what is the formula to find battery back up of ups?

3 Answers  

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What is the numerical quantity of sqcm?

0 Answers  

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Why we are testing a tan delta test in transformer? which purpose conduting that test? and time priode test?

1 Answers  

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What are the specifications for getting approval of Substation?

0 Answers  

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diesel generator not getting start so whats problems will happen to DG and how we can start DG

1 Answers   Lodha,

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how to find out this one mcb r mccb?

4 Answers   L&T,

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Is it weather conditions make any problems to the electrical equipments and if yes means is it any precautions needed?

1 Answers   Hexaware,

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Why we should not parallel the with EB

1 Answers  

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i need to calculate high voltage line power factor daily basics but there is meter reading kwh and kvah while calculating power factor kwh/kvah formula was right. for examble there is point c=13kwh c=1.8 lag c=1.2 lead and c=14.5kvah like that i know that p.f =kwh/kvah but c=1.8lag kvarh and c=1.2lead kvarh points i dont know if u know please reply

1 Answers  

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PLease anyone can tell me CTUM-15 specification?

1 Answers   Gilbert Maxwell,

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What will happen if power transformer designed for 50 Hz is connected to 500 Hz of the same voltage , and vice versa ?

1 Answers  

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name the types of insulatter?

5 Answers  

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