if dc excitation is used to produce manetic flux in rotating machines then ehy it is not used in transformers.

4 Answers  

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what is the differnce b/w voltage and current

8 Answers   Steel Plant,

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WHAT IS THE DIFFERENCE B/W BUSHINGS AND INSULATORS? WHAT IS THE CREEPAGE DISTANCE ?

3 Answers   TCS,

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which types of relay used in acb and vcb?

0 Answers   IBM,

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how can we change the polarity of Alternating current rapidly? how frequency of ac can be controlled and changed easily?

0 Answers  

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why dc did not flows to earth?

2 Answers  

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what is the different between earth leakage relay and earth fault relay?

5 Answers   ME,

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What is Plank's Law?

0 Answers   Godrej,

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What technology is used in latest generators?

0 Answers   IBC,

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I have 11KV/415V power distribution transformer. I have found unbalance current in LT (415V) side. Also observed that unbalance voltage (3V) at LV side due to HV side unbalance voltage. What should I check for this? Also, the same LV side load can run in balance on captive power.

1 Answers  

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How Humming noise generated in starter motor which was used the start the engine in a vehicle/car/Truck?.Moreover Starter motor was operated in DC power supply. Can you guys clarify ?

2 Answers  

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what is an unbalance in acircuit? in a three phase 3wire circuit how an unbalance will come? in a three phase four wire system how an un balance is coming?

0 Answers  

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