Answer / bosky babu

In 3 Phase transformer,If the core is in circular shape, a rotating magnetic field will builds up and it will tends to rotate the secondary winding, (same as in the induction motor)

So the core is in the shape of square or in rectangle.

Answer / himansu

if circular core is used then more lamination is needed...thus
cost factor is obtained....

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ITI r/tv trade APPLY (J.T.O VACANCEY) ALSO INCLUD AITT ELECTRONIC,WRITEEN XAM DONE 23.03.10 BUT NO RESPONCE WHY ANATHER ID gopal_gh007@rediffmail.com

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