What does negative slip of an induction motor signify?
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Answer Posted / trupti
slip=(Ns-N)/Ns
wh Ns - sync speed
N - actual speed of rotor.
generally whn IM is acting as motor,rotor speed is always
less than Ns,but if it is acting as gen(a prime mover moves
rotor),N bcms gr8er than Ns.
hence 4m formula we can c that s bcms -ve.
it implies rotor is running faster than stator field.
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