what is the difference between delta delta and star delta connection transformer? why we use delta delta transformer since it need earthing transformer for grounding?

0 Answers  

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Sir if i have 2kv ups in which 17ah 8 battries load 600watts how much back up time i get and if i put 6kv ups with the same no of battries same amp can i get more back up time please give reply exactly what is the procedure to calculate back up time for different kv,s

3 Answers  

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how the inductor will work on dc supply?whether it will work or not?

11 Answers   NTPC,

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why the electrical plug point pin(earth) size in max

1 Answers   Autoneum Nittoku, Bajaj,

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specify the inbuilt protections in DG

0 Answers  

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In ups static switch if i gives the supply at output end it will open the circuit in stactic switch or not if it will open then how it operates.

0 Answers  

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which type of winding is used for high voltage & low current?

1 Answers   GEB,

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any body,pls tell me how to done relay coordination ? how to coordinate by TCC curve?how to read the tcc curve?

0 Answers  

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why we have to do tan delta test of the transformer oil???

5 Answers  

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What is use of reactor..how it is help ful in electrical system .....brief explain

1 Answers  

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up to what extwnt of voltage the celing fan works?

3 Answers   ICSA,

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what about GD square and its important for motor design?

0 Answers   Innovis, MNC,

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