Answer / paneerselvam

adv:losses will be low
dis adv: we can not make pole

N=120F/P
WE CAN GET P=0.36 that's why we can not make.

Answer / k.prakashchandra

Synchronous speed= 120xf/p .p=120f/n Number poles will
be0.36 for 1000rpm and 3 hz

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