Why neutral has to switch on-off with phase in TN IT TT systems i.e neutral should be taken as fourth pole

1 Answers  

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Is reverse power relay of generator operate due to voltage variation problem? please clearify.

1 Answers   Birla,

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what is the formula for calculating motor rating? Example: If we want to rotate a 1000 kg waight disc up to 100 RPM, which size motor will require?

1 Answers  

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What is meant by celling voltage & current in excitor ?

0 Answers  

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How to select the rating of a CT used for REF protection. The rating can be of equal rating of Phase current or neutral current rating

2 Answers   UltraTech,

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How to synchoronize the generator (with gcb,GT) to grid????? ????? from Grid iam getting power (rated 400kv/20kv) through GT and its goes to UAT.,,ST.,, now my generator(rated 20kv ) ready.,, now iam closing my GCB.,, in GT iam suddenly giving 20kv on that Gt.,, what will happend

0 Answers  

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100V supply is appllied between 500K Resistance bulb. for 1 kwh energy, how long time the bulb will glow? explain the calculating method.

3 Answers   Bhel,

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How can we get electric power from lighting ?

3 Answers   TATA,

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why we r used APFC Panel in industrial area.when P.F. low then wat will be the effect in our system?

10 Answers   ABB, Georgio Rocks, Piramal Healthcare, Zenith Engineering Corporation,

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What is the generating voltage of a power station consided generally?

20 Answers   L&T,

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What is a Single Phase and Three phase Power? How it will be converted or transformed into another form?

3 Answers  

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what is earthed and inearthed cable or system?

1 Answers   CCCL, L&T,

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