in case of three phase induction motor,when it is connected
to three phase supply,why the magnetic field is rotets
around the armeture?
- 5 Answers
- 7058 Views
- Hindalco, I also Faced
- E-Mail Answers
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
What are the material used for resistor?
When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<
what is effect of length of air gap on performance of dc motor and generator?
How much kv gas generator is needed to run 2 hp and 1 hp airconditioners, plus a refrigerator and 4 Tvs
what is acceptance test in electrical engineering.
Is there any guideline say about display of earthing value near to earth pit
which network topology offers the greatest level of tolerance?
Where is the best place to mount distribution panel in a house.
What are two contours of nichols chart?
how does a liquid starter reduce the starting currents?
what is the use of surge suppresser in 33 KV incoming panel. where it must be installed,inseries with incoming cable surge suppresser must be at incoming of the breaker are outgoing of the breaker
Can a generator runs after getting 1st stator earth fault.
what is the benefit of floating our DC source? if i have two floating DC source of which 1 has a ref voltage of -21VDC and the other of -18VDC. can it be connected in parallel to share a common ref voltage? if not, how do i make both sources to be of common ref voltage? tks
WHY DO VOLTAGE TRANSFORMERS FAIL DURING EARTH FAULT IN THE DELTA CONNECTED 6.6KV ELECTRICAL SYSTEM
How much voltage we need to apply in 33kv cable during hipot test of cable
