January 2013
Intermediate to advanced
598 pages
22h 47m
English
Content preview from Electrical Technology, Volume 1
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19
Work, Power and Energy
OBJECTIVES
In this chapter you will learn about:
- The definitions of work, power, and energy
- Work done by an electric current
- Electric heating
- Methods of heating rooms
- Types of electric heaters
- Power in a resistance – (d.c.)
- Power in a.c. circuits
- Three-phase power
- Active and reactive power
- Kinetic and potential energy
Energy conversion
19.1 INTRODUCTION
Electrical machines and appliances save a great deal of manual labour. They do the laundry, wash the dishes, transport people, provide light, supply information on call and entertain us. Time is money. The time that machines save us can be used for more pleasant, ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.