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Re: superposition



Yes, the area under a closed hysteresis loop is a measure of the "iron
loss". Generally engineers design e-m devices so the iron and copper
losses are equal.


About non linearity one might point out to students that sight and
hearing are VERY nonlinear. Doubling sound intensity won't double the
"loudness". Likewise with sight.

bc

James R. Frysinger wrote:

I'm working with old memories here, but isn't that because of the hysteresis
effects (--> magnetization curve, etc.) resulting in these being a case of
non-conservative force fields?

Jim

On Thursday, 2004 February 26 12:01, Ludwik Kowalski wrote:


The same objection can then be made for the
example of two coils on an iron rod. Right?

One coil alone produces B1 (in the iron rode
they share) and another coil alone produces
B2. Acting together they produce B < B1+B2.
In my mind this is a good example in which
the superposition principle does not apply.
Ludwik Kowalski


....
--

James R. Frysinger
Lifetime Certified Advanced Metrication Specialist
Senior Member, IEEE

http://www.cofc.edu/~frysingj
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j.frysinger@ieee.org

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