What are the main differences between AC and DC power?

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Discussion Overview

The discussion focuses on the differences between alternating current (AC) and direct current (DC), including their production methods, advantages, and disadvantages. Participants also touch on related topics such as synchronous motors.

Discussion Character

  • Debate/contested, Homework-related

Main Points Raised

  • Some participants suggest that the fundamental difference between AC and DC is that direct current has constant polarity, while alternating current does not.
  • One participant mentions that there are many ways to produce both AC and DC, but providing an exhaustive list may not be useful.
  • Another participant inquires about the advantages and disadvantages of AC and DC, indicating a need for comparative analysis.
  • A participant expresses uncertainty about the efficiency of AC versus DC and mentions the ability to change voltage more easily with one of them, but does not specify which.
  • There are requests for assistance in finding information about synchronous motors, indicating a related area of interest.
  • One participant suggests using search engines for information on synchronous motors, while another expresses frustration at not finding satisfactory explanations online.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the differences between AC and DC, as various viewpoints and questions remain unresolved. The discussion includes both requests for information and challenges regarding homework-related inquiries.

Contextual Notes

Some claims about efficiency and voltage changeability are not substantiated with specific details or comparisons. The discussion also reflects a lack of clarity on the workings of synchronous motors, with participants expressing difficulty in finding comprehensive resources.

alanveron
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total there are how many differences between ac and dc??and ways to produce them
 
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There's only one fundamental difference: direct current has constant polarity, while alternating current doesn't.

There are many, many different ways to "produce" either kind of current. Trying to provide an exhaustive list would be rather pointless.

- Warren
 
thanks chroot admin,what's the advantages and disadvantages between these two?
 
Sounds like you're looking for answers to a homework question. We're not going to do your homework for you. Maybe you should try to do your own research? You'd learn more in the process.

- Warren
 
i think one is more efficient and you can change voltage easier but i can have a look if i can find it in my book... later
how do you open one question thing
caus i need to find out about synchronous motor and i can't find anything in the net...
 
blubb said:
caus i need to find out about synchronous motor and i can't find anything in the net...
Just go to google.com and type synchronous motor into the search box and hit Enter. You'll get lots of useful hits. If you are looking for some particular information within the overall subject of synchronous motors, just add those keywords into your search.
 
tried it already and also wikipedia. But they are not explaining how it actually works! but thanks anyway!
 

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