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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my N-P 230 VAC at 3 wires but i haven't any voltages at phase to phase whither my supply is 3 phase, why i haven't received these line to line voltages ?

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what is the best electrical system i.e substation sytem of 11kv/.433kv for a township. if township have 300nos substation of 11kv. we have to go G.O.D.O. fuse unit or Compact Substation Unit. please reply Asap.

2 Answers  

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Hy the hydro power stations have high transmission and Distribution costs?

3 Answers  

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Why the wave trap is put in Y phse only in switchyard?why not in other phases?

1 Answers   IAG Automation, REL,

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what current is taken from a double wound 500kva transformer

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how balanced in star delta connection ?

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How to calculate the size of window A.C. for 200 Sq. ft room?

4 Answers   UltraTech, Voltas,

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what is the application of dynamic Breaking resistor in inverter ? & How it works ?

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why ground clearance of EHV line is more than HV line??

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IN A DY11 GROUP DISTRIBUTION TRANSFORMER WITH NEUTRAL EARTHED, WHAT WILL HAPPEN TO THE SYSTEM VOLTAGE & THE EQUIPMENTS IF EARTH GETS OPEN ON LOAD?

2 Answers  

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what is basic difference between the normal tube light choke and electionic choke ?

4 Answers   Amaron,

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