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
can you any one give exact mathematical relation between AC current and DC current?
Why we are use dol starter up to 10 hp
what id a dry type transformers and its function ?
I have 440v power coming to facility,( not being used ) can I buy large generator, (gas) to sell power back to electrical co.
what reactive how to maintain
Differentiate between digital phase converter and ordinary phase converter.
Suppose a 3 phase, 2 pole, 440V induction motor is driving a flywheel of 600mm diameter, 150kg mass. By using v-belt and pulley, the speed is increased to 4500 RPM. What will be the effect on motor current?
we use capister for power factor. when we use capaciter in dg circuit than defect dg. can we use capaciter bank for dg circuit
what is meant by residual over voltage & residual earth fault ?
what is mean by restructuring power system?
What is “pu” in electrical engineering?
Why does increasing the magnetic flux in the main field of a d.c motor cause the armature current to reduce??
Phase control and integral control are used for?
What is a feedback in control system?
what are the different sizes of U.G. cable & where these cabl;es are used according to voltage ..
