in case of three phase induction motor,when it is connected
to three phase supply,why the magnetic field is rotets
around the armeture?

Answer Posted / surya

in indction motor, motor windings alos plays a very
important role. these are also placed 120 degree apart. so
when you apply 3 phase supply, it forms a magnetic pole in
the stator. as the 3 phase supply is sinusoidal, the formed
magnetic pole starts rotation in one direction,that is the
synchronous speed of motor. as per farday's law of
electromagnetic induction, when a conductior cuts the
changing magnetic field and it's circuit is closed, an emf
is induced in it. so an emf causes curent to flow which
experiences force on conductor. rotor starts rotating.
for better understanding make a diagram of 3 phase
windings 120 degree physically apart. r-y-b and simulate
the 3 ph supply. hope this is informative.

Is This Answer Correct ?    3 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.

894


Can I use distributon class/transmission class Lightning arresots for protecting the building? If not why please explain?

1418


when elecromagnatic waves are propogated in a wave guide?

1478


What is the method to solve circuit using source transformation?

654


what is the difference between earthing and unearth

2366






A 1F capacitor is charged to 100V initially. A 1H inductor is connected accros the capacitor througha a switch. The current in the circiut when the switch is closed is____

1863


How to calculate earth wire load by formula

1960




1897


what purpose to use excaiter in DG.?

2213


What is the basic of DTH.

1861


What is domestic transformer? Draw the connection of domestic transformer.

1848


would the same effect be achieved by reversing the connection to one winding of the induction motor 3-phase?

1331


What will be the effect of circulating current in HT xlpe cable when both the armour ends are grounded. Will the termination fils after some time in case of 33 kv supply.

1621


what is cathodic protection and why it use in industries?

1747


Write a note on materials used as a fuse element.

1684