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Power electronics question I

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youda.chen886

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A.jpg

The above question is a bit tricky for me, could anybody do me a favor?
 

Ratch

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youda.chen886,

The above question is a bit tricky for me, could anybody do me a favor?
Those questions look fairly straight forward. What is "tricky" about them?

Ratch
 

Gimlix

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It's quite simple, you use Ohm's law (V=I*R, P=I*V). The only thing you must care is you need to work with complex numbers. Put all the data into the same notation and the operate, is more a mathematics problem than electronics.
 

youda.chen886

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It's quite simple, you use Ohm's law (V=I*R, P=I*V). The only thing you must care is you need to work with complex numbers. Put all the data into the same notation and the operate, is more a mathematics problem than electronics.
Okay~ I got it.
but what about this one?
B.jpg
Delta-Y connection is more complicated than you can imagine.
Give me some pointers
 

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