Answer / guest

Cogging can be reduced by number of rotor slots prime to number of stator
slot and also by skewing the rotor slot

how u measure/calculate renge of capacitor,capacitor has no any rating tag.what is the theory of measure of capacitons.

0 Answers   Marriott,

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1)why the transformer rating in KVA insted of KW 2)why the secondary of ct is shorted and why the PT secondary is open

3 Answers  

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Explain about how is it working Earth fault'relay and wahts the resistance value of earth bed

0 Answers  

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1.why are not using acb 33kv ht side? is there any problem 2.what is difference between acb,vcb,sf6 breackers? 3.what is the function of invertor and convertor in ups?

0 Answers   L&T,

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why dc supply is given for excitation of ac alternator?how dc can produce flux?

5 Answers  

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what is die electric strnth of transformer ?

0 Answers  

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What is Grounding? any difference b\w earthing? if yes plz explan??

3 Answers   ABB,

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induction 3 phase motor terminal connection

0 Answers  

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what is voltage ?

7 Answers  

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what is the resultant phase shift in a 3 phase power system including neutral if on or more phases gets grounded or short circuited. kindly explain in detail for the reasons...

1 Answers   Enercon,

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During he starting up of the motor, the upstream's MCCB (350A) always trips due to the UVT relay activated. Can Star-delta starter use for a 20kW Motor (For a powder mixer machine) cause voltage-dip in the supply line voltage? If so, what are the recommended solution to eliminate/reduce the transient voltage dip in the line voltage?

4 Answers  

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we have two motors 1250kW,6.6kV to be coupled on the same shaft ,so please provide assistance for their synchronisation.

0 Answers  

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