what is cogging in motors?
Answer / 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 |
How to select AC3 duty contactor for DOL & Star-Delta starters
Why in ESP Positive earthed
What is the maximum load of 240mmsequre single core cable can carry?
Define relative stability.
How do we calculate tranmission line losses of a 132 KV tranmsission line. Please give some quick tips?
DC transmission
how i run d.c. moter with solar panel without use of battery?
How to calculate LT Network length in power distribution ? Service cable length considered or not?
can anyone show me how the 3 phase power is supplied to socket outlets?
what is the function of turbo in dg sets
An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The slip when motor stalls is A 1 B 0 C 13.33% D 10.33%
why substation ratings are multiple of 11 means 11\33 kv substation