Industrial Electricity and Motor Controls
The electric power industry covers the generation, transmission, distribution and sale of electric power to the general public and industry
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| Industrial Electricity and Motor Controls |
Introduction
Performance Objectives 2
What Is Electricity? 2
Elements and Atoms 2
Free Electrons 3
Current Flow 3
Energy 3
Electrical Materials 3
Conductors 3
Insulators 3
Semiconductors 3
Generating Electricity 3
Voltage and Current 7
Resistance 8
Wire Size 9
Copper versus Aluminum Wire 9
Circuits 10
Ohm’s Law 12
Using Ohm’s Law 12
Power 13
Kilowatts 13
Measuring Electricity 13
Meters 13
Other Types of Meters 19
Controlling Electricity 20
Switches 20
Solenoids 23
Relays 24
Diodes 24
Resistors 25
Resistor Color Code 26
Review Questions 27
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