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The windings heat up due to I2R power losses and the iron cores heat up due to induced eddy current losses.

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Q: Why is it frequently necessary to ventilate alternators by blowing air through them?
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Related questions

Why do cars keep blowing alternators after alternators?

http://www.techsupportforum.com/archive/index.php/t-57498.html


What will happen if you do not ventilate your boat after fueling?

You have a high risk of blowing up you boat.


Why does your 04 Toyota road runner keep blowing alternators?

Spike in electrical system look for loose ground wire or loose connection that is building excessive resistance (heat)


Why would the fuse for the AC fan keep blowing in a 95 Ford Contour?

Hey C==The blower motor probably is dragging causing it to use excessive amps hence blowing the fuse. Replace it. Go to a parts store and have the alternator checked out. New alternators go bad just like old ones do. GoodluckJoe


Why does your car keep blowing alternators?

Can be because of a bad battery, or overloading the charging system with extra accessories (like aftermarket stereos), or jump starting either that car or other cars with that car. If none of the above there may be a short or other electrical problem. Sometimes vehicles just have bad designed alternators that don't live long, or the rebuilders don't replace enough of the components to successfully give you a good part. Try a new not rebuilt part if you can and see if that doesn't work better.


Is blowing a noun?

No, blowing is not a noun. It is a verb.


Can you hook up two Alternators to one Battery without blowing your electrical system?

Theoretically, you could hook up two alternators to one battery without blowing your electrical system, but it would be very costly and not very effective, and yes, it could blow up your electrical system. Due to the way diodes in parallel "auctioneer", which means that only the one with higher voltage will conduct, only one alternator would be supplying current at a time. That would not double the power capacity of the two alternators unless you had a load balancer and, at the level of currents involved, this is not trivial. Also, the electrical system itself is designed for a certain maximum capacity. Attempting to pull more current from the battery, or transfer more current to the load, could well damage things, blow fuses, or even cause a fire. It is better to have two independent systems, with proper distribution of load between them. Besides, the mechanical work to even install two alternators is daunting, and you also have to consider the physical loads on the drive system. The bottom line is no. The entire system is designed for a certain capacity, and making changes to only one part is poor engineering.


What is the past continuous of blowing?

Was/Were blowing.


Why is my Air conditioner on but not blowing?

You mean the outside unit is running and blowing but the inside unit is not blowing? Shut it off! Who ain't blowing? Elaborate please..


Why do they call the new hair dryer volcano?

It's for blowing your top.


What tells you how fast the is blowing the wind is blowing?

An anemometer


Is blowing an adjective?

Blowing is a noun.