UPS battery Back time = no.of Batteries * Ah of the Battery / output KVA * 130 ? what is the 130 means ? can any one help? because all are using this formula how its came 130?

2 Answers  

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what is the current setting for different relay protection for transformer .

0 Answers   Crompton Greaves,

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How reverse power relay sense the power is reverse in the system.

2 Answers  

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why nearly all voltages are in the multiples of 11?

5 Answers  

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what is the difference between multimeter and megger?

3 Answers   Bhel, Metro,

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why transformer calling in VA rating

6 Answers  

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pls send me some question and answer for rrb railway interviw related 2010

2 Answers   CEAT, RRB,

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if its possible for step up or step down DC volage directly ? possible means how we can do it ?

5 Answers  

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is there any phase difference occurs while primary and secondary side mutual induction occurs?

0 Answers  

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What is the Total Power generation Capacity in India at present ??

20 Answers   Bhel, College School Exams Tests, IBM, NTPC,

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If the battery is in charging condition means, battery is which type of load? Capacitive or Resistive load?

2 Answers   Crisp,

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ABOUT AC GENARETORS AND MAINTANANCE AND TYPES OF GENARETORS

1 Answers  

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