Answer / hardik

motors basically run becoz of interaction bet'n two flux set
in to stater and rotor. when we give to suppy to fild wdg it
will energies and flux will be proudes and becoz of mutual
induction c/n will produce in rotor wdg and becoz of c/n
flux produce and interact each other and torque will devlop
and motor run as particular direction so its necessary to
produce flux.and flux is devlop by close loop and this type
of connect like star and delta it help to give close loop.

Answer / mohamad

star or delta connection r used
to get the close loop in the 3ph
ckt. Otherwise it became open
ckt.

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