Answer / mayadhar81

Ups is untruppted power supply means Power is continuous
come from this ups if your main power suppy is on or off.

And then inverter is working after power supply is
gone.then invertor is on .

Answer / dipak thumar

Inverter is a part of UPS. in inverter DC supply is fed
through Battery and Battery is continuously charged through
Rectifier circuit from AC supply. in cace of AC supply is
available, inverter gets DC from Rectifier circuit and when
AC fails, it takes from battery.

how we control automatic generator i'e with to supply (main supply and local generator) when the main supply was break to supply the local supply automatically to begin supplying power.I now this control circuit is the combination of contactor time delay contactor switch and overload relay .but my question is how we combine those component thank you

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tan delta equation test on alternators

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flurescent bulb rating is to 230v,50HZ.now flurescent connected 230v,25HZ.whether nreduced frequency will affect the glowing properties of flurescent.

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hi,every one, i have to write the search paper on "performance policy optimization" of NGN (next generation networks). i need the material on this topic. can any body help me. please tell me any useful site where the good material is available and name of any reference book. it should be a great help for me.

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what are pilot cells

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In generating stations which we generate current or voltage if it is voltage then how it will convert to current and power?

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Full form of bdv test?

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