Answer / dayal varma

universal motor will work in both ac and dc so in dc we
need a commutator

Answer / dileep mishra

universal motor work in both ac and dc so that commutator is
design for this motor. in dc motor commutator is use only
for direction.

Answer / gaurang

commutator is use to facilate the collection of current, so that we can use this electrical energy for our purpose. And commutator reversing the direction of current across one half of the pole and further reverses across another half of the pole so that we can get AC current or voltage.

we have one ups its neutral is not earthed.its one distribution MCB has a earth fault.but we can not put off any MCB.so how to find out that in which circuit is earthed without isolating the breaker.

3 Answers   CFCL,

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What is Engine?

6 Answers   HSL,

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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.

0 Answers  

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WHY THE TRANSFORMER VALUE MEASURES IN KVA INSTEAD OF KW.

4 Answers  

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What is the Diesel consumption between 82KVA DG Set and 180KVA DG Set for 1 hour.

1 Answers  

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what are frequency changers ? Tell me about commertially availble frequency changers ?

1 Answers   GE,

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Which circuit breaker arc quenching time is low AC or DC breaker?

1 Answers   Deltech,

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why the desirable efficiency for a motor is 60%, but in case of transformer, it is above 90%?

1 Answers  

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what is AH of battery

6 Answers   NSIC,

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How can we save electrical cost i.e switchgear, wiring, conduiting etc in a room?

1 Answers  

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If you don’t have coal, salt and copper, then how would you earth your connection temporarily at a camp site.?

1 Answers   Focus,

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How equivalent impedance is calculated in thevenin theorem?

0 Answers  

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