why we use mostly 3-phase but not 4-phase and 5-phase what is the difference between them

1 Answers  

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which type your UPS on line,off line give the reason?

2 Answers   Roto Power,

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what questions will be asked for 11/33KV licence interview APSEB hyderabad. Can any one share question and answers.

0 Answers  

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How will you calaculate the Ct ratio based on connected load 500KVA,and 11KV supply ?

3 Answers  

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Is it a better option to procure screw type air compressor rather than reciprocating air compressor?If so, what is the reason?How should we select an air compressor(100 CFM)? Please mention the important parameters of air compressor.

0 Answers  

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can we use only a isolator in the subtation..

1 Answers   ABB,

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How to select power cable for machine

4 Answers  

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why core is useful for a transformer ?and also in its operation ?

0 Answers  

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In ACS 1000 drive we are using 12 pulse converter,why don't use 3 pulse converter.

0 Answers  

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Formulae for calculating the transmission line losses for different voltage levels

0 Answers  

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Why star pointed terminal have no current? how?

3 Answers  

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Can anybody tell me what the breakdown voltage is for air and what it is for transformer oil please?

4 Answers   Pooja Cables,

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