What are the usege & different between UPS & batteries with charging system in in Substation?( UPS 120V AC & battery charger is 120v DC)

1 Answers  

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What is the meaning of loop in transformer

0 Answers   AST,

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What is the typical power circuit configuration of a VVVF Drive ?

1 Answers  

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how does a submersible pump work..?

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WHAT IS THE FAULT WHEN 100HP TURBINE MOTOR TRIPS, LIST THE FAULTS AND ITS TRABULESHOOTING TIPS.. MY AUTO TARNSFORMER STARTER TRIPS

0 Answers   MPS Techologies,

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What are the advantages and disadvantages of the dc motors?

0 Answers  

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if current required for triggering thyristor at -30 degrees(temp) is 80 mA, what is the current required at 60 degrees

1 Answers  

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Instead of single phase(220), if apply Phase to phase supply (eg: for lighting fixture). what will be the power formula? what will be the volt and current value? please explain me with some example.

1 Answers  

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what is function of reactor coil in Power factor correction panel

1 Answers  

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why are caluculte transformers or dg's in kva does not caluculate in kw

5 Answers  

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what material used made for the resistance,for the purpose of zero temperature coefficient?

2 Answers  

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how convert kvar to microfarade? circuit diagram of infrared transmiter and receiver? circuit diagram of Fm transmiter and receiver?

2 Answers  

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