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Answer Posted / iamdon
Cogging phenomenon is seen in the case of 3 phase Induction
Motor(SCIM-Squirrel Cage Induction Motor).
When number of stator and rotor slots are exactly equal and
polarity of conductors facing each other in slots is
opposite,In such cases, there is a magnetic locking between
facing conductors housed in stator and rotor slots.Since
the rotor inertia is large so motor does not start at
all.This is called Cogging.
This is avioded by skewing the rotor conductor slots over
the surface by angle in the range of 5 degree.
Author:arbelectbit@yahoo.com
| Is This Answer Correct ? | 33 Yes | 1 No |
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