Answer Posted / pati

Ionic traces can effect the Tan delta of insulating oil
like transformer oil.The amount of charge particle directly
proportional to the electrical properties, hence tan-delta
test essencial for Transformer oil.

What do you understand by external characteristics of a d.c. Generator?

1106

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in my industry we are using 3 step up transformers for induction heaters..i.e 415/580v and other are 11/440v.in power consumption does a step trnsformer makes any difference compared to step up?? plz explain

1857

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If we have to feed a housing complex having load 8MVA, than what would be the better option, either we first step down 33kv supply into 11kv & than 430v or we proposed no of 33/.44 kv transformer, also which option is economical?

2228

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how can calculate resistance box for 15 kw, 6 pole, RV-230, RA-42 motor

3336

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How to run a three phase motor into single phase........

2002

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what is the function of statics switch in ups and tell me parts

2040

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i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value

1949

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what are the possible reaons & remedies if resistance of NGR getting heat up

1858

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State the types of distortions in amplifier?

1208

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I use 20 nos led tube 4feet, in pathway 100mtr approximate, so what size cable i use for lighting

1477

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how to convert lv line to hv line and viseversa, any losses will occur during this process

2070

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what are the types of electromagnetic forces developed in practical transformer?

2632

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PLS MENTION QUESTIONS ASKED IN IOCL INTERVIEW FOR ELECTRICAL EGG??

2424

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Cb closed condition if there is a tcs fail whether cb will trip or not

1834

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how can you calculate fault level ?

2396

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