a 3 phase slip ring induction motor is wound for 4 poles on stator and 6 poles

a 3 phase slip ring induction motor is wound for 4 poles on
stator and 6 poles on rotor; when 3 phase balanced voltage
source at 50 hz is applied to motor it will run at
a)1500rpm b)1000rpm c)750 rpm d)zero rpm

Question Posted / ankitshah

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a 3 phase slip ring induction motor is wound for 4 poles on stator and 6 poles on rotor; when 3 ph..

Answer / pramit dutta

i think the question is incomplete ,
we know n=(1-s)ns , so, ns=(120*50)/4=1500 rpm.
so we need to know the slip of motor then we find answer.

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a 3 phase slip ring induction motor is wound for 4 poles on stator and 6 poles on rotor; when 3 ph..

Answer / lolipop

Answer is d.) as it looks more nicer and more lengthy

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a 3 phase slip ring induction motor is wound for 4 poles on stator and 6 poles on rotor; when 3 ph..

Answer / netserab

first v 120f/p i.e. when 120 constant
f given ferquency
p is number of poles

then we have 4 poles on the sator and 6 poles on the
roter 120x50/3/2=1000

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3 No

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