Answer / vikas

This is neutral earthing concept. Normally for the generators of higher ratings we connect neutral to ground through a coil (peter son coil) to reduce the heavy fault current if fault occurred in the generators (Ph-Ph to fault Ph-body fault etc). Same concept for the transformer also but resistance grounding is sufficient for the 33/11kv transformer.

what will happen if dc machine are supplied by ac source??

2 Answers  

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Tell me harmfull effects of over voltage,under voltage,spike,surge,transient & noise.

1 Answers  

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please explain power factor in simple words.....

3 Answers  

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A cotter joint is generally used to transmit

0 Answers   Caterpillar,

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How Many Safety of Transformer

2 Answers  

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operation principle of a generator? Gss, Diesel and HFO which is better and why?

1 Answers  

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sent to a site and asked to explain how you would like a twenty seven flour building should be supplied with lighting and sockets plus a water boiler.

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what is the necessary of using inductance property in transmission lines even through resistance is used to opposes the high current flows in that?????

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How much Fault current can be contributed by a motor?

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A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Calculate rotor frequency. A 50 Hz B 0 Hz C 4 Hz D 6 Hz

3 Answers  

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What is the reason for low voltage in houses?

19 Answers   Maytas,

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We say that if voltage in a power system is increased,for a constant power the current will decrease (by P=VI). isn't this in disagreement with the ohms law(I propotional V;resistant const.).Since the resistance of transmission lines remains constant,shouldn't inc in voltage cause inc in current across the transmission line? I have read many articles across the net but still couldn't this figure this out. :( Guyz plz assist me with dis..:)..

4 Answers  

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