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Topic: Re: spin maximizes the Ampere law that makes the Inert Gases Chapt13.4.03 Charge and spin #1023 New Physics #1143 ATOM TOTALITY 5th ed
Replies: 15   Last Post: Nov 27, 2012 5:25 PM

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Re: spin maximizes the Ampere law that makes the Inert Gases Chapt13.4.03
Charge and spin #1023 New Physics #1143 ATOM TOTALITY 5th ed

Posted: Nov 25, 2012 8:11 PM

On 25/11/2012 3:02 AM, Lord Androcles, Zeroth Earl of Medway wrote:>
such that the peak torque is near standstill.
>
> ======================================================
> Triacs should only be used when the load is resistive.
> At standstill (say you lock the shaft of a squirrel cage induction motor)
> one can view the stator as the primary of a transformer and the rotor
> as the secondary with a shorted turn. That is max torque. As the rotor
> accelerates the difference between the rotor RPM and field RPM of the
> stator (known as the slip frequency) gradually reduces to zero at
> synchronous speed and the torque vanishes, the motor is then just
> an inductive load like a transformer with no load on the secondary.
> I can't imagine why anyone would want a variable speed fan in a
> stove hood.

etc.

I have responded under Re: motor control as this is the direction
that the discussion has gone.
--
Don Kelly
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