Sir i completed diploma in electrical from govt. Polytechnic dhanbad (jharkhand) . In 2012 . Now i am working in sail iisco plant . Sir i want to get electrical supervisory certificate for applying in ongc . From where i get this certificate please guide me procedure step by step

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WHAT HAPPEN WHEN A DROP OF WATER MIXED UP WITH TRANSFORMER OIL ?

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what is differnce between grounding and earthing or both are same?

3 Answers  

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Write a note on Treatment for electric shock.

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diff. between tension mode & speed mode

0 Answers   BSL,

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why transformer has more efficiency compare to rotating machine?

3 Answers  

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Why insulation level follows this order? transformer < bus bar < circuit breaker & Isolator < transmission line.

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if we convert Ampers into kva,which one formula use by us,pls tell me?

10 Answers   ABB,

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explain the function of brush less dc motor?

0 Answers   Bhel,

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what is over frequency protection

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At site, we have 30Kw motor (3 phase, 400V,50Hz) and FLC 54A as per the nameplate. At the time of starting it draws 840A instead of 390A (7.2%). As per the data sheet also its 390A starting current. it thru a dol starter from the MCC. can anyone tell what is the problem in the motor

5 Answers   ME,

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can any one help me out by posting something related to rvnl interview for site engineer electrical.? what is the procedure? what kinda question they ask us? how long the interview goes? and any tips? and any thing you want to share?

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