Answer / rakesh

The stator windings are connected in star because for the
same line voltage generated in an alternator or fed in case
of a motor the per phase voltage induced will only be
v/1.732 , hence the no. of turns required will be less and
hence the copper material required will also be less ,
besides te star connection also enables the provision of a
neutral which can aid in safe passage of fault currents .

why transformers are put with supply for 24 hours before giving supplying to a locality?

2 Answers  

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What is the de rating factor of cable? What is the importance of the de rating factor in cable select

0 Answers  

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What is the difference bet ween EDO Type & MDO type ACBs, and what is the advantage EDO Type over than MDO type ACBs.

2 Answers   Siemens,

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WHAT IS MODULATION AND NEED FOR MODULATION ?

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We have three 33kv substations. All of them energised by same source.When i am checking the phase sequence between one substation to other substation (like R Phase to R Phase) by multimeter i am getting some voltage.Near to LT panels UPS panels are there. Can u explain whether any possible to happen like that. In Phase SEquencemeter is showing correctly in both substations. How is it happen. Explain me.Explain me communication signal will produce Phase difference on this case.

3 Answers  

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what is the earthing condition between earth & neutral.

6 Answers   ABB,

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plz tell me about BACK emf and how it generates?

2 Answers  

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Will u plz give me simple diagram for tube light connection & also function of chock?

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Why generator field rheostat is set to maximum position and motor field rheostat is set to minimum?

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Parts of machine and their discription in details with suitable photo

0 Answers  

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In alternator generally we give DC voltage to field of alternator but field (excitor)produce Ac & converts into DC by rotating rectifier(RR ) then fed to rotor .my question is why we cannot give dc voltage directly to rotor instead of Excitor & RR ?

1 Answers  

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Pls any send the cable selection chart. at azeemk30@gmail.com

2 Answers  

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