Why we use three phase world wide why not four phase or five phase being used?

8 Answers  

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Relation between pyramids and electrical technology?

1 Answers  

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How Many Safety of Transformer

2 Answers  

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which surface is suitable for NEUTRAL GROUNDING ?

1 Answers   NTPC,

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what is mean by power factor

9 Answers  

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why most of the modern day type electrical appliance have 2 pins rather than 3 pins?

4 Answers  

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list of tests to be carried out at manufacturers end while purchasing a step up transformer of 11kv to 66kv ,2MVa Capacity.

0 Answers  

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what is static frequency converter?what is the function...of sfc...?

0 Answers   L&T,

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please write motor, transformer, Generator setting, fault level calculation of Tr.etc

0 Answers  

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What is the test block protection relay if any body know plz explained

0 Answers  

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what is the different bitween ETP & WTP

1 Answers   Square Pharma,

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If any HVDC line is going with positive & negative(the negative usually have return path of current with earthing electrode). Now the question is if this HVDC earthed electrode which is using as return path and earthed any nearby 400kv or 220kv AC substation equipments. which will be the impact of this on AC substation & its equipment, how severe may be this and what should be the minimum distance require between HVDC earthed electrode and AC substation equipments? It's really an high engineering level question...Dare to answer and increase your knowledge.

0 Answers   MEIL,

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