why dc exicitaion used in ac motor....?

2 Answers  

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Why the Transformer connection is changing in different transformer?(Like Star & Delta,Delta & Delta,Star & Star,Delta Star) From that connection where it is used?

2 Answers  

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how can we measure 220kv or more than these voltages ...?and also how can we conform whether we r getting 220kv from generating stations throuth the h v transmission lines?

1 Answers  

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What are the causes of eddy current losses?

1 Answers   Schneider,

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why magnet has north and south poles only why not east and west and why we are considering as north and south poles? why cant we consider as east and west?

0 Answers  

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what is the purpose for open delta connection in potential transformer

2 Answers  

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what is the difference between the voltage of 5 volts capacitor and and 5volts battery?

0 Answers  

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what kind of motor is used for lifting applications

5 Answers  

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what is phase to phase fault? what is line to line fault?

2 Answers   Phoenix Technologies,

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why is a earth pit 10 ft usually? And, what should be the distance betweeen two earth pit?

4 Answers  

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What are the difference between these terms ? e.m.f, voltage, potential, potential difference, current etc? what are the difference between these terms ? (electromotive force) e.m.f, voltage, potential, potential difference, reference potential, reference potential difference, current. How can i explain and describe these all terms in single line each and little more explaination too thanks

2 Answers   Siemens,

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what purose of the double circuit transmission line phase of the line phase changed for circuit-1 for Circuit-2 R-Y-B B-Y-R

0 Answers   NCC,

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