what is the difference betn earthed and unearthed cables which is commanly used why?

2 Answers   Bhel, Power Grid,

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22kV HT incoming should be 3 phase or 4 phase? why is it not 4 phase?

1 Answers  

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The readings with a Multi meter are 15 Amps Phase Neutral 192,Phase Earth 194 and Neutral Earth 24 5 Amps Phase neutral 192, Phase Earth 153, neutral Earth 48

1 Answers  

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can a 50 Hz transformer work satisfactorily if placed under 60 Hz,what are the prices and losses that will arise

5 Answers  

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30 kva ups may kitne output voltage hote h

1 Answers   ME,

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What is the effect of solar radiation on the design of an Isolated Phase Busduct?

0 Answers   Exide, Punj Lloyd Ltd,

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How can we measure the residual voltage in dc machines?

0 Answers   GPREC,

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what are the values to be accepted on 3 core 185sq mm for 11000volts on insulation resistance between conductors and between conductors and earthed?

3 Answers  

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What are the advantages & disadvantages of a group electrive drive?

0 Answers  

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Please give me a solid reason there are 2 ELCB's If we take Phase from ELCB NO:1 an Netural from ELCB N:2 why ELCB is tripping when we connect the Load?please brief me with detail

3 Answers  

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What are the uses of MCB & ELCB ?

2 Answers  

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difference between temperature sensor and temperature switch

3 Answers   ABB,

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