what happen if i change the polarity of ac when it is
connected with motor

Answer Posted / sameh el-azab

-if the motor is single phase nothing happens because the ac wave inversed automatically
- if the motor is three phase there will be two case:-
1- if u change two line the motor direction is inversed
2- if you change the three line nothing happens

Is This Answer Correct ?    15 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is the reactance,capacitance & impedence electrical armoured & unarmored Cables.

1629


how to identify conection leads of an unknown electric motor

1557


Anyone who can recommend an equivalent to Envirotemp FR3 of Cooper?

1508


what is meaning of 230volts ac 50hzs ac supply is it rms or maximum to getting ac 230v what amount of max voltage they will send

1550


What are all present producing cost of Per KWH of various Fuel?

2121






what is upper impedance and lower impedance of a distance relay

1595


Why colled 440V to 3-phase supply.

1683


armature is that part in which current is induced since in dc motor we supply current to the conductor so why we call it armature?

1423


How do you compute voltage drop and cable size over distance?

1759


can you any one give exact mathematical relation between AC current and DC current?

1399


In what cases (circumstances)we should apply P controller, PD controller, PI controller & PID controller ?

1704


IN dc capacitive reactance is??

931


Is there any problem about which the drive (inverter) doesn't show/display the alarm and/or fault but instead of this , it doesn't work ? I want to know that could there be any kind of problem in the drive when the drive doesn't display the alarm and/or fault ?

1514


what is the importance of earthing system on the generators big capacity and small?

1314


internally connection of photvoltic module

1456