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 transformer are rated in KVA not in watt?

7 Answers   DMRC, L&T, TCS,

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what work will do diffrential realay DG set

0 Answers   IG Petrochemicals Ltd,

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A charge of 240 C is transferred in 2 minutes. The current flowing is:(a) 480A(b) 120A(c) 2A(d) 8A

2 Answers  

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how to find the starting current of the motor?

1 Answers   BOC,

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why dc series moter is not started at no load?

5 Answers   IOCL,

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Which neutral is use when DG(3 Phase)is running?

3 Answers  

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What is the difference between bundled conductors and double circuit?

1 Answers   Power Grid,

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What is the difference between ELCB and RCCB. Please define the working of both.

6 Answers  

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why voltage will come different in phase?

3 Answers   HP, Vissa,

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how to calculate the megger values for motors and cables?

2 Answers   Adhunik,

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why DOL starter is use in induction motor as it is not reduce the starting torque

2 Answers   Maruti Suzuki,

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how to select energy meter? have any calculation?

0 Answers  

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