why we not connect the 12 V batteries in parallel to get the more backup supply for an UPS ? wheter off line or on line UPS ?

2 Answers  

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why tan delta test is carried out in the power transformer? which parameter are measure?

1 Answers  

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what is zero sequence curr ent ?

4 Answers  

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which model T or pie model is prefarable in power syatem

0 Answers  

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Which companies are into the project management of construction of power transmission line?

2 Answers  

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which on of the transformer have more core losses and why? 1. Distribution Transformer 2. Power Transformer

5 Answers  

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Write the force balance equation of ideal dashpot element.

0 Answers  

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Please clarify, 1. Is it required to lay two runs of GI wire along with Armoured LT cable if it is laid between one big mains (63Amps TPN SDF) to small main (32A TPN SDF) with proper glanding termination? 2. If the armoured cable with proper glanding is laid from DB to CNC machine, is it required to run two runs of body earthing to the Machine from DB? 3.If the armoured cable with proper glanding is laid from Substation to Hangar, distance is approx. 100 mtrs, is it required to do earthing at shop area though the primary termination at substation is earthed through gland.

0 Answers   HAL,

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what is rotating transformer? what is the uses of it?i mean applicaitons?

5 Answers   First Lead,

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What is partial discharge in power cable?

1 Answers  

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WHY THE +VE POLARITY OF 48V DC POWER SUPPLY IS USUALLY GROUNDED?

1 Answers   Tulip,

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Explain what is clipper and clamper circuits?

0 Answers  

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