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 |
Post New Answer View All Answers
I have 440v power coming to facility,( not being used ) can I buy large generator, (gas) to sell power back to electrical co.
why do we carry out winding resistance test?
features of hbc fuses
what are the standard IR values should be of R-E, Y-E, B-E, R-Y, Y-B, B-R of VCB in closed condition and in open condition for 500KVA & 1000KVA transformers. and what is the acceptable range when tested by 5000V megger.
In constant power region of 3-phase IM torque-speed characteristics, if frequency increases slip A does not alter B decreases C increases D none of above
How to protect sensitive loads such as Dosing pumps inside a factory from voltage surge/voltage fluctuation.
how can tell us the AC indoor or outdoor which Tr and formulls
Why choke coil is connected in series with starter in tubelight??why starter is connected in parallel to tubelight??
why we use circuit breakers for switching instead of normal switching device?
What is tranformer differtial?
why dc is used in control circuits for MV & LV switchgeras instead of ac
How to calculate total harmonic distortion level(THD) in VFD? and how can we reduce harmonics?
Is it advantages of having star-delta vfd than normal star vfd , if yes why?
what is the practical application of full adder circuit?
Which type of transformer is used for lighting loads?