i want to know how to calculate the battery capacity based on the UPS . ex i want to run have one kva UPS Which should run 10 hours ? in that case how many batteries to be installed and what will be the AH Value .

2 Answers  

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What is the deference between earth fault & earth leakage

1 Answers  

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if the load is reactive then what is the use of calculating the real power and what is the use of reactive power if my question is wrong please excuse me..

1 Answers  

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what could be the RMS value and average value of a 4 phase sine wave?

0 Answers   BARC,

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what is the difference between mho characteristics and quadrilateral chara in distance protection

1 Answers   Essar,

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what is need of air gap in expansion section in busbar?

3 Answers  

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What is mean by CT Saturate? how do we calculate?

5 Answers   ABC,

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What is the formula to calculate distribution transformer De-rating on iron losses basis

0 Answers   IESCO,

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Which is stiffer between salient pole rotor and cylindrical rotor synchronous machines? Justify your answer.

1 Answers  

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What accessories required to give the motor with given circuits and do you know the ratings of those accessories?

4 Answers   Hyundai, TCS,

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what is meant by vector group in transformers? wy we r using that?

1 Answers  

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george phenomenon of synchronous machine

0 Answers   JU,

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