Why is the frequency not changed during transformation of electrical energy in a transformer?

0 Answers  

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what is the ATS .And how it works.

0 Answers  

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What is the relation between the Peripheral speed(N) , no.of poles(P) and diameter(D) of a cylindrical rotor alternator ?

5 Answers   NTPC,

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pls someone send me sample question papers along with the key.thanks in advance

0 Answers   HPCL,

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state application of relay in transmission line?

4 Answers  

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i want to ask that as everybody knows that in star connection on star point is called neutral. my question is that why on that poin called neutral. what is the reason behind it. what is the logic behind it. i heared somewhere that on this point all phases current become zero thats why. if this answer is right then prove why on that point is current become zero. if this answer is not right then tell me the right answer. post ur answer here or on my mail address. m.ikram786@yahoo.com m.ikram555@gmail.com. thanks.

1 Answers  

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How to calculate loses in transformer of 160 KVA ?

0 Answers   IDV,

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why dc motor runs slowly when dc supply is given?

2 Answers   L&T,

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wich type of cable is selected for wiring of 20hp motor?

5 Answers   Alchemist,

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why battery room in substation is black coloured?

4 Answers  

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What is the restart inhabit setting in ABB spam150c relay (Motor protection relay)

0 Answers  

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Work done in a free expansion process is

0 Answers   Caterpillar,

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