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.

why the blede and jow of isoletor demage in substation?explan.

1 Answers  

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Is any generator is developed which is operated with out diesal or other expensive source?

0 Answers  

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how can we calculate the ampacity of the electrical wire/cable. and what are the factors must be considered. pls. elaborate.

0 Answers   Webel,

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what is the meaning and difference between ELECTRICAL DRAWOUT and MANUAL DRAWOUT?

3 Answers  

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what is the purpose of measuring % impedence?

1 Answers  

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What is the difference between AC and DC injection methods for rotor earth fault protection

0 Answers   Asian Alliance Insurance, NBVL,

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In an ammeter used for measurement of current, what is the meaning of the representation of range as '0-50-300'?

4 Answers  

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what is the function of step up transformer?

2 Answers   DEWA,

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What do you mean by cold shinkable cable joint.How it is done.

0 Answers  

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Could the power factor on electrical system can affect the registration of the kwhr meter or the CT/PT? 

0 Answers  

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hopkinson's test

5 Answers   Bhel, NTPC,

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can v rotate single phase induction motor in both the direction...?

1 Answers  

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