Is a induction motor rotate by back emf ? If not , then how it is rotate ?
Answer / 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 |
How do we calculate tranmission line losses of a 132 KV tranmsission line. Please give some quick tips?
Which has more losses, AC or DC??
How can you justify a fully carged battery by physical checkup ?
12 Answers Indian Military Services,
hi Is there any possibilities to find out the rotation of a shaft or something else by using electromagnectic waves or by IR rays.If s then can v change the dir., of rotation of the same by remotely?& how? plz dn't any1 say "NO r CAN'T"
total numbers of earthing of a transformer
what is the fuction of electrical transducer in control pannel?
Can I use 1 phase power supply to run 3 phase motor? If yes, how?
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating
dc supply given to dc generator winding.how is possible? my knowledge is saying the winding will burn. please reply.
How many types of lightings are there
What is a doble test
1 Answers KPSC Karnataka Public Service Corporation,
how to find out speed of single phase motor