Interested to Buy Any Domain ? << Click Here >> for more details...
Is a induction motor rotate by back emf ? If not , then how it is rotate ?
- 1 Answers
- 4654 Views
- I also Faced
- E-Mail Answers
Answer Posted / chandru
Yes,back emf should be there to run it as an induction
motor.Normally what will happen is, when you give 3 phase
power to stator,rotating magnetic field(rmf) will be
created over it.Inturn,this rmf will induce an emf in rotor
side.According to lenz law,obviously this induced emf will
oppose the cause that produces it.Here, the cause is
relative motion between stator's rotating mag field and
rotor speed.Normally,we will call it as slip.So, it will
try to make that relative motion to zero.Due to this
operation, induction motor will rotate.If suppose,rotor
speed catches the stator's rmf,induction motor will
stop.Finally, the main thing to note here is that, it wont
run without slip.
| Is This Answer Correct ? | 3 Yes | 1 No |
Post New Answer View All Answers
what r PID controllers?why they r used?what is there purpose?plz Explain in detail
Explain what is electric traction?
working of diesel generator ?
Explain the iniluencc of short circuit ratio on the pert'orniancc of synchronous machine.
I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?
how to apply b license to c license in tneb
why we not used 11kva as a direct our electrnics component.
why we use four type of phase angle difference between pimary & secondry winding of a transformer & where we use them?
Bimetal strip used in overload relay what is that,which types of material used for that & percentage.
If a shunt Dynamo has induced emf 100V and 0.4 ohm resistance and battery of accumulator of open circuit emf 110V and 0.5 Ohm resistance are in parallel what is common terminal potential difference?
If a 3 phase induction motor is in off condition in the conveyor and rotor of the motor keeps moving with the conveyor than the resistance of windings of motor varies. why is it so ??
what is the difference between transformer,converter and transducer
how to calculate transformer turn primary & secondary side 11kv to 420v
How to detect voltage vector shifting in interconnection protection.
how do u gauge the size of the cable ?for eg. consider a 300 sqmm L.T Cable.How do u determine the size of the cable seeing it pratically?
