why we changed the polarity of DC generator ?

1 Answers   DMRC, Microsoft,

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How to select the rating of the Transformer?

2 Answers  

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I have 3 1000 kva single phase transformers and I wish to replace them with one three phase transformer. What is he kva rating of the new three phase, is it 1000 kva also or 3000 kva.

5 Answers   Central Moloney,

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in which direction real power and reactive power flow and why???????

3 Answers  

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What happens to the terminal voltage of an alternator connected to a bus bar when it is suddenly disconnected from the bus bar??

2 Answers  

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can we use IGBT as a AC-DC converting device in the applications?

2 Answers  

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two parallel conductors are carrying the current in the same direction.which of the following statements is true? (a)there is arepelling force between the conductors (b)the force increases when the distance between the conductors is increased (c)there is an attaracting force between the conductors (d)the force increases when the distance between the conductors is decreased

1 Answers  

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can someone explain that how the speed of the protection system affects the fault level calculation?

0 Answers  

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can any one help me out by posting something related to rvnl interview for site engineer electrical.? what is the procedure? what kinda question they ask us? how long the interview goes? and any tips? and any thing you want to share?

0 Answers  

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if the power factor is .88 i want to increase the power factor to .99 what number of capacitor is to add?

3 Answers   Amway,

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the resstance of a thermistor is 5000 ohm at 25degreeC and coefficient is .04/degCel. A measurement with lead resitance of 10 ohm will cause an error of

1 Answers   GATE,

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How the neutral earthing is connected in DG alternator

6 Answers  

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