what is skin effect and why is it absent in DC systems

4 Answers  

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in a delta-star with neutral grounding on star side what will happen if one star limb  got opened at star point

1 Answers   NTPC,

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Please define ohm’s law for a.c (alternating current)?

0 Answers  

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Sir, I have applied for the of Jr.engineer(Electrical & Electronics) & ASST. LOCO PILOT at ALL RRB BOARDS. please send me all RRB Boards solved papers in the year of 2001 tO till date. i requested send me the papers to my id as soon as possible (jet_0991@yahoo.com). (This is very urgent) Thank You,

0 Answers  

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Classify driling machines.

0 Answers   Essar,

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Grounding. Dear all at one of my site we checked the amps at the earthing cable to the alternator it was found 125 to 130 A. at the neutal cable in same machine found 146A. in the same plant checked the earthing current on other alternator it was 52A, and neutral 116 A. we are facing problems with our controller and the card was damaged once. can that neutral/GND current be a reason? as there is common grounding for the Alternator,Brkr panel,Transformer?

2 Answers  

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how we can calcultae the short circuit level for bus bar

0 Answers   Jaiprakash, Panorama Apparels,

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what happen if drive input fail momentry at 48.5 HZ frequency?

0 Answers  

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what is transient enclosure vltage , very fast transients, very fast transient over voltages

0 Answers  

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how open delta PT works & what is its construction?

0 Answers  

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what is meant by IGBT how they differ from tyristor ?

0 Answers  

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if 12v battery get discharged for 2 months after if we put charge it will charge again?how much time it will take to charge?

0 Answers  

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