what is the ambient temperature of transformer oil & winding?

2 Answers   Reddy Labs,

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HOW TO CALCULATE UPS BATTERY BACKUP TIME

3 Answers   HSBC, VRVS,

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Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient?

0 Answers  

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what is priming pump?why it is used ?

2 Answers  

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one KVAR takes how much amps, and how to add power capacitors to electrical panels, for example if one of the MCC drawn 800amps means how much KVAR required

1 Answers  

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In case of motor Power Factor Generally We Apply A Capacitor But How Can We Know That A Motor is Running On Very low Power Factor And What Rating Of Capacitor We Have To Place And Tell Me Conversion Of Micro Farad to KVAR>

2 Answers  

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why restricted earth fault protection can not operate for phase faults??as there will be a current in secondary of ct,when a phase fault occurs!

1 Answers   GMR,

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difference between semiconductor & conductor & insulator?

0 Answers  

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Technical equations

1 Answers   ME,

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Spacing of Transformers ratings are 10kva,15kva,25kva,63kva,110kva,150kva .........so on Q) Why transformer are not manufactured having ratings in between or other than these standard ratings ?

3 Answers  

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How the surge voltage can be arrested in electronic devices

1 Answers  

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if the synchronizing b/w generator and busbar not complete and we close the out going circuit breaker of generator then what happen ?

4 Answers  

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