Answer Posted / suresh

voltage bw earth and nuetral is 100 to 200 milli volts if
it is perfect earthing

voltage b/w phase and earth is 230 volt for all phases


voltage b/w phase and neutral is varied from 220 to 230 v
it depends up on the phase balance conditions

difrent between vcb acb sf6 and mccb breakers

5536

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Purpose of providing neutral isolation panel for parallel operation of diesel generator

1831

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harmonics filter

2002

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some time we open engine breaker 8.0 MW load but plant not trip. and another time engine open 4.0 MW load engine trip why? individually engine breaker open & individually emergency stop why difference?

1818

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how to calculte capacitor range for single phase induction motors??pls tel

2170

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i want to know that how the height of Ct ,cvt ,LA calculated on the basis of creepage distance

2676

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send me all basic electrical question and answers

2967

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what is sevice settings for mccb?How can be it setted?

2070

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1.why should we connect the measuring instruments in l.v side in short circuit test of a transformer? 2.why the power factor is less in open circuit test of a transformer?

2119

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What should be the Sandwitch type Al. bus bar capacity for 2 M.W.Gen. set, having continuous full load current- 3463 Amps,ambient temp.- 50 Deg. C., Required temp. raise-20 deg.C., it will run 24 hrs, 365 days on full load, required highly reliable.

2737

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how to determine the inrush current of a transformer

2664

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how to calculate kvar in Akiva

1978

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Mention the methods for starting an induction motor?

1195

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I am going to appear for the RRB Chennai Section Engineer online exam. Please send me the question papers from 2001 to date to my mail id:upendrakrishna20@gmail.com,plz send me ,or send any other rrb papers plzzzzzzzzzzzzzzzzzz

2153

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ROC converges if pole and zero lies inside a) origin b) z=1 c) pole d) zero ? Explanation please? if ROC does not converges then?

2997

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