Answer Posted / ram lal

power factor is not mention so how can calculate ...........

WHY EARTHING NOT NEEDED IN BATTERY IN SUBSTATION

1911

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temp of cast resin 1500kva tx formerwent up to 138.c but came down very fast to about 100.c within 20 mins when load was reduced from 70% to 60%

1868

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2- What are the percentages between excitation currents in phase (R, S and T) in ∆ and Ỵ connections in excitation Current test in transformers?

1961

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What is the capacity of the Fastners 12mm?

2358

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in battery charging room we find two fuses (one in positive other in negative cables ).why it is so?one fuse is ore than sufficient?

2200

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What do you mean by ratio correction factor of instrument transformer?

1123

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Can you please explain creepage distance in detail, for a 6.6kV cable head what must the distance be and how do you determine it?

2813

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I have 2500KVA transformer delta/star,13.8KV/380V provided with LV 4000A breaker. Already I have 2300KW motor feeder with a full load 90%. Is it possible to connect another 1600A from that breaker? If so how the calculation is done?

3761

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Where can I get CPWD electrical specifications & Shedule of rates? Please help me

2190

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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,

1778

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what does a k rating in a transformer means?

2456

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plz tel me syllabus and exam date 4 jr executive engg (electrical)

1925

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what is zinc diffusion?

2017

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i have a 1500kVA transformer what is the kWH meter i need to use?

1711

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WHY MOSTLY Rph IS USED FOR CONTROL CIRCUITS AUX. SUPPLY ?

2451

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