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Question 
What does negative slip of an induction motor signify?
 Question Submitted By :: Guest
I also faced this Question!!     Rank Answer Posted By  
 
  Re: What does negative slip of an induction motor signify?
Answer
# 1		 
It signifies that the motor is acting as a generator.
 
Is This Answer Correct ?    0 Yes 0 No
Tufail
 
  Re: What does negative slip of an induction motor signify?
Answer
# 2		 
If the rotor is running more with respect to stator or 
meachine synchronous speed called as negative slip.
                  OR
  The injected or developed frequency in rotor is greater 
than supply frequency.
significent:Induction motor acts as induction generetor.
 
Is This Answer Correct ?    0 Yes 0 No
Ankaraju
 
 
 
  Re: What does negative slip of an induction motor signify?
Answer
# 3		 
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.
 
Is This Answer Correct ?    0 Yes 0 No
Trupti
 
  Re: What does negative slip of an induction motor signify?
Answer
# 4		 
it indicates that the motor is generating
 
Is This Answer Correct ?    0 Yes 0 No
Niranajn
 

 
 
 
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