[AT] Generator--doing funny things

Sat Jun 17 05:01:16 PDT 2006

Thomas,  I guess what I didn't understand was the part about the speed a 
generator or motor being governed by the laws of physics.

Charlie
----- Original Message ----- 
From: "Thomas O. Mehrkam" <tomehrkam at houston.rr.com>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Friday, June 16, 2006 8:56 PM
Subject: Re: [AT] Generator--doing funny things

>I think you are saying the same thing he is.
>
> Clock motors have little load and are designed so there is no slippage.
>
> Motors have some slippage and run at a slightly slower speed.
>
> From another EE. This group is infested with then. :-}
>
> charlie hill wrote:
>> Will,  I guess I'm stupid to be arguing with an EE but I thought the RPM 
>> of electric generators was to control the frequency.  Most stuff runs at 
>> 60 HZ. 3600 rpm / 60 sec/min corresponds to 60 Hz in the case of a 2 pole 
>> generator.  Other wise our old style clocks wouldn't be right and our TV 
>> pictures would  look funny.   Am I wrong about that?
>>
>> Charlie
>>
>> ----- Original Message ----- From: <Bustedtractor at aol.com>
>> To: <at at lists.antique-tractor.com>
>> Sent: Friday, June 16, 2006 6:19 PM
>> Subject: Re: [AT] Generator--doing funny things
>>
>>
>>> The RPMs for a generator will usually be either 3600 or 1800. A 2-pole
>>> generator operates at 3600 RPMs, while a 4-pole generator will run at 
>>> 1800 RPMs.
>>> There is the possibility of a 6-pole unit in which case the RPMs would 
>>> be
>>> 1200. These RPM numbers are governed by the laws of physics and also 
>>> represent
>>> the nominal speeds that a electric motors will run at. The actual 
>>> operating
>>> speeds for motors are slightly less due to slip. Electric motors 
>>> typically run
>>> at 3450, 1725, and 1150 RPMs based on their design and  construction.
>>>
>>> I just retired from electrical engineering 2 weeks ago and now I have  a
>>> number of tractors that are begging for my full-time attention.
>>>
>>> Will in MN
>>>
>>> -------------------------------1150496391
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>>>
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>>> <META http-equiv=3DContent-Type content=3D"text/html; 
>>> charset=3DUS-ASCII">
>>> <META content=3D"MSHTML 6.00.2900.2912" name=3DGENERATOR></HEAD>
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>>> <DIV>The RPMs for a generator will usually be either 3600 or 1800. 
>>> A 2-=
>>> pole=20
>>> generator operates at 3600 RPMs, while a 4-pole generator will run 
>>> at 1=
>>> 800=20
>>> RPMs. There is the possibility of a 6-pole unit in which case the RPMs 
>>> would=
>>> be=20
>>> 1200. These RPM numbers are governed by the laws of physics and 
>>> also=20
>>> represent the nominal speeds that a electric motors will run at. The 
>>> actual=20
>>> operating speeds for motors are slightly less due to slip. Electric 
>>> motors=20
>>> typically run at 3450, 1725, and 1150 RPMs based on their design and=20
>>> construction.</DIV>
>>> <DIV> </DIV>
>>> <DIV>I just retired from electrical engineering 2 weeks ago and now 
>>> I h=
>>> ave=20
>>> a number of tractors that are begging for my full-time attention.</DIV>
>>> <DIV> </DIV>
>>> <DIV>Will in MN</DIV></FONT></BODY></HTML>
>>> _______________________________________________
>>> AT mailing list
>>> Remembering Our Friend Cecil Monson 11-4-2005
>>> http://www.antique-tractor.com/mailman/listinfo/at
>>>
>>>
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>>> No virus found in this incoming message.
>>> Checked by AVG Free Edition.
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>>>
>>>
>>
>>
>> _______________________________________________
>> AT mailing list
>> Remembering Our Friend Cecil Monson 11-4-2005
>> http://www.antique-tractor.com/mailman/listinfo/at
>>
>
>
> _______________________________________________
> AT mailing list
> Remembering Our Friend Cecil Monson 11-4-2005
> http://www.antique-tractor.com/mailman/listinfo/at
>
>
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