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Answer Posted / thavam
UPS uninterpreted power supply this out put automatic
voltage regulation.
inverter DC to AC converter for include UPS one of the
circuits
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why we use two slope(differential & restraining) in differential relay.but in busbar protection differential we are using only one slope?please explain
Can anybody post questions asked in Engineers India Limited Interview? Thanks in advance.
What is the power factor of an alternator at no load?
if in 3-phase system voltage=440V,frequency=60Hz, current=400A. then if it is single phase then current=? and if it is single phasing then current=?
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i installed 100kva ups. what KVA genset they should provid in input side? plz any update formula or ans with reason.
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sir pls send the je exam - 2008 and other model question papers..
I AM GOING TO ATTEND APTRANSCO ON 26TH OCT 08.PLEASE SEND ME ANY MATERIAL OR TYPE OF QUESTIONS OR EXP QUESTIONS.
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A commercial Building is designed with 14th floor levels with indoor substation of three phase transformer with rated capacity of 1000 Kva.The transformer delivered 65% of its rated capacity at 0.67 power factor lagging.Because of low power factor, the power customer was penalized and certain cost was charged accordingly based on every point percentage lower than 85%.This situation may repeatedly happen on the succeding energy bills of power customer.The power customer is desired to improve its historical power factor of 0.67 lagging and no further penalty be impose by the local power company on the next bill. Q: Identify the appropriate solution you want to offer to Client?.Justify SCIENTIFICALLY and MATHEMATICALLY the principles behind the solution.
Dear Mr B C pal...Can you plz. put some light on principle of operation of Z-Ct in conjunction to its use with 1Cx1000Sqmm HT Cables & Directional Ground Fault / Over Voltage Relays...Regd..Parag v K 9899115632
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what is the defination of Cable database? What are the points are considered while preparing cable database? Is there any sample available for cable database?
