why we are caling 440 volt 3 phase supply instead of 660 volt 3 phase supply? because each phase as a voltage of 220 volt. if anybody know the answer for my question please send it to my mail id. thank you.

3 Answers   College School Exams Tests, Jindal Steel and Power, JIOL, NEC,

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When capacitor bank connect on line. It's draw some current but it's current not increase of main line ammeter. Why?

1 Answers   MCL, Star Wire,

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Why (In India) we preferably go for +-30 deg connection of transformer? what are the advantages in this connection?

2 Answers  

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avr is an automayic voltage regulator ... it regulates voltage before it synchronise with grid after synchronisation it regulates power factor why....

7 Answers  

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What is the purpose of SOTF being used inspite of distance Protection given?

7 Answers   Alstom,

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A motor running with lenze frequiency inverter stops if I REDUCE SPEED with 25% load.If I run it in High speed and medium speed running smoothly with full load.please help me to solve it.

0 Answers  

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how to identify the direction flow of electrons in a conductor? if i want to check the sequence in kv lines, is any device is available?

3 Answers  

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In TNC switch, is there any 1NO+1NC block ? and if we move over closing position, is ther any affect on trip position or vice versa?

0 Answers  

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why fuse amperes rating are specified ratings like 32amp & 64 amps?

2 Answers  

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What is a transductor ?

2 Answers  

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what is meant by transformer?

11 Answers  

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why transformer donot allow the dc?

17 Answers   ONGC,

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