why the NGR (neutral grounding resistor) always OFF during DG off?

0 Answers   Bhel,

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Explain why inductance of the iron cored coil changes with current?

2 Answers  

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what happens if commutator is removed in an dc machine?

3 Answers  

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in a induction motor if we put capacitor across it will the power factor of the motor will improve? if yes how

6 Answers   Reliance,

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how to calculate the transformer losses.

4 Answers   Cipla,

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how we control automatic generator i'e with to supply (main supply and local generator) when the main supply was break to supply the local supply automatically to begin supplying power.I now this control circuit is the combination of contactor time delay contactor switch and overload relay .but my question is how we combine those component thank you

0 Answers  

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what is SWA type of cable?????

4 Answers  

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how to calculate short circuit calculation of the transformer by usuing the percentage impedence? formula needed.

2 Answers   L&T,

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How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).

0 Answers  

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if we know Fault level say 25 KA , How to decide busbar size for Distribution network of 1000 Amp Breaker ? Sample Calculation or Farmula Available or not ?

4 Answers   TCS,

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What is PEC??Applications........

0 Answers   Emerson,

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WHAT IS START TO >5HP INDUCTION MOTER IN STAR DELTA METHOD?

2 Answers  

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