Wednesday, March 4, 2009

5 march 2009

Q1. Give an example where a transformer is used in a dc application?
A1. Inverters produce AC power by switching or chopping polarity of DC input source to produce pulsating AC output. Transformers used in inverter circuits are called inverter transformers. Inverters used in applications where DC power is readily available.
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Q2.What is the problem with a fan that does not rotate unless rotated manually to start?
A2.Couldn't find an answer...still searching.
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Q3.Which is more dangerous - shock due to ac or dc?
A3.still searching an answer..
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done for the day....

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