The potential difference between a phase and neutral is 230v , but the potential difference between two phases is 400v. why?

4 Answers   HCL,

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Difference between UPS and Inverter?

7 Answers   HCL,

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why earth hole size is biggest in plug point?

13 Answers   RRB,

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What is the universal motor?

0 Answers  

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Whether amorphous core transformer is available in India?.If available then up to what rating of voltage and KVA?.

0 Answers   DAE, Tata Chemicals,

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How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).

0 Answers  

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how many types of ACB breakers, describe briefly..?

0 Answers  

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My system is 22kv/3.3kv transformer. client is asking to use NGR, but as we have dedicated Neutral Earthing systems which has a value less than 1 Ohm. So i want solid comparision. Why i should not use NGR as my system is already protected.Can any one help me to get out of this.how should i reply on basis of some great comparision and calculations. Please help

2 Answers   Ariel,

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What is the working of SCM CT or purpose in genrator ?

3 Answers   Bhel,

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To check the earth condition (In plug points); the voltage between earth and Neutral is in below 5 volts. Is it correct

6 Answers  

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explain the functions of main isolation switches

0 Answers   Zesa,

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practicalLY what is impedence ...?

2 Answers  

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