how the rotating magnetic fieldis produced in induction
machines???
give the correct explanation.is there any mathematical
expression for the same?
Answer / ahamad kutty
Talking about an induction motor when we supply a 3 phase
supply to the stator a magnetic flux is produced in the
stator winding which rotate at the speed of the incoming
supply frequency.Since there is a rotor with conductor bars
the rotating flux in the stator winding induce an emf in the
rotor conductor bars as per Faraday's law of induction and
this emf rotate at the same speed as that of stator.since
the rotor conductor bars are short circuited a current is
circulated in the rotor. Now as per Faraday's law of
interaction the current carrying conductor lying in a
magnetic field will experience a force and locked to the
stator moving flux and starts to rotate at the slip
frequency which is just enough to supply friction and other
no load losses of the motor.
Is This Answer Correct ? | 0 Yes | 0 No |
What happen if we give resistance to the armatuure of a dc motor?a
how to find value of resistance when 1 kw consumption for 10 minutes
If a rotary UPS is in line through grid power; What would be the impact on Power Factor if the load through rotary ups is 25% , 50% , 75% & 100%. Will the power factor reduce with less load?
Why indicate only 440V to 3-phase supply.
How many Zones can be in Conventional type fire alarm system & how can we detect the fire in Conv. type FAS?
the 230 value of voltage which is use in our home . is that value is rms, aerage or peack value of voltage?
WHAT IS BASICS TO SELECTION OF 11 kv Trasformer, send any calculation sheet for selection of transformer
Why Neutral Earthing pits and body earthing is interconnected
in CNC reference how to take? what kind of input give to the servo amplifier?
why phase always came one direction in 5pin socket(right hand or left hand) which direction and why..........?
what r Grid stations?what r there role.Explain in detail
difference between ac and dc generators