Answer / sunil

N-E=0volt
P-N=230Volt

Answer / sandhya

S it is crct ..as the earth potential should be zero always

Answer / dipesh

yes.it is good.but for sure check earthing resistance.it should be less then 0.5 ohm.

We have .ht motor which is 60Hz.we run on 50Hz.so that it's speed reduce but we had one prob.that motor winding temp increase up to 135 deg.we want reduce this temp.what to do?we arrange ext.cooling fan but not much effect.we want reduce this temp. Inhouse without affecting much.cost. also don't want reWINDING OF MOTOR?

3 Answers  

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xplain in detail d pr. of synchronous motors? why syn. generators r used for the production of electricity?

4 Answers  

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How to decide and select the different earthing wire size for the different types of earthing

0 Answers   Suzlon,

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why constant voltage transformer should be start without load? and if started then what will happen?

0 Answers  

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List out the different frequency domain specifications?

0 Answers  

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hi plz send me reliance placement papers..i.e electrical technical papers that have been asked in reliance test.

0 Answers  

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is it possible to run the any motor when winding grounded? how?

1 Answers  

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Why earthing transformer used in Distribution Sub-Station?

3 Answers  

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HOW WE CALCULATE CURRENT IF THERE ARE NOT PRESENT ANY AMMETER OR MULTIMMETER??????

0 Answers  

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why the oscillator doent need the ac voltage??how can it produce the ac voltage by applying the dc voltage only??

2 Answers  

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why the secondary winding of the transformer is not open circuited ?

5 Answers   Nepal Electricity Authority, Torrent Pharma,

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Is VVVFD reduced the starting current of an induction motor?

1 Answers  

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