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#### Al Lamke

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75KVA transformer--90 amps--.16 ohms What is the power loss?

A. 1000 watts
B. 1200 watts
c. 1400 watts
d. 1600 watts

Thanks Al

#### MDShunk

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Just using P=I2 R, I come up with 1296 watts. I'm not sure that the 75kva rating of the transformer is especially relevant. I think there's something missing in your question to get one of the listed answers.

#### Al Lamke

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trans question.

Reading mike Holt's book--Power loss =I2xR. All transformers 95-97% efficient. Power =90x90x.16x.95=1231 watts probable ans. B. 1200 watts Thanks Al

#### frank

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Just to keep in mind that there are other factors that induce losses not included in the above equation. But for all practical purposes it is good enough for most purposes. Eddy current core losses etc and such cause problems for engineers but for us folks we need not concern ourselves too much.

Frank

#### Zog

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75KVA transformer--90 amps--.16 ohms What is the power loss?

A. 1000 watts
B. 1200 watts
c. 1400 watts
d. 1600 watts