrical Transformer…………………………………………………………………..…………………24

Construction of an Electrical Transformer…………………………………………24

EMF Equation of an Electrical Transformer…………………………………….…25

Electrical Load………………………………………………………………………….……….26

Difference between Induction Motor and Synchronous Motor…..……..27

Eddy Current Loss…………………………………………………..………………………..28

Mathematical Expression for Eddy Current Loss………………………………..28

Difference between Relay and Contactor……………………………….……….….29

Instrument Transformers - CT and PT……………………………………………….…30

Resistors in Series and Parallel………………………………………....………………..32

Series and Parallel Capacitors…………………………………………………………….34