Why we use circular(Stepped) cross section in transformer core?

0 Answers  

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why the supply frequency in india is 50hz?

2 Answers  

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Do you know how to measure the earth resistance? if so explain it

42 Answers   ABB, BEL, BridgeStone, College School Exams Tests, Dalkia, Dalmia Group, DEC, Electrical, Genpact, HEC, IOCL, JLL, L&T, MSEB, Saraca, Sical, Telecommunications, University Exams,

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I am an electrical power engineer and arranged power system for a data center, I installed MCB, ELCB and erthing system TN-C-S. But some times several ELCBs Disconnect circuits at the same time! what may be the reason? (the ELCBs are 25A ,30mA)

9 Answers  

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how fluoresent lamp works??

2 Answers  

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how to select the surge suppresor for the 33 KV supply and what will be the rating, selection guide

1 Answers  

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if the load is 80 amp for main fuse and 100 amp for breaker so how can we calculate the cable size (cooper ) .

0 Answers   Bhel,

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sir please send me techinical questions for junior engineer posting in bangalore railway i am diploma holder

0 Answers   RRB,

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what is difference between ac voltage and ac current

3 Answers   TATA,

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What’s electric traction?

0 Answers  

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How to calculate PF capactors for a connected load?

2 Answers   FD, Power World,

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How to calculate the input cable rating for 10kva ups (3phase input and single phase output and also 3phase output, battery rating 65Ah)provide the formula also.thnx

0 Answers   Bhel,

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